S Ramanujan, An Icon of Mathematics

Harish Sharma
Born on December  22, 1887 in the town of Erode  in Tamil Nadu, Ramanujan   was largely  self -taught  and emerged   from  poverty   to become the   one of the  most  influential  mathematicians of 20th century.  He cultivated his love for Mathematics  single  in total isolation. He had  a prodigious memory,  and  at his school level  he   use to entertain his friends  by his  mathematical skills.This was the fore shadow  of what was to come.
At the age of  8, Ramanujan constructed  a magic square
22    12    18     87
40    65    31     3
71    15    28    25
6    47    62    24
This magic  square  showing his date of birth in the first row . He was friend of numbers .
At the age of 12  he solved the book of  SL Loney on plane trigonometry. That book was compilation of   6165 theorems without proofs.That book was  not remarkable book   but  Ramanujan made it remarkable .That book was largely  used by students of Carr who were preparing for the entrance examination of   in mathematics  at Cambridge University. In 1903 Ramanujan  entered the Government college in Kumbakonam. Unfortunately ,he failed in the examination since he neglected his non mathematical studies , Four  years  latter he entered another college  in Channi  and the same thing happened.  Finally   in 1912 he secured a job as a clerk in Madras  Port Trust  Office.There his duties were  light   and  so he could continue his work in mathematics . Manager of the office,   Mr SN Aiyar  was also a mathematician he supported  and encouraged him a lot  to move ahead in the field of mathematics . It was he who suggested him to  write   to GH Hardy, a famous   mathematician at Trinity college in England.
In his famous 1913 letter to Hardy, Ramanujan attached 120 theorems as a representative  sample  of his work.It took   over two  hours  for  Hardy  to analyse the letter to determine if it was written  by a crank or a genius. He consulted with is eminent colleague JE Littlewood   and finally  concluded that  it was written  by a genius.with the  approval of Prof Hardy, Ramanujan was invited to England .
Ramanujan sailed to   England   in March  1914 , Ramnujan  published more than 30 research papers  from 1914 to 1917. The most notable of these collaborations  involved the  the partition of the function.This function counts  the number of ways  a natural number can be  decomposed into smaller parts . Hardy and Ramanujan   developed a new method,  now called the circle method , to derive an asymptotic formula for this  function. This   method is now one of the central tools of analytic number theory and was  largely responsible  for major  advances  in the 20th  century
Another fundamental paper of Hardy and Ramanujan concerns what is now called the normal order method  this method analyses the behaviour of additive arithmetical functions .
In 1916 Ramnujan’s paper created a sensation by heralding the development of the theory of modular forms , his last letter to Hardy, written literally on his death bed in 1920 outlining a new theory of “Mock theta functions” is now creating  a greater sensation in the development of 21st century mathematics.
I hope that it is not hard for you to imagine what the example of Ramanujan could have provided for young men and women  of those times, beginning to look at the world  with increasingly different perceptions . The fact that Ramanujan ‘s early years   were spent in a  scientifically sterile atmosphere, that his life in India was not without hardships However ,the under circumstances that appeared to most Indians  as nothing short of miraculous, he had gone to Cambridge , supported by eminent mathematicians  and had returned to India  with every assurance that  he would be considered in time  as one of the most original   mathematician of the century . These facts are enough, more than enough, for aspiring young Indian students  to break  their  bonds of  intellectual confinement and perhaps soar the way that Ramanujan did.
(The author is teacher in Govt Girls HSS Sheesh Mahal Poonch)