CHRONOLOGY OF INDIAN MATHEMATICIANS WITH THEIR CONTRIBUTIONS Acknowledgement
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Indian mathematics emerged in the Indian subcontinentfrom 1200 BC until the end of the 18th century. In theclassical period of Indian mathematics (400 AD to 1200AD), important contributions were made by scholarslike Aryabhata, Brahmagupta, and Bhaskara II.The decimal number system in use today was firstrecorded in Indian mathematics. Indian
7. Aryabhata (475 A.D. -550 A.D.) is the first well knownIndian mathematician. Born in Kerala, he completed hisstudies at the university of Nalanda. In thesection Ganita (calculations) of his astronomical treatiseAryabhatiya (499 A.D.), he made the fundamental advancein finding the lengths of chords of circles, by using thehalf chord rather than the full chord method used byGreeks. He gave the value of as 3.1416, claiming, for thefirst time, that it was an approximation. (He gave it in theform that the approximate circumference of a circle ofdiameter 20000 is 62832.) He also gave methods forextracting square roots, summing arithmeticseries, solving indeterminate equations of the type ax -by= c, and also gave what later came to be known as the tableof Sines. He also wrote a text book for astronomicalcalculations, Aryabhatasiddhanta. Even today, this data isused in preparing Hindu calendars (Panchangs). Inrecognition to his contributions to astronomy andmathematics, Indias first satellite was named Aryabhatta.About-
8. Aryabhatta is the first writer on astronomy to whomthe Hindus do not allow the honour of a divineinspiration. Writers on mathematical sciencedistinctly state that he was the earliest uninspiredand a merely human writer on astronomy. This is anotice which sufficiently proves his being anhistorical character. He also ascribed to the epicycles, by which themotion of a planet is represented, a form varyingfrom the circle and nearly elliptic. His text specifies the earths diameter, 1050 yojanas;and the orbit or circumference of the earths wind[spiritus vector] 3393 yojanas; which, as the scholiastrightly argues, is no discrepancy.His contributions….
14. Ramanujans arrival at Cambridge was the beginning of a verysuccessful five-year collaboration with Hardy. In some ways the twomade an odd pair: Hardy was a great exponent of rigor inanalysis, while Ramanujans results were (as Hardy put it) "arrived atby a process of mingled argument, intuition, and induction, of whichhe was entirely unable to give any coherent account". Hardy did hisbest to fill in the gaps in Ramanujans education without discouraginghim. He was amazed by Ramanujans uncanny formal intuition inmanipulating infinite series, continued fractions, and the like: "I havenever met his equal, and can compare him onlywith Euleror Jacobi."One remarkable result of the Hardy-Ramanujancollaboration was a formula for the number p(n) of partitions of anumber n. A partition of a positive integer n is just an expressionfor n as a sum of positive integers, regardless of order. Thus p(4) = 5because 4 can be written as 1+1+1+1, 1+1+2, 2+2, 1+3, or 4. Besides his published work, Ramanujan left behind severalnotebooks, which have been the object of much study. The Englishmathematician G. N. Watson wrote a long series of papers about them.More recently the American mathematician Bruce C. Berndt has writtena multi-volume study of the notebooks. In 1997 The RamanujanJournal was launched to publish work "in areas of mathematicsinfluenced by Ramanujan".
17. Shakuntala Devi was born on 4th of November, 1939 inBengaluru in a well-known Brahmin priest family. Shedid card tricks with her father when she was only three.Shakuntala Devi received her early lessons inmathematics from her grandfather. By the age of 5,Shakuntala Devi became an expert in complex mentalarithmetic and was recognised as a child prodigy. Shedemonstrated her talents to a large assembly of studentsand professors at the University of Mysore a year later.And when she was 8 years old, she demonstrated hertalents at Annamalai University. Shakuntala Devi hasauthored a few books. She shares some of the methods ofmental calculations in her world famous book, Figuring:The Joy of Numbers. Puzzles to puzzle You, More Puzzlesto puzzle you, The Book of Numbers, Mathability:Awaken the Math Genius in Your Child, Astrology foryou, Perfect Murder, In the Wonderland of Numbers aresome of the popular books written by her. Her book, Inthe Wonderland of Numbers, talks about a girl Neha, andher fascination for numbers.About-