zero

A history of Zero

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One of the commonest questions which the readers of this archive ask is: Who discovered zero? Why then have we not written an article on zero as one of the first in the archive? The reason is basically because of the difficulty of answering the question in a satisfactory form. If someone had come up with the concept of zero which everyone then saw as a brilliant innovation to enter mathematics from that time on, the question would have a satisfactory answer even if we did not know which genius invented it. The historical record, however, shows quite a different path towards the concept. Zero makes shadowy appearances only to vanish again almost as if mathematicians were searching for it yet did not recognise its fundamental significance even when they saw it.

The first thing to say about zero is that there are two uses of zero which are both extremely important but are somewhat different. One use is as an empty place indicator in our place-value number system. Hence in a number like 2106 the zero is used so that the positions of the 2 and 1 are correct. Clearly 216 means something quite different. The second use of zero is as a number itself in the form we use it as 0. There are also different aspects of zero within these two uses, namely the concept, the notation, and the name. (Our name "zero" derives ultimately from the Arabic sifr which also gives us the word "cipher".)

Neither of the above uses has an easily described history. It just did not happen that someone invented the ideas, and then everyone started to use them. Also it is fair to say that the number zero is far from an intuitive concept. Mathematical problems started as 'real' problems rather than abstract problems. Numbers in early historical times were thought of much more concretely than the abstract concepts which are our numbers today. There are giant mental leaps from 5 horses to 5 "things" and then to the abstract idea of "five". If ancient peoples solved a problem about how many horses a farmer needed then the problem was not going to have 0 or -23 as an answer.

One might think that once a place-value number system came into existence then the 0 as an empty place indicator is a necessary idea, yet the Babylonians had a place-value number system without this feature for over 1000 years. Moreover there is absolutely no evidence that the Babylonians felt that there was any problem with the ambiguity which existed. Remarkably, original texts survive from the era of Babylonian mathematics. The Babylonians wrote on tablets of unbaked clay, using cuneiform writing. The symbols were pressed into soft clay tablets with the slanted edge of a stylus and so had a wedge-shaped appearance (and hence the name cuneiform). Many tablets from around 1700 BC survive and we can read the original texts. Of course their notation for numbers was quite different from ours (and not based on 10 but on 60) but to translate into our notation they would not distinguish between 2106 and 216 (the context would have to show which was intended). It was not until around 400 BC that the Babylonians put two wedge symbols into the place where we would put zero to indicate which was meant, 216 or 21 '' 6.

The two wedges were not the only notation used, however, and on a tablet found at Kish, an ancient Mesopotamian city located east of Babylon in what is today south-central Iraq, a different notation is used. This tablet, thought to date from around 700 BC, uses three hooks to denote an empty place in the positional notation. Other tablets dated from around the same time use a single hook for an empty place. There is one common feature to this use of different marks to denote an empty position. This is the fact that it never occured at the end of the digits but always between two digits. So although we find 21 '' 6 we never find 216 ''. One has to assume that the older feeling that the context was sufficient to indicate which was intended still applied in these cases.

If this reference to context appears silly then it is worth noting that we still use context to interpret numbers today. If I take a bus to a nearby town and ask what the fare is then I know that the answer "It's three fifty" means three pounds fifty pence. Yet if the same answer is given to the question about the cost of a flight from Edinburgh to New York then I know that three hundred and fifty pounds is what is intended.

We can see from this that the early use of zero to denote an empty place is not really the use of zero as a number at all, merely the use of some type of punctuation mark so that the numbers had the correct interpretation.

Now the ancient Greeks began their contributions to mathematics around the time that zero as an empty place indicator was coming into use in Babylonian mathematics. The Greeks however did not adopt a positional number system. It is worth thinking just how significant this fact is. How could the brilliant mathematical advances of the Greeks not see them adopt a number system with all the advantages that the Babylonian place-value system possessed? The real answer to this question is more subtle than the simple answer that we are about to give, but basically the Greek mathematical achievements were based on geometry. Although Euclid's Elements contains a book on number theory, it is based on geometry. In other words Greek mathematicians did not need to name their numbers since they worked with numbers as lengths of lines. Numbers which required to be named for records were used by merchants, not mathematicians, and hence no clever notation was needed.

Now there were exceptions to what we have just stated. The exceptions were the mathematicians who were involved in recording astronomical data. Here we find the first use of the symbol which we recognise today as the notation for zero, for Greek astronomers began to use the symbol O. There are many theories why this particular notation was used. Some historians favour the explanation that it is omicron, the first letter of the Greek word for nothing namely "ouden". Neugebauer, however, dismisses this explanation since the Greeks already used omicron as a number - it represented 70 (the Greek number system was based on their alphabet). Other explanations offered include the fact that it stands for "obol", a coin of almost no value, and that it arises when counters were used for counting on a sand board. The suggestion here is that when a counter was removed to leave an empty column it left a depression in the sand which looked like O.

Ptolemy in the Almagest written around 130 AD uses the Babylonian sexagesimal system together with the empty place holder O. By this time Ptolemy is using the symbol both between digits and at the end of a number and one might be tempted to believe that at least zero as an empty place holder had firmly arrived. This, however, is far from what happened. Only a few exceptional astronomers used the notation and it would fall out of use several more times before finally establishing itself. The idea of the zero place (certainly not thought of as a number by Ptolemy who still considered it as a sort of punctuation mark) makes its next appearance in Indian mathematics.

The scene now moves to India where it is fair to say the numerals and number system was born which have evolved into the highly sophisticated ones we use today. Of course that is not to say that the Indian system did not owe something to earlier systems and many historians of mathematics believe that the Indian use of zero evolved from its use by Greek astronomers. As well as some historians who seem to want to play down the contribution of the Indians in a most unreasonable way, there are also those who make claims about the Indian invention of zero which seem to go far too far. For example Mukherjee in [6] claims:-

... the mathematical conception of zero ... was also present in the spiritual form from 17 000 years back in India.

What is certain is that by around 650AD the use of zero as a number came into Indian mathematics. The Indians also used a place-value system and zero was used to denote an empty place. In fact there is evidence of an empty place holder in positional numbers from as early as 200AD in India but some historians dismiss these as later forgeries. Let us examine this latter use first since it continues the development described above.

In around 500AD Aryabhata devised a number system which has no zero yet was a positional system. He used the word "kha" for position and it would be used later as the name for zero. There is evidence that a dot had been used in earlier Indian manuscripts to denote an empty place in positional notation. It is interesting that the same documents sometimes also used a dot to denote an unknown where we might use x. Later Indian mathematicians had names for zero in positional numbers yet had no symbol for it. The first record of the Indian use of zero which is dated and agreed by all to be genuine was written in 876.

We have an inscription on a stone tablet which contains a date which translates to 876. The inscription concerns the town of Gwalior, 400 km south of Delhi, where they planted a garden 187 by 270 hastas which would produce enough flowers to allow 50 garlands per day to be given to the local temple. Both of the numbers 270 and 50 are denoted almost as they appear today although the 0 is smaller and slightly raised.

We now come to considering the first appearance of zero as a number. Let us first note that it is not in any sense a natural candidate for a number. From early times numbers are words which refer to collections of objects. Certainly the idea of number became more and more abstract and this abstraction then makes possible the consideration of zero and negative numbers which do not arise as properties of collections of objects. Of course the problem which arises when one tries to consider zero and negatives as numbers is how they interact in regard to the operations of arithmetic, addition, subtraction, multiplication and division. In three important books the Indian mathematicians Brahmagupta, Mahavira and Bhaskara tried to answer these questions.

Brahmagupta attempted to give the rules for arithmetic involving zero and negative numbers in the seventh century. He explained that given a number then if you subtract it from itself you obtain zero. He gave the following rules for addition which involve zero:-

The sum of zero and a negative number is negative, the sum of a positive number and zero is positive, the sum of zero and zero is zero.

Subtraction is a little harder:-

A negative number subtracted from zero is positive, a positive number subtracted from zero is negative, zero subtracted from a negative number is negative, zero subtracted from a positive number is positive, zero subtracted from zero is zero.

Brahmagupta then says that any number when multiplied by zero is zero but struggles when it comes to division:-

A positive or negative number when divided by zero is a fraction with the zero as denominator. Zero divided by a negative or positive number is either zero or is expressed as a fraction with zero as numerator and the finite quantity as denominator. Zero divided by zero is zero.

Really Brahmagupta is saying very little when he suggests that n divided by zero is n/0. Clearly he is struggling here. He is certainly wrong when he then claims that zero divided by zero is zero. However it is a brilliant attempt from the first person that we know who tried to extend arithmetic to negative numbers and zero.

In 830, around 200 years after Brahmagupta wrote his masterpiece, Mahavira wrote Ganita Sara Samgraha which was designed as an updating of Brahmagupta's book. He correctly states that:-

... a number multiplied by zero is zero, and a number remains the same when zero is subtracted from it.

However his attempts to improve on Brahmagupta's statements on dividing by zero seem to lead him into error. He writes:-

A number remains unchanged when divided by zero.

Since this is clearly incorrect my use of the words "seem to lead him into error" might be seen as confusing. The reason for this phrase is that some commentators on Mahavira have tried to find excuses for his incorrect statement.

Bhaskara wrote over 500 years after Brahmagupta. Despite the passage of time he is still struggling to explain division by zero. He writes:-

A quantity divided by zero becomes a fraction the denominator of which is zero. This fraction is termed an infinite quantity. In this quantity consisting of that which has zero for its divisor, there is no alteration, though many may be inserted or extracted; as no change takes place in the infinite and immutable God when worlds are created or destroyed, though numerous orders of beings are absorbed or put forth.

So Bhaskara tried to solve the problem by writing n/0 = ∞. At first sight we might be tempted to believe that Bhaskara has it correct, but of course he does not. If this were true then 0 times ∞ must be equal to every number n, so all numbers are equal. The Indian mathematicians could not bring themselves to the point of admitting that one could not divide by zero. Bhaskara did correctly state other properties of zero, however, such as 02 = 0, and √0 = 0.

Perhaps we should note at this point that there was another civilisation which developed a place-value number system with a zero. This was the Maya people who lived in central America, occupying the area which today is southern Mexico, Guatemala, and northern Belize. This was an old civilisation but flourished particularly between 250 and 900. We know that by 665 they used a place-value number system to base 20 with a symbol for zero. However their use of zero goes back further than this and was in use before they introduced the place-valued number system. This is a remarkable achievement but sadly did not influence other peoples.

You can see a separate article about Mayan mathematics.

The brilliant work of the Indian mathematicians was transmitted to the Islamic and Arabic mathematicians further west. It came at an early stage for al-Khwarizmi wrote Al'Khwarizmi on the Hindu Art of Reckoning which describes the Indian place-value system of numerals based on 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0. This work was the first in what is now Iraq to use zero as a place holder in positional base notation. Ibn Ezra, in the 12th century, wrote three treatises on numbers which helped to bring the Indian symbols and ideas of decimal fractions to the attention of some of the learned people in Europe. The Book of the Number describes the decimal system for integers with place values from left to right. In this work ibn Ezra uses zero which he calls galgal (meaning wheel or circle). Slightly later in the 12th century al-Samawal was writing:-

If we subtract a positive number from zero the same negative number remains. ... if we subtract a negative number from zero the same positive number remains.

The Indian ideas spread east to China as well as west to the Islamic countries. In 1247 the Chinese mathematician Ch'in Chiu-Shao wrote Mathematical treatise in nine sections which uses the symbol O for zero. A little later, in 1303, Zhu Shijie wrote Jade mirror of the four elements which again uses the symbol O for zero.

Fibonacci was one of the main people to bring these new ideas about the number system to Europe. As the authors of [12] write:-

An important link between the Hindu-Arabic number system and the European mathematics is the Italian mathematician Fibonacci.

In Liber Abaci he described the nine Indian symbols together with the sign 0 for Europeans in around 1200 but it was not widely used for a long time after that. It is significant that Fibonacci is not bold enough to treat 0 in the same way as the other numbers 1, 2, 3, 4, 5, 6, 7, 8, 9 since he speaks of the "sign" zero while the other symbols he speaks of as numbers. Although clearly bringing the Indian numerals to Europe was of major importance we can see that in his treatment of zero he did not reach the sophistication of the Indians Brahmagupta, Mahavira and Bhaskara nor of the Arabic and Islamic mathematicians such as al-Samawal.

One might have thought that the progress of the number systems in general, and zero in particular, would have been steady from this time on. However, this was far from the case. Cardan solved cubic and quartic equations without using zero. He would have found his work in the 1500's so much easier if he had had a zero but it was not part of his mathematics. By the 1600's zero began to come into widespread use but still only after encountering a lot of resistance.

Of course there are still signs of the problems caused by zero. Recently many people throughout the world celebrated the new millennium on 1 January 2000. Of course they celebrated the passing of only 1999 years since when the calendar was set up no year zero was specified. Although one might forgive the original error, it is a little surprising that most people seemed unable to understand why the third millennium and the 21st century begin on 1 January 2001. Zero is still causing problems!

History of Ganit (Mathematics)

History of Ganit (Mathematics)


Introduction
Ganit (Mathematics) has been considered a very important subject since ancient times. We find very elaborate proof of this in Vedah (which were compiled around 6000 BC). The concept of division, addition et-cetera was used even that time. Concepts of zero and infinite were there. We also find roots of algebra in Vedah. When Indian Beez Ganit reached Arab, they called it Algebra. Algebra was name of the Arabic book that described Indian concepts. This knowledge reached to Europe from there. And thus ancient Indian Beez Ganit is currently referred to as Algebra.

The book Vedang jyotish (written 1000 BC) has mentioned the importance of Ganit as follows-


Meaning: Just as branches of a peacock and jewel-stone of a snake are placed at the highest place of body (forehead), similarly position of Ganit is highest in all the branches of Vedah and Shastras



Famous Jain Mathematician Mahaviracharya has said the following-


Meaning: What is the use of much speaking. Whatever object exists in this moving and nonmoving world, can not be understood without the base of Ganit(Mathematics).



This fact was well known to intellectuals of India that is why they gave special importance to the development of Mathematics, right from the beginning. When this knowledge was negligible in Arab and Europe, India had acquired great achievements.

People from Arab and other countries used to travel to India for commerce. While doing commerce, side by side, they also learnt easy to use calculation methods of India. Through them this knowledge reached to Europe. From time to time many inquisitive foreigners visited India and they delivered this matchless knowledge to their countries. This will not be exaggeration to say that till 12th century India was the World Guru in the area of Mathematics.

The auspicious beginning on Indian Mathematics is in Aadi Granth (ancient/eternal book) Rigved. The history of Indian Mathematics can be divided into 5 parts, as following.

1) Ancient Time (Before 500 BC)

a)Vedic Time (1000 BC-At least 6000 BC)
a)Later Vedic Time (1000 BC-500BC)

2) Pre Middle Time (500 BC- 400 AD)

3) Middle Time or Golden Age (400 AD - 1200 AD)

4) Later Middle Time (1200 AD - 1800 AD)

5) Current Time (After 1800 AD)




1) Ancient Time (Before 500 BC)
Ancient time is very important in the history of Indian Mathematics. In this time different branches of Mathematics, such as Numerical Mathematics; Algebra; Geometrical Mathematics, were properly and strongly established.

There are two main divisions in Ancient Time. Numerical Mathematics developed in Vedic Time and Geometrical Mathematics developed in Later Vedic Time.


1a) Vedic Time (1000 BC-At least 6000 BC)
Numerals and decimals are cleanly mentioned in Vedah (Compiled at lease 6000 BC). There is a Richa in Veda, which says the following-


In the above Richa , Dwadash (12), Treeni (2), Trishat (300) numerals have been used. This indicates the use of writing numerals based on 10.



In this age the discovery of ZERO and "10th place value method"(writing number based on 10) is great contribution to world by India in the arena of Mathematics.

If "zero" and "10 based numbers" were not discovered, it would not have been possible today to write big numbers.

The great scholar of America Dr. G. B. Halsteed has also praised this. Shlegal has also accepted that this is the second greatest achievement of human race after the discovery of Alphabets.

This is not known for certain that who invented "zero" and when. But it has been in use right from the "vedic" time. The importance of "zero" and "10th place value method" is manifested by their wide spread use in today's world. This discovery is the one that has helped science to reach its current status.

In the second section of earlier portion of Narad Vishnu Puran (written by Ved Vyas) describes "mathematics" in the context of Triskandh Jyotish. In that numbers have been described which are ten times of each other, in a sequence (10 to the power n). Not only that in this book, different methods of "mathematics" like Addition, Subtraction, Multiplication, Addition, Fraction, Square, Square root, Cube root et-cetera have been elaborately discussed. Problems based on these have also been solved.

This proves at that time various mathematical methods were not in concept stage, rather those were getting used in a methodical and expanded manner.

"10th place value method" dispersed from India to Arab. From there it got transferred to Western countries. This is the reason that digits from 1-9 are called "hindsa" by the people of Arab. In western countries 0,1,2,3,4,5,6,7,8,9 are called Hindu-Arabic Numerals.


1b) Later Vedic Time (1000 BC - 500 BC)

1b.1) Shulv and Vedang Jyotish Time
Vedi was very important while performing rituals. On the top of "Vedi" different type of geomit(geometry: as you notice this word is derived from a Sanskrit word)) were made. To measure those geometry properly, "geometrical mathematics" was developed. That knowledge was available in form of Shulv Sutras (Shulv Formulae). Shulv means rope. This rope was used in measuring geometry while making vedis.

In that time we had three great formulators-Baudhayan, Aapstamb and Pratyayan. Apart from them Manav, Matrayan, Varah and Bandhul are also famous mathematician of that time.

The following excerpt from "Baudhayan Sulv Sutra (1000 BC)" is today known as Paithogorus Theorem (amazing, isn't it ?)


In the above formula , the following has been said. In a Deerghchatursh (Rectangle) the Chetra (Square) of Rajju (hypotenuse) is equal to sum of squares of Parshvamani (base) and Triyangmani (perpendicular).



In the same book Baudhayan has discussed the method of making a square equal to difference of two squares. He has also described method of making a square shape equal to addition of two squares. He has also mentioned the formula to find the value (upto five decimal places) of a root (square root, cube root ...) a number, according to that the square root of 2 can be found as below-



While Geometric Mathematics was developed for making Vedi in Yagya , in parallel there was a need to find appropriate timing for Yagya. This need led to development of Geotish Shastra (Astrology) In Geotish Shastra (Astrology) they calculated time, position and motion of stars. By reading the book Vedanga Jyotish (At least 1000 BC) we find that astrologers knew about addition, multiplication, subtraction et-cetera. For example please read below-

Meaning: Multiply the date by 11, then add to it the "Bhansh" of "Parv" and then divide it by "Nakshatra" number. In this way the "Nakshtra" of date should be told.



1b.2) Surya Pragyapti Time
We find elaborated description of Mathematics in the Jain literature. In fact the clarity and elaboration by which Mathematics is described in Jain literature, indicates the tendency of Jain philosophy to convey the knowledge to the language and level of common people (This is in deviation to the style of Veda which told the facts indirectly).

Surya Pragyapti and Chandra Pragyapti (At least 500 BC) are two famous scriptures of Jain branch of Ancient India. These describe the use of Mathematics.

Deergha Vritt (ellipse) is clearly described in the book titled Surya Pragyapti. "Deergha Vritt" means the outer circle (Vritta) on a rectangle(Deergha), that was also known as Parimandal.
This is clear that Indians had discovered this at least 150 years before Minmax (150 BC). As this history was not known to the West so they consider Minmax as the first time founder of ellipse.


This is worth mentioning that in the book Bhagvati Sutra (Before 300 BC) the word Parimandal has been used for Deergha Vritt (ellipse). It has been described to have two types 1) Pratarparimandal and 2)Ghanpratarparimandal.

Jain Aacharyas contributed a lot in the development of Mathematics. These gurus have described different branches of mathematics in a very through and interesting manner. They are examples too.

They have described fractions, algebraic equations, series, set theory, logarithm, and exponents .... Under the set theory they have described with examples- finite, infinite, single sets. For logarithm they have used terms like Ardh Aached , Trik Aached, Chatur Aached. These terms mean log base 2, log base 3 and log base 4 respectively. Well before Joan Napier (1550-1617 AD), logarithm had been invented and used in India which is a universal truth.

Buddha literature has also given due importance to Mathematics. They have divided Mathematics under two categories- 1) Garna (Simple Mathematics) and 2)Sankhyan (Higher Mathematics). They have described numbers under three categories-1)Sankheya(countable),2)Asankheya(uncountable) and 3)Anant(infinite). Which clearly indicates that Indian Intellectuals knew "infinite number" very well.




2) Pre Middle Time (500 BC- 400 AD)
This is unfortunate that except for the few pages of the books Vaychali Ganit, Surya Siddhanta and Ganita Anoyog of this time, rest of the writings of this time are lost. From the remainder pages of this time and the literature of Aryabhatt, Brahamgupt et-cetera of Middle Time, we can conclude that in this time too Mathematics underwent sufficient development.

Sathanang Sutra, Bhagvati Sutra and Anoyogdwar Sutra are famous books of this time. Apart from these the book titled Tatvarthaadigyam Sutra Bhashya of Jain philosopher Omaswati (135 BC) and the book titled Tiloyapannati of Aacharya (Guru) Yativrisham (176 BC) are famous writings of this time.

The book titled Vaychali Ganit discusses in detail the following -the basic calculations of mathematics, the numbers based on 10, fraction, square, cube, rule of false position, interest methods, questions on purchase and sale... The book has given the answers of the problems and also described testing methods. Vachali Ganit is a proof of the fact that even at that time (300 BC) India was using various methods of the current Numerical Mathematics. This is noticeable that this book is the only written Hindu Ganit book of this time that was found as a few survived pages in village Vaychat Gram (Peshawar) in 1000 AD.

Sathanang Sutra has mentioned five types of infinite and Anoyogdwar Sutra has mentioned four types of Pramaan (Measure). This Granth(book) has also described permutations and combinations which are termed as Bhang and Vikalp .

This is worth mentioning that in the book Bhagvati Sutra describes the following. From n types taking 1-1,2-2 types together the combinations such made are termed as Akak, Dwik Sanyog and the value of such combinations is mentioned as n(n-1)/2 which is used even today.

Roots of the Modern Trignometry lie in the book titled Surya Siddhanta . It mentions Zya(Sine), Otkram Zya(Versesine), and Kotizya(Cosine). Please remember that the same word (Zia) changed to "Jaib" in Arab. The translation of Jaib in Latin was done as "Sinus". And this "Sinus" became "Sine" later on.

This is worth mentioning that Trikonmiti word is pure Indian and with the time it changed to Trignometry. Indians used Trignometry in deciding the position , motion et-cetera of the spatial planets.

In this time the expansion of Beezganit (When this knowledge reached Arab from India it became Algebra)was revolutionary. The roots of Modern Algebra lie in the book Vaychali Ganit. In this book while describing Isht KarmaIsht Karm "Rule of False" as the origin of expansion of Algebra. Thus Algebra is also gifted to world by Indians

Although almost all ancient countries used quantities of unknown values and using them found the result of Numerical Mathematics. However the the expansion of Beez Ganit (Now known as Alzebra) became possible when right denotion method was developed. The glory for this goes to Indians who for the first time used Sanskrit Alphabet to denote unknown quantities. Infact expansion of Beez Ganit (Now known as Alzebra) became possible when Indians realized that all the calculations of Numerical Mathematics could be done by notations. And that +, - these signs can be used with those notations.

Indians developed rules of addition, subtraction, multiplication with these signs (+,-,x). In this context we can not forget the contribution of great mathematician Brahmgupt (628 AD). He said-

The multiplication of a positive number with a negative number comes out to be a negative number and multiplication of a positive number with a positive number comes out to be a positive number.
He further told:
When a positive number is divided by a positive number the result is a positive number and when a positive number is divided by a negative number or a negative number is divided by a positive number the result is a negative number.

Indians used notations for squares, cube and other exponents of numbers. Those notations are used even today in the mathematics. They gave shape to Beezganit Samikaran(Algebraic Equations). They made rules for transferring the quantities from left to right or right to left in an equation. Right from the 5th century AD, Indians majorly used aforementioned rules.

In the book titled Anoyogdwar Sutra has described some rules of exponents in Beez Ganit (Later the name Algebra became more popular). Please find below a few examples.




Thus it proves that Beez Ganit (Later the name Algebra became more popular) was well expanded by the mathematicians of Pre-middle Time. This was more expanded in the Middle Time.

It is without doubt that like Aank Ganit (Numerical Mathematics) Beez Ganit (Later the name Algebra became more popular) reached Arab from India. Arab mathematician Al-Khowarizmi (780-850 AD) has described topics based on Indian Beez Ganit in his book titled "Algebr". And when it reached Europe it was called Algebra.


As for as other countries are concerned we find that in the golden time of Greece Mathematics there was no sign of Algebra with respect to modern concept of Algebra. In classical period Greece people had ability to solve tough questions of Beez Ganit (Later the name Algebra became more popular) but there all solutions were based on Geometrical Mathematics. For the first time in Greece world, the concept of Beez Ganit (Later the name Algebra became more popular) is described in a books of Diofantus (275 AD). By that time Indians were far ahead. This is worth noting that the shape and form of current Beez Ganit (Later the name Algebra became more popular) is originally Indian.



3) Middle Time or Golden Age 400 AD- 1200 AD)
This period is called golden age of Indian Mathematics. In this time great mathematicians like Aryabhatt, Brahmgupt, Mahaveeracharya, Bhaskaracharya who gave a broad and clear shape to almost all the branches of mathematics which we are using today. The principles and methods which are in form of Sutra(formulae) in Vedas were brought forward with their full potential, in front of the common masses. To respect this time India gave the name "Aryabhatt" to its first space satellite.

The following is the description about great mathematicians and their creations.


Aryabhatt (First) (490 AD)
He was a resident of Patna in India. He has described, in a very crisp and concise manner, the important fundamental principles of Mathematics only in 332 Shlokas. His book is titled Aryabhattiya. In the first two sections of Aryabhattiya, Mathematics is described. In the last two sections of Aryabhattiya, Jyotish (Astrology) is described. In the first section of the book, he has described the method of denoting big decimal numbers by the alphabets.

In the second section of the book Aryabhattiya we find difficult questions from topics such as Numerical Mathematics, Geometrical Mathematics, Trignometry and Beezganit (Algebra). He also worked on indeterminate equations of Beezganit (Later in West it was called Algebra). He was the first to use Vyutkram Zia (Which was later known as Versesine in the West) in Trignometry. He calculated the value of pi correct upto four decimal places.


He was first to find that the sun is stationary and the earth revolves around it. 1100 years later, this fact was accepted by Coppernix of West in 16th century. Galileo was hanged for accepting this.


Bhaskar (First) (600 AD)
He did matchless work on Indeterminate equations. He expanded the work of Aryabhatt in his books titled Mahabhaskariya, Aryabhattiya Bhashya and Laghu Bhaskariya .


Brahmgupt (628 AD)
His famous work is his book titled Brahm-sfut. This book has 25 chapters. In two chapters of the book, he has elaborately described the mathematical principles and methods. He threw light on around 20 processes and behavior of Mathematics. He described the rules of the solving equations of Beezganit (Algebra). He also told the solution of indeterminate equations with two exponent. Later Ailer in 1764 AD and Langrez in 1768 described the same.

Brahmgupt told the method of calculating the volume of Prism and Cone. He also described how to sum a GP Series. He was the first to tell that when we divide any positive or negative number by zero it becomes infinite.


Mahaveeracharya (850 AD)
He wrote the book titled "Ganit Saar Sangraha". This book is on Numerical Mathematics. He has described the currently used method of calculating Least Common Multiple (LCM) of given numbers. The same method was used in Europe later in 1500 AD. He derived formulae to calculate the area of ellipse and quadrilateral inside a circle.


Shridharacharya (850 AD)
He wrote books titled "Nav Shatika", "Tri Shatika", "Pati Ganit". These books are on Numerical Mathematics. His books on Beez Ganit (Algebra) are lost now, but his method of solving quadratic equations is still used. This is method is also called "Shridharacharya Niyam". The great thing is that currently we use the same formula as told by him. His book titled "Pati Ganit" has been translated into Arabic by the name "Hisabul Tarapt".


Aryabhatta Second (950 AD)
He wrote a book titled Maha Siddhanta. This book discusses Numerical Mathematics (Ank Ganit) and Algebra. It describes the method of solving algebraic indeterminate equations of first order. He was the first to calculate the surface area of a sphere. He used the value of pi as 22/7.


Shripati Mishra (1039 AD)
He wrote the books titled Siddhanta Shekhar and Ganit Tilak. He worked mainly on permutations and combinations. Only first section of his book Ganit Tilak is available.


Nemichandra Siddhanta Chakravati (1100 AD)
His famous book is titled Gome-mat Saar. It has two sections. The first section is Karma Kaand and the second section is titled Jeev Kaand. He worked on Set Theory. He described universal sets, all types of mapping, Well Ordering Theorems et-cetera.One to One Mapping was used by Gailileo and George Kanter(1845-1918) after many centuries.


Bhaskaracharya Second (1114 AD)
He has written excellent books namely Siddhanta Shiromani,Leelavati Beezganitam,Gola Addhaya,Griha Ganitam and Karan Kautoohal. He gave final touch to Numerical Mathematics, Beez Ganit (Algebra), and Trikonmiti (Trignometry).

The concepts which were in the form of formulae in Vedah. He has also described 20 methods and 8 behaviors of Brahamgupt.

Great Hankal has praised a lot Bhaskaracharya's Chakrawaat Method of solving indeterminate equations of Beezganit (Algebra). This Bhaskaracharya's Chakrawaat Method was used by Ferment in 1667 to solve indeterminate equations.

In his book Siddhanta Shiromani, he has described in length the concepts of Trignometry. He has described Sine, Cosine, Versesine,... Infinitesimal Calculus and Integration. He wrote that earth has gravitational force.




3) Later Middle Period (1200 AD- 1800 AD)
Not much original work was done after Bhaskaracharya Second. Comments on ancient texts are the main contribution of this period.

In his book (1500 AD), the mathematician Neel Kantha of Kerla has given the following formula to calculate Sine r -



The same formula is given in the Malyalam book Mookti Bhaas. These days this series is called Greygeries Series. The following is a descriptions of the famous mathematicians of this period.


Narayan Pundit (1356 AD)
He wrote the book titled Ganit Kaumidi. This book deals with Permutations and Combinations, Partition of Numbers, Magic Squares.


Neel Kanta (1587 AD)
He wrote the book titled Tagikani Kanti. This book deals with Zeotish Ganit(Astrological Mathematics).


Kamalakar (1608 AD)
He wrote a book titled Siddhanta Tatwa Viveka.


Samraat Jagannath (1731 AD)
He wrote two books titled Samraat Siddhanta and Rekha Ganit (Line Mathematics)

Apart from the above-mentioned mathematicians we have a few more worth mentioning mathematicians. From Kerla we have Madhav (1350-1410 AD). Jyeshta Deva (1500-1610 AD) wrote a book titled Ukti Bhasha. Shankar Paarshav (1500-1560 AD) wrote a book titled Kriya Kramkari.




3) Current Period (1800 AD- Current)
Please find below a list of famous mathematicians and their writings.



Nrisingh Bapudev Shastri (1831 AD)
He wrote books on Geometrical Mathematics, Numerical Mathematics and Trignometry.


Sudhakar Dwivedi (1831 AD)
He wrote books titled Deergha Vritta Lakshan(which means characteristics of ellipse), Goleeya Rekha Ganit(which means sphere line mathematics),Samikaran Meemansa(which means analysis of equations) and Chalan Kalan.


Ramanujam (1889 AD)
Ramanujam is a modern mathematics scholar. He followed the vedic style of writing mathematical concepts in terms of formulae and then proving it. His intellectuality is proved by the fact it took all mettle of current mathematicians to prove a few out of his total 50 theorems.


Swami Bharti Krishnateerthaji Maharaj (1884-1960 AD)
He wrote the book titled Vedic Ganit.
www.piyushdadriwalamaths.co.in

An overview of Indian mathematics

An overview of Indian mathematics

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Ancient Indian Mathematics index History Topics Index


Version for printing
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It is without doubt that mathematics today owes a huge debt to the outstanding contributions made by Indian mathematicians over many hundreds of years. What is quite surprising is that there has been a reluctance to recognise this and one has to conclude that many famous historians of mathematics found what they expected to find, or perhaps even what they hoped to find, rather than to realise what was so clear in front of them.

We shall examine the contributions of Indian mathematics in this article, but before looking at this contribution in more detail we should say clearly that the "huge debt" is the beautiful number system invented by the Indians on which much of mathematical development has rested. Laplace put this with great clarity:-

The ingenious method of expressing every possible number using a set of ten symbols (each symbol having a place value and an absolute value) emerged in India. The idea seems so simple nowadays that its significance and profound importance is no longer appreciated. Its simplicity lies in the way it facilitated calculation and placed arithmetic foremost amongst useful inventions. the importance of this invention is more readily appreciated when one considers that it was beyond the two greatest men of Antiquity, Archimedes and Apollonius.

We shall look briefly at the Indian development of the place-value decimal system of numbers later in this article and in somewhat more detail in the separate article Indian numerals. First, however, we go back to the first evidence of mathematics developing in India.

Histories of Indian mathematics used to begin by describing the geometry contained in the Sulbasutras but research into the history of Indian mathematics has shown that the essentials of this geometry were older being contained in the altar constructions described in the Vedic mythology text the Shatapatha Brahmana and the Taittiriya Samhita. Also it has been shown that the study of mathematical astronomy in India goes back to at least the third millennium BC and mathematics and geometry must have existed to support this study in these ancient times.

The first mathematics which we shall describe in this article developed in the Indus valley. The earliest known urban Indian culture was first identified in 1921 at Harappa in the Punjab and then, one year later, at Mohenjo-daro, near the Indus River in the Sindh. Both these sites are now in Pakistan but this is still covered by our term "Indian mathematics" which, in this article, refers to mathematics developed in the Indian subcontinent. The Indus civilisation (or Harappan civilisation as it is sometimes known) was based in these two cities and also in over a hundred small towns and villages. It was a civilisation which began around 2500 BC and survived until 1700 BC or later. The people were literate and used a written script containing around 500 characters which some have claimed to have deciphered but, being far from clear that this is the case, much research remains to be done before a full appreciation of the mathematical achievements of this ancient civilisation can be fully assessed.

We often think of Egyptians and Babylonians as being the height of civilisation and of mathematical skills around the period of the Indus civilisation, yet V G Childe in New Light on the Most Ancient East (1952) wrote:-

India confronts Egypt and Babylonia by the 3rd millennium with a thoroughly individual and independent civilisation of her own, technically the peer of the rest. And plainly it is deeply rooted in Indian soil. The Indus civilisation represents a very perfect adjustment of human life to a specific environment. And it has endured; it is already specifically Indian and forms the basis of modern Indian culture.

We do know that the Harappans had adopted a uniform system of weights and measures. An analysis of the weights discovered suggests that they belong to two series both being decimal in nature with each decimal number multiplied and divided by two, giving for the main series ratios of 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10, 20, 50, 100, 200, and 500. Several scales for the measurement of length were also discovered during excavations. One was a decimal scale based on a unit of measurement of 1.32 inches (3.35 centimetres) which has been called the "Indus inch". Of course ten units is then 13.2 inches which is quite believable as the measure of a "foot". A similar measure based on the length of a foot is present in other parts of Asia and beyond. Another scale was discovered when a bronze rod was found which was marked in lengths of 0.367 inches. It is certainly surprising the accuracy with which these scales are marked. Now 100 units of this measure is 36.7 inches which is the measure of a stride. Measurements of the ruins of the buildings which have been excavated show that these units of length were accurately used by the Harappans in construction.

It is unclear exactly what caused the decline in the Harappan civilisation. Historians have suggested four possible causes: a change in climatic patterns and a consequent agricultural crisis; a climatic disaster such flooding or severe drought; disease spread by epidemic; or the invasion of Indo-Aryans peoples from the north. The favourite theory used to be the last of the four, but recent opinions favour one of the first three. What is certainly true is that eventually the Indo-Aryans peoples from the north did spread over the region. This brings us to the earliest literary record of Indian culture, the Vedas which were composed in Vedic Sanskrit, between 1500 BC and 800 BC. At first these texts, consisting of hymns, spells, and ritual observations, were transmitted orally. Later the texts became written works for use of those practicing the Vedic religion.

The next mathematics of importance on the Indian subcontinent was associated with these religious texts. It consisted of the Sulbasutras which were appendices to the Vedas giving rules for constructing altars. They contained quite an amount of geometrical knowledge, but the mathematics was being developed, not for its own sake, but purely for practical religious purposes. The mathematics contained in the these texts is studied in some detail in the separate article on the Sulbasutras.

The main Sulbasutras were composed by Baudhayana (about 800 BC), Manava (about 750 BC), Apastamba (about 600 BC), and Katyayana (about 200 BC). These men were both priests and scholars but they were not mathematicians in the modern sense. Although we have no information on these men other than the texts they wrote, we have included them in our biographies of mathematicians. There is another scholar, who again was not a mathematician in the usual sense, who lived around this period. That was Panini who achieved remarkable results in his studies of Sanskrit grammar. Now one might reasonably ask what Sanskrit grammar has to do with mathematics. It certainly has something to do with modern theoretical computer science, for a mathematician or computer scientist working with formal language theory will recognise just how modern some of Panini's ideas are.

Before the end of the period of the Sulbasutras, around the middle of the third century BC, the Brahmi numerals had begun to appear.




Here is one style of the Brahmi numerals..


These are the earliest numerals which, after a multitude of changes, eventually developed into the numerals 1, 2, 3, 4, 5, 6, 7, 8, 9 used today. The development of numerals and place-valued number systems are studied in the article Indian numerals.

The Vedic religion with its sacrificial rites began to wane and other religions began to replace it. One of these was Jainism, a religion and philosophy which was founded in India around the 6th century BC. Although the period after the decline of the Vedic religion up to the time of Aryabhata I around 500 AD used to be considered as a dark period in Indian mathematics, recently it has been recognised as a time when many mathematical ideas were considered. In fact Aryabhata is now thought of as summarising the mathematical developments of the Jaina as well as beginning the next phase.

The main topics of Jaina mathematics in around 150 BC were: the theory of numbers, arithmetical operations, geometry, operations with fractions, simple equations, cubic equations, quartic equations, and permutations and combinations. More surprisingly the Jaina developed a theory of the infinite containing different levels of infinity, a primitive understanding of indices, and some notion of logarithms to base 2. One of the difficult problems facing historians of mathematics is deciding on the date of the Bakhshali manuscript. If this is a work which is indeed from 400 AD, or at any rate a copy of a work which was originally written at this time, then our understanding of the achievements of Jaina mathematics will be greatly enhanced. While there is so much uncertainty over the date, a topic discussed fully in our article on the Bakhshali manuscript, then we should avoid rewriting the history of the Jaina period in the light of the mathematics contained in this remarkable document.

You can see a separate article about Jaina mathematics.

If the Vedic religion gave rise to a study of mathematics for constructing sacrificial altars, then it was Jaina cosmology which led to ideas of the infinite in Jaina mathematics. Later mathematical advances were often driven by the study of astronomy. Well perhaps it would be more accurate to say that astrology formed the driving force since it was that "science" which required accurate information about the planets and other heavenly bodies and so encouraged the development of mathematics. Religion too played a major role in astronomical investigations in India for accurate calendars had to be prepared to allow religious observances to occur at the correct times. Mathematics then was still an applied science in India for many centuries with mathematicians developing methods to solve practical problems.

Yavanesvara, in the second century AD, played an important role in popularising astrology when he translated a Greek astrology text dating from 120 BC. If he had made a literal translation it is doubtful whether it would have been of interest to more than a few academically minded people. He popularised the text, however, by resetting the whole work into Indian culture using Hindu images with the Indian caste system integrated into his text.

By about 500 AD the classical era of Indian mathematics began with the work of Aryabhata. His work was both a summary of Jaina mathematics and the beginning of new era for astronomy and mathematics. His ideas of astronomy were truly remarkable. He replaced the two demons Rahu, the Dhruva Rahu which causes the phases of the Moon and the Parva Rahu which causes an eclipse by covering the Moon or Sun or their light, with a modern theory of eclipses. He introduced trigonometry in order to make his astronomical calculations, based on the Greek epicycle theory, and he solved with integer solutions indeterminate equations which arose in astronomical theories.

Aryabhata headed a research centre for mathematics and astronomy at Kusumapura in the northeast of the Indian subcontinent. There a school studying his ideas grew up there but more than that, Aryabhata set the agenda for mathematical and astronomical research in India for many centuries to come. Another mathematical and astronomical centre was at Ujjain, also in the north of the Indian subcontinent, which grew up around the same time as Kusumapura. The most important of the mathematicians at this second centre was Varahamihira who also made important contributions to astronomy and trigonometry.

The main ideas of Jaina mathematics, particularly those relating to its cosmology with its passion for large finite numbers and infinite numbers, continued to flourish with scholars such as Yativrsabha. He was a contemporary of Varahamihira and of the slightly older Aryabhata. We should also note that the two schools at Kusumapura and Ujjain were involved in the continuing developments of the numerals and of place-valued number systems. The next figure of major importance at the Ujjain school was Brahmagupta near the beginning of the seventh century AD and he would make one of the most major contributions to the development of the numbers systems with his remarkable contributions on negative numbers and zero. It is a sobering thought that eight hundred years later European mathematics would be struggling to cope without the use of negative numbers and of zero.

These were certainly not Brahmagupta's only contributions to mathematics. Far from it for he made other major contributions in to the understanding of integer solutions to indeterminate equations and to interpolation formulas invented to aid the computation of sine tables.

The way that the contributions of these mathematicians were prompted by a study of methods in spherical astronomy is described in [25]:-

The Hindu astronomers did not possess a general method for solving problems in spherical astronomy, unlike the Greeks who systematically followed the method of Ptolemy, based on the well-known theorem of Menelaus. But, by means of suitable constructions within the armillary sphere, they were able to reduce many of their problems to comparison of similar right-angled plane triangles. In addition to this device, they sometimes also used the theory of quadratic equations, or applied the method of successive approximations. ... Of the methods taught by Aryabhata and demonstrated by his scholiast Bhaskara I, some are based on comparison of similar right-angled plane triangles, and others are derived from inference. Brahmagupta is probably the earliest astronomer to have employed the theory of quadratic equations and the method of successive approximations to solving problems in spherical astronomy.

Before continuing to describe the developments through the classical period we should explain the mechanisms which allowed mathematics to flourish in India during these centuries. The educational system in India at this time did not allow talented people with ability to receive training in mathematics or astronomy. Rather the whole educational system was family based. There were a number of families who carried the traditions of astrology, astronomy and mathematics forward by educating each new generation of the family in the skills which had been developed. We should also note that astronomy and mathematics developed on their own, separate for the development of other areas of knowledge.

Now a "mathematical family" would have a library which contained the writing of the previous generations. These writings would most likely be commentaries on earlier works such as the Aryabhatiya of Aryabhata. Many of the commentaries would be commentaries on commentaries on commentaries etc. Mathematicians often wrote commentaries on their own work. They would not be aiming to provide texts to be used in educating people outside the family, nor would they be looking for innovative ideas in astronomy. Again religion was the key, for astronomy was considered to be of divine origin and each family would remain faithful to the revelations of the subject as presented by their gods. To seek fundamental changes would be unthinkable for in asking others to accept such changes would be essentially asking them to change religious belief. Nor do these men appear to have made astronomical observations in any systematic way. Some of the texts do claim that the computed data presented in them is in better agreement with observation than that of their predecessors but, despite this, there does not seem to have been a major observational programme set up. Paramesvara in the late fourteenth century appears to be one of the first Indian mathematicians to make systematic observations over many years.

Mathematics however was in a different position. It was only a tool used for making astronomical calculations. If one could produce innovative mathematical ideas then one could exhibit the truths of astronomy more easily. The mathematics therefore had to lead to the same answers as had been reached before but it was certainly good if it could achieve these more easily or with greater clarity. This meant that despite mathematics only being used as a computational tool for astronomy, the brilliant Indian scholars were encouraged by their culture to put their genius into advances in this topic.

A contemporary of Brahmagupta who headed the research centre at Ujjain was Bhaskara I who led the Asmaka school. This school would have the study of the works of Aryabhata as their main concern and certainly Bhaskara was commentator on the mathematics of Aryabhata. More than 100 years after Bhaskara lived the astronomer Lalla, another commentator on Aryabhata.

The ninth century saw mathematical progress with scholars such as Govindasvami, Mahavira, Prthudakasvami, Sankara, and Sridhara. Some of these such as Govindasvami and Sankara were commentators on the text of Bhaskara I while Mahavira was famed for his updating of Brahmagupta's book. This period saw developments in sine tables, solving equations, algebraic notation, quadratics, indeterminate equations, and improvements to the number systems. The agenda was still basically that set by Aryabhata and the topics being developed those in his work.

The main mathematicians of the tenth century in India were Aryabhata II and Vijayanandi, both adding to the understanding of sine tables and trigonometry to support their astronomical calculations. In the eleventh century Sripati and Brahmadeva were major figures but perhaps the most outstanding of all was Bhaskara II in the twelfth century. He worked on algebra, number systems, and astronomy. He wrote beautiful texts illustrated with mathematical problems, some of which we present in his biography, and he provided the best summary of the mathematics and astronomy of the classical period.

Bhaskara II may be considered the high point of Indian mathematics but at one time this was all that was known [26]:-

For a long time Western scholars thought that Indians had not done any original work till the time of Bhaskara II. This is far from the truth. Nor has the growth of Indian mathematics stopped with Bhaskara II. Quite a few results of Indian mathematicians have been rediscovered by Europeans. For instance, the development of number theory, the theory of indeterminates infinite series expressions for sine, cosine and tangent, computational mathematics, etc.

Following Bhaskara II there was over 200 years before any other major contributions to mathematics were made on the Indian subcontinent. In fact for a long time it was thought that Bhaskara II represented the end of mathematical developments in the Indian subcontinent until modern times. However in the second half of the fourteenth century Mahendra Suri wrote the first Indian treatise on the astrolabe and Narayana wrote an important commentary on Bhaskara II, making important contributions to algebra and magic squares. The most remarkable contribution from this period, however, was by Madhava who invented Taylor series and rigorous mathematical analysis in some inspired contributions. Madhava was from Kerala and his work there inspired a school of followers such as Nilakantha and Jyesthadeva.

Some of the remarkable discoveries of the Kerala mathematicians are described in [26]. These include: a formula for the ecliptic; the Newton-Gauss interpolation formula; the formula for the sum of an infinite series; Lhuilier's formula for the circumradius of a cyclic quadrilateral. Of particular interest is the approximation to the value of π which was the first to be made using a series. Madhava's result which gave a series for π, translated into the language of modern mathematics, reads

π R = 4R - 4R/3 + 4R/5 - ...

This formula, as well as several others referred to above, were rediscovered by European mathematicians several centuries later. Madhava also gave other formulae for π, one of which leads to the approximation 3.14159265359.

The first person in modern times to realise that the mathematicians of Kerala had anticipated some of the results of the Europeans on the calculus by nearly 300 years was Charles Whish in 1835. Whish's publication in the Transactions of the Royal Asiatic Society of Great Britain and Ireland was essentially unnoticed by historians of mathematics. Only 100 years later in the 1940s did historians of mathematics look in detail at the works of Kerala's mathematicians and find that the remarkable claims made by Whish were essentially true. See for example [15]. Indeed the Kerala mathematicians had, as Whish wrote:-

... laid the foundation for a complete system of fluxions ...

and these works:-

... abound with fluxional forms and series to be found in no work of foreign countries.

There were other major advances in Kerala at around this time. Citrabhanu was a sixteenth century mathematicians from Kerala who gave integer solutions to twenty-one types of systems of two algebraic equations. These types are all the possible pairs of equations of the following seven forms:

x + y = a, x - y = b, xy = c, x2 + y2 = d, x2 - y2 = e, x3 + y3 = f, and x3 - y3 = g.

For each case, Citrabhanu gave an explanation and justification of his rule as well as an example. Some of his explanations are algebraic, while others are geometric. See [12] for more details.

Now we have presented the latter part of the history of Indian mathematics in an unlikely way. That there would be essentially no progress between the contributions of Bhaskara II and the innovations of Madhava, who was far more innovative than any other Indian mathematician producing a totally new perspective on mathematics, seems unlikely. Much more likely is that we are unaware of the contributions made over this 200 year period which must have provided the foundations on which Madhava built his theories.

Our understanding of the contributions of Indian mathematicians has changed markedly over the last few decades. Much more work needs to be done to further our understanding of the contributions of mathematicians whose work has sadly been lost, or perhaps even worse, been ignored. Indeed work is now being undertaken and we should soon have a better understanding of this important part of the history of mathematics.

"(PIYUSH CONSTANT)

SUM OF EACH DIGIT REMAINS "9"(PIYUSH CONSTANT)
Fri, 2006-07-21 22:34 — piyushdadriwala
SUM OF EACH DIGIT REMAINS SAME(9),NINE
I AM VERY MUCH FOND OF MATHS ,WHATEVER I AM WRITING HERE IS AMAZING,INTERESTING,LEARN IT,VERY SIMPLE.(FOR ANY NO OF DIGITS)
NOW,I HAVE 25 AND 32, MULTIPLE THEM ,NOW YOU CAN MULTIPLE THEM IN FOUR WAYS LIKE THAT(just changing the position)
25*32=800
52*32=1664
25*23=575
52*23=1196
now substract any bigger to any lower you will always get sum of each digit nine.
1664-1196=468(4+6+8=18=1+8=9)
1664-800=864(8+6+4+18=1+8+=9)
1664-575=1089(1+0+8+9=18=1+8=9)
1196-800=396(3+9+6=18=1+8=9)
1196-575=621(6+2+1=9)
800-575=225(2+2+5=9).
this i called "piyush contant"
with lot of regards
piyushdadriwala
www.piyush-g.741.com
pkgdwala@rediffmail.com
in the next topic"what all GODS HAVE COMMON".

www.piyushdadriwalamaths.co.in

पीयूष creation

Home


My famous thoughts are:

Without God, A man is reverse of God - (Dog)

Luck is as lock, you have it's key.
Click right, it opens.
Click left, it closes

Who loves, always feel with.

God is one but you are many.

A man is of God, but a mind of a man.







The lines that I love most:

I love East because Sun rises,
I love North, Head is
I love South, Sea is
I love but do not love West because Sun Sets.







In front of eye (I)

I want to be busy, do all the work with shy.
Go here or there or fly
Days going high with cry
In front of eye (I)
All good works as God.
Off and on thou scold.
Says, do your duty with the beauty.
Days going down, months coming high
In front of eye (I)
Keep head, hand and heart in the line
Without fear do your fine offend on you will come on line.
Months going, years coming
In front of eye (I)
I want to be busy all the life. All the doing work put in your feet.
Without hate, with faith
Years have gone, some yet to be.
In front of eye (I).







Piyush Thoughts

The thoughts which came in dream.

To imagine is everything.
Pain is sure in gain.
Make your mouth sweet.
Love is heart, by mind
Love makes the way to God.
Time says: Ti-ght-Me otherwise going.
Present is past in future.
Soul is the only precious thing of this world.
A wise thing before doing, but a mad after
Complete you aim within goal, in the goal, always back clockwise.
God: before dying you, ours. But after dying we yours.
Money makes man miser.
See, then lift good, think, than left bad.
Next day, this day will never come.
Luck is a duck, can fly, swim and walk.
In this world there are lot of yesterdays, not many tomorrows.
Much time required, to be good to be bad a few.
We know God, but God know us or not we don't know.







At last

OH! God lot of sorrow
By sorrow
I keep on always
Learning you
All the day
All the way
I believe on you.
How much!
Perhaps
Thou not know.


My words to others

Love, Laugh & Live Long Life.

नेलसन mandela

Profile of Nelson Rolihlahla Mandela
Nelson Mandela's greatest pleasure, his most private moment, is watching the sun set with the music of Handel or Tchaikovsky playing.

Locked up in his cell during daylight hours, deprived of music, both these simple pleasures were denied him for decades. With his fellow prisoners, concerts were organised when possible, particularly at Christmas time, where they would sing. Nelson Mandela finds music very uplifting, and takes a keen interest not only in European classical music but also in African choral music and the many talents in South African music. But one voice stands out above all - that of Paul Robeson, whom he describes as our hero.

The years in jail reinforced habits that were already entrenched: the disciplined eating regime of an athlete began in the 1940s, as did the early morning exercise. Still today Nelson Mandela is up by 4.30am, irrespective of how late he has worked the previous evening. By 5am he has begun his exercise routine that lasts at least an hour. Breakfast is by 6.30, when the days newspapers are read. The day s work has begun.

With a standard working day of at least 12 hours, time management is critical and Nelson Mandela is extremely impatient with unpunctuality, regarding it as insulting to those you are dealing with.

When speaking of the extensive travelling he has undertaken since his release from prison, Nelson Mandela says: I was helped when preparing for my release by the biography of Pandit Nehru, who wrote of what happens when you leave jail. My daughter Zinzi says that she grew up without a father, who, when he returned, became a father of the nation. This has placed a great responsibility of my shoulders. And wherever I travel, I immediately begin to miss the familiar - the mine dumps, the colour and smell that is uniquely South African, and, above all, the people. I do not like to be away for any length of time. For me, there is no place like home.

Mandela accepted the Nobel Peace Prize as an accolade to all people who have worked for peace and stood against racism. It was as much an award to his person as it was to the ANC and all South Africa s people. In particular, he regards it as a tribute to the people of Norway who stood against apartheid while many in the world were silent.

We know it was Norway that provided resources for farming; thereby enabling us to grow food; resources for education and vocational training and the provision of accommodation over the years in exile. The reward for all this sacrifice will be the attainment of freedom and democracy in South Africa, in an open society which respects the rights of all individuals. That goal is now in sight, and we have to thank the people and governments of Norway and Sweden for the tremendous role they played.

Personal Tastes

Breakfast of plain porridge, with fresh fruit and fresh milk.
A favourite is the traditionally prepared meat of a freshly slaughtered sheep, and the delicacy Amarhewu (fermented corn-meal).
Biographical Details
Nelson Rolihlahla Mandela was born in a village near Umtata in the Transkei on the 18 July 1918. His father was the principal councillor to the Acting Paramount Chief of Thembuland. After his father s death, the young Rolihlahla became the Paramount Chief s ward to be groomed to assume high office. However, influenced by the cases that came before the Chief s court, he determined to become a lawyer. Hearing the elders stories of his ancestors valour during the wars of resistance in defence of their fatherland, he dreamed also of making his own contribution to the freedom struggle of his people.

After receiving a primary education at a local mission school, Nelson Mandela was sent to Healdtown, a Wesleyan secondary school of some repute where he matriculated. He then enrolled at the University College of Fort Hare for the Bachelor of Arts Degree where he was elected onto the Student's Representative Council. He was suspended from college for joining in a protest boycott. He went to Johannesburg where he completed his BA by correspondence, took articles of clerkship and commenced study for his LLB. He entered politics in earnest while studying in Johannesburg by joining the African National Congress in 1942.

At the height of the Second World War a small group of young Africans, members of the African National Congress, banded together under the leadership of Anton Lembede. Among them were William Nkomo, Walter Sisulu, Oliver R. Tambo, Ashby P. Mda and Nelson Mandela. Starting out with 60 members, all of whom were residing around the Witwatersrand, these young people set themselves the formidable task of transforming the ANC into a mass movement, deriving its strength and motivation from the unlettered millions of working people in the towns and countryside, the peasants in the rural areas and the professionals.

Their chief contention was that the political tactics of the old guard' leadership of the ANC, reared in the tradition of constitutionalism and polite petitioning of the government of the day, were proving inadequate to the tasks of national emancipation. In opposition to the old guard', Lembede and his colleagues espoused a radical African Nationalism grounded in the principle of national self-determination. In September 1944 they came together to found the African National Congress Youth League (ANCYL).

Mandela soon impressed his peers by his disciplined work and consistent effort and was elected to the Secretaryship of the Youth League in 1947. By painstaking work, campaigning at the grassroots and through its mouthpiece Inyaniso' (Truth) the ANCYL was able to canvass support for its policies amongst the ANC membership. At the 1945 annual conference of the ANC, two of the League s leaders, Anton Lembede and Ashby Mda, were elected onto the National Executive Committee (NEC). Two years later another Youth League leader, Oliver R Tambo became a member of the NEC.

Spurred on by the victory of the National Party which won the 1948 all-White elections on the platform of Apartheid, at the 1949 annual conference, the Programme of Action, inspired by the Youth League, which advocated the weapons of boycott, strike, civil disobedience and non-co-operation was accepted as official ANC policy.

The Programme of Action had been drawn up by a sub-committee of the ANCYL composed of David Bopape, Ashby Mda, Nelson Mandela, James Njongwe, Walter Sisulu and Oliver Tambo. To ensure its implementation the membership replaced older leaders with a number of younger men. Walter Sisulu, a founding member of the Youth League was elected Secretary-General. The conservative Dr A.B. Xuma lost the presidency to Dr J.S. Moroka, a man with a reputation for greater militancy. The following year, 1950, Mandela himself was elected to the NEC at national conference.

The ANCYL programme aimed at the attainment of full citizenship, direct parliamentary representation for all South Africans. In policy documents of which Mandela was an important co-author, the ANCYL paid special attention to the redistribution of the land, trade union rights, education and culture. The ANCYL aspired to free and compulsory education for all children, as well as mass education for adults.

When the ANC launched its Campaign for the Defiance of Unjust Laws in 1952, Mandela was elected National Volunteer-in-Chief. The Defiance Campaign was conceived as a mass civil disobedience campaign that would snowball from a core of selected volunteers to involved more and more ordinary people, culminating in mass defiance. Fulfilling his responsibility as Volunteer-in-Chief, Mandela travelled the country organising resistance to discriminatory legislation. Charged and brought to trial for his role in the campaign, the court found that Mandela and his co-accused had consistently advised their followers to adopt a peaceful course of action and to avoid all violence.

For his part in the Defiance Campaign, Mandela was convicted of contravening the Suppression of Communism Act and given a suspended prison sentence. Shortly after the campaign ended, he was also prohibited from attending gatherings and confined to Johannesburg for six months.

During this period of restrictions, Mandela wrote the attorneys admission examination and was admitted to the profession. He opened a practice in Johannesburg, in partnership with Oliver Tambo. In recognition of his outstanding contribution during the Defiance Campaign Mandela had been elected to the presidency of both the Youth League and the Transvaal region of the ANC at the end of 1952, he thus became a deputy president of the ANC itself.

Of their law practice, Oliver Tambo, ANC National Chairman at the time of his death in April 1993, has written:

To reach our desks each morning Nelson and I ran the gauntlet of patient queues of people overflowing from the chairs in the waiting room into the corridors... To be landless (in South Africa) can be a crime, and weekly we interviewed the delegations of peasants who came to tell us how many generations their families had worked a little piece of land from which they were now being ejected... To live in the wrong area can be a crime... Our buff office files carried thousands of these stories and if, when we started our law partnership, we had not been rebels against apartheid, our experiences in our offices would have remedied the deficiency. We had risen to professional status in our community, but every case in court, every visit to the prisons to interview clients, reminded us of the humiliation and suffering burning into our people.

Nor did their professional status earn Mandela and Tambo any personal immunity from the brutal apartheid laws. They fell foul of the land segregation legislation, and the authorities demanded that they move their practice from the city to the back of beyond, as Mandela later put it, miles away from where clients could reach us during working hours. This was tantamount to asking us to abandon our legal practice, to give up the legal service of our people... No attorney worth his salt would easily agree to do that, said Mandela and the partnership resolved to defy the law.

Nor was the government alone in trying to frustrate Mandela s legal practice. On the grounds of his conviction under the Suppression of Communism Act, the Transvaal Law Society petitioned the Supreme Court to strike him off the roll of attorneys. The petition was refused with Mr Justice Ramsbottom finding that Mandela had been moved by a desire to serve his black fellow citizens and nothing he had done showed him to be unworthy to remain in the ranks of an honourable profession.

In 1952 Nelson Mandela was given the responsibility to prepare an organisational plan that would enable the leadership of the movement to maintain dynamic contact with its membership without recourse to public meetings. The objective was to prepare for the contingency of proscription by building up powerful local and regional branches to whom power could be devolved. This was the M-Plan, named after him.

During the early fifties Mandela played an important part in leading the resistance to the Western Areas removals and to the introduction of Bantu Education. He also played a significant role in popularising the Freedom Charter, adopted by the Congress of the People in 1955.

In the late fifties, Mandela s attention turned to the struggles against the exploitation of labour, the pass laws, the nascent Bantustan policy, and the segregation of the open universities. Mandela arrived at the conclusion very early on that the Bantustan policy was a political swindle and an economic absurdity. He predicted, with dismal prescience, that ahead there lay a grim programme of mass evictions, political persecutions, and police terror. On the segregation of the universities, Mandela observed that the friendship and inter-racial harmony that is forged through the admixture and association of various racial groups at the mixed universities constitute a direct threat to the policy of apartheid and baasskap, and that it was to remove that threat that the open universities were being closed to black students.

During the whole of the fifties, Mandela was the victim of various forms of repression. He was banned, arrested and imprisoned. For much of the latter half of the decade, he was one of the accused in the mammoth Treason Trial, at great cost to his legal practice and his political work. After the Sharpeville Massacre in 1960, the ANC was outlawed, and Mandela, still on trial, was detained.

The Treason Trial collapsed in 1961 as South Africa was being steered towards the adoption of the republic constitution. With the ANC now illegal the leadership picked up the threads from its underground headquarters. Nelson Mandela emerged at this time as the leading figure in this new phase of struggle. Under the ANC's inspiration, 1,400 delegates came together at an All-in African Conference in Pietermaritzburg during March 1961. Mandela was the keynote speaker. In an electrifying address he challenged the apartheid regime to convene a national convention, representative of all South Africans to thrash out a new constitution based on democratic principles. Failure to comply, he warned, would compel the majority (Blacks) to observe the forthcoming inauguration of the Republic with a mass general strike. He immediately went underground to lead the campaign. Although fewer answered the call than Mandela had hoped, it attracted considerable support throughout the country. The government responded with the largest military mobilisation since the war, and the Republic was born in an atmosphere of fear and apprehension.

Forced to live apart from his family, moving from place to place to evade detection by the government s ubiquitous informers and police spies, Mandela had to adopt a number of disguises. Sometimes dressed as a common labourer, at other times as a chauffeur, his successful evasion of the police earned him the title of the Black Pimpernel. It was during this time that he, together with other leaders of the ANC constituted a new specialised section of the liberation movement, Umkhonto we Sizwe, as an armed nucleus with a view to preparing for armed struggle. At the Rivonia trial, Mandela explained : "At the beginning of June 1961, after long and anxious assessment of the South African situation, I and some colleagues came to the conclusion that as violence in this country was inevitable, it would be wrong and unrealistic for African leaders to continue preaching peace and non-violence at a time when the government met our peaceful demands with force.

It was only when all else had failed, when all channels of peaceful protest had been barred to us, that the decision was made to embark on violent forms of political struggle, and to form Umkhonto we Sizwe...the Government had left us no other choice."

In 1961 Umkhonto we Sizwe was formed, with Mandela as its commander-in-chief. In 1962 Mandela left the country unlawfully and travelled abroad for several months. In Ethiopia he addressed the Conference of the Pan African Freedom Movement of East and Central Africa, and was warmly received by senior political leaders in several countries. During this trip Mandela, anticipating an intensification of the armed struggle, began to arrange guerrilla training for members of Umkhonto we Sizwe.

Not long after his return to South Africa Mandela was arrested and charged with illegal exit from the country, and incitement to strike.

Since he considered the prosecution a trial of the aspirations of the African people, Mandela decided to conduct his own defence. He applied for the recusal of the magistrate, on the ground that in such a prosecution a judiciary controlled entirely by whites was an interested party and therefore could not be impartial, and on the ground that he owed no duty to obey the laws of a white parliament, in which he was not represented.

Mandela prefaced this challenge with the affirmation: I detest racialism, because I regard it as a barbaric thing, whether it comes from a black man or a white man.

Mandela was convicted and sentenced to five years imprisonment. While serving his sentence he was charged, in the Rivonia Trial, with sabotage. Mandela s statements in court during these trials are classics in the history of the resistance to apartheid, and they have been an inspiration to all who have opposed it. His statement from the dock in the Rivonia Trial ends with these words:

I have fought against white domination, and I have fought against black domination. I have cherished the ideal of a democratic and free society in which all persons live together in harmony and with equal opportunities. It is an ideal which I hope to live for and to achieve. But if needs be, it is an ideal for which I am prepared to die.

Mandela was sentenced to life imprisonment and started his prison years in the notorious Robben Island Prison, a maximum security prison on a small island 7Km off the coast near Cape Town. In April 1984 he was transferred to Pollsmoor Prison in Cape Town and in December 1988 he was moved the Victor Verster Prison near Paarl from where he was eventually released. While in prison, Mandela flatly rejected offers made by his jailers for remission of sentence in exchange for accepting the bantustan policy by recognising the independence of the Transkei and agreeing to settle there. Again in the 'eighties Mandela rejected an offer of release on condition that he renounce violence. Prisoners cannot enter into contracts. Only free men can negotiate, he said.
Click image for map


Released on 11 February 1990, Mandela plunged wholeheartedly into his life's work, striving to attain the goals he and others had set out almost four decades earlier. In 1991, at the first national conference of the ANC held inside South Africa after being banned for decades, Nelson Mandela was elected President of the ANC while his lifelong friend and colleague, Oliver Tambo, became the organisation's National Chairperson.

Nelson Mandela has never wavered in his devotion to democracy, equality and learning. Despite terrible provocation, he has never answered racism with racism. His life has been an inspiration, in South Africa and throughout the world, to all who are oppressed and deprived, to all who are opposed to oppression and deprivation.

In a life that symbolises the triumph of the human spirit over man s inhumanity to man, Nelson Mandela accepted the 1993 Nobel Peace Prize on behalf of all South Africans who suffered and sacrificed so much to bring peace to our land.


--------------------------------------------------------------------------------

A Brief Biography
Mandela's words, "The struggle is my life," are not to be taken lightly.

Nelson Mandela personifies struggle. He is still leading the fight against apartheid with extraordinary vigour and resilience after spending nearly three decades of his life behind bars. He has sacrificed his private life and his youth for his people, and remains South Africa's best known and loved hero.

Mandela has held numerous positions in the ANC: ANCYL secretary (1948); ANCYL president (1950); ANC Transvaal president (1952); deputy national president (1952) and ANC president (1991).

He was born at Qunu, near Umtata on 18 July 1918.

His father, Henry Mgadla Mandela, was chief councillor to Thembuland's acting paramount chief David Dalindyebo. When his father died, Mandela became the chief's ward and was groomed for the chieftainship.

Mandela matriculated at Healdtown Methodist Boarding School and then started a BA degree at Fort Hare. As an SRC member he participated in a student strike and was expelled, along with the late Oliver Tambo, in 1940. He completed his degree by correspondence from Johannesburg, did articles of clerkship and enrolled for an LLB at the University of the Witwatersrand.

In 1944 he helped found the ANC Youth League, whose Programme of Action was adopted by the ANC in 1949.

Mandela was elected national volunteer-in-chief of the 1952 Defiance Campaign. He travelled the country organising resistance to discriminatory legislation.

He was given a suspended sentence for his part in the campaign. Shortly afterwards a banning order confined him to Johannesburg for six months. During this period he formulated the "M Plan", in terms of which ANC branches were broken down into underground cells.

By 1952 Mandela and Tambo had opened the first black legal firm in the country, and Mandela was both Transvaal president of the ANC and deputy national president.

A petition by the Transvaal Law Society to strike Mandela off the roll of attorneys was refused by the Supreme Court.

In the 'fifties, after being forced through constant bannings to resign officially from the ANC, Mandela analysed the Bantustan policy as a political swindle. He predicted mass removals, political persecutions and police terror.

For the second half of the 'fifties, he was one of the accused in the Treason Trial. With Duma Nokwe, he conducted the defence.

When the ANC was banned after the Sharpeville massacre in 1960, he was detained until 1961 when he went underground to lead a campaign for a new national convention.

Umkhonto we Sizwe (MK), the military wing of the ANC, was born the same year. Under his leadership it launched a campaign of sabotage against government and economic installations.

In 1962 Mandela left the country for military training in Algeria and to arrange training for other MK members.

On his return he was arrested for leaving the country illegally and for incitement to strike. He conducted his own defence. He was convicted and jailed for five years in November 1962. While serving his sentence, he was charged, in the Rivonia trial, with sabotage and sentenced to life imprisonment.

A decade before being imprisoned, Mandela had spoken out against the introduction of Bantu Education, recommending that community activists "make every home, every shack or rickety structure a centre of learning".

Robben Island, where he was imprisoned, became a centre for learning, and Mandela was a central figure in the organised political education classes.

In prison Mandela never compromised his political principles and was always a source of strength for the other prisoners.

During the 'seventies he refused the offer of a remission of sentence if he recognised Transkei and settled there.

In the 'eighties he again rejected PW Botha's offer of freedom if he renounced violence.

It is significant that shortly after his release on Sunday 11 February 1990, Mandela and his delegation agreed to the suspension of armed struggle.

Mandela has honorary degrees from more than 50 international universities and is chancellor of the University of the North.

He was inaugurated as the first democratically elected State President of South Africa on 10 May 1994 - June 1999

Nelson Mandela retired from Public life in June 1999. He currently resides in his birth place - Qunu, Transkei.

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