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13 September 2012

2011, Srinivasa Ramanujan Rs 5.00 India MN H



                                  2011, Srinivasa Ramanujan Rs 5.00 India MNH

                                         Text: 2011, Srinivasa Ramanujan Rs 5.00 India MNH
                                 Condition: MNH
Country / PostIndia
Date of Issue26 December 2011
Primary themeScience & Technology (Mathematics) 
SubjectSrinivasa Ramanujan
Width39.0 mm
Height28.5 mm
Denomination5.00 INR
Number in set1
Layout/Formatsheet
Perforations13.5 by 13.5
Stamp issuing authorityMinistry of Communications Department of Posts
PrinterSecurity Printing Press Hyderabad
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SRINIVASA RAMANUJAN (1887-1920) BELONGS TO THE PANTHEON OF GREAT MATHEMATICIANS OF INDIA WHOSE LINEAGE STRETCHES BACK AT LEAST 25 CENTURIES, AND WHOSE CONTRIBUTIONS TO THE DEVELOPMENT OF MATHEMATICAL SCIENCES HAVE OFTEN BEEN PIONEERING AND REVOLUTIONARY. RAMANUJAN WAS BORN IN ERODE IN TAMIL NADU, ON 22-12-1897. LATER HIS FAMILY MOVED TO KUMBAKONAM IN CHENNAI  HE WAS UNEMPLOYED FOR A LONG TIME AND BACK OF SUFFICIENT MEANS OF LIVELIHOOD HAUNTED HIM IN HIS EARLY YOUTH. AFTER SOME STRUGGLE HE OBTAINED A CLERICAL POST WITH THE MADRAS PORT TRUST AT CHENNAI. MEANWHILE, RAMANUJAN’S MATHEMATICAL WORK CONTINUED VIGOROUSLY. HE ALSO BEGAN TO POSE AND SOLVE PROBLEMS IN THE JOURNAL OF THE INDIAN MATHEMATICAL SOCIETY. RAMANUJAN HAD AN INSTINCTIVE KNOWLEDGE OF MATHEMATICS, MOST OF WHICH HE HAD WORKED OUT BY HIMSELF. HE HAD ONLY THE VAGUEST IDEA, HOWEVER OF WHAT CONSTITUTES A MATHEMATICAL PROOF. IN 1918 HE BECAME THE FIRST INDIAN TO BE ELECTED TO THE ROYAL SOCIETY OF LONDON. HE WAS ALSO ELECTED A FELLOW OF TRINITY COLLEGE CAMBRIDGE  THE SAME YEAR. INDIA POST PAYS HOMAGE TO THIS MATHEMATICAL GENIUS BY ISSUING A COMMEMORATIVE POSTAGE STAMP.

Srinivasa Ramanujan was a mathematician par excellence. He is widely believed to be the greatest mathematician of the 20th Century. Srinivasa Ramanujan made significant contribution to the analytical theory of numbers and worked on elliptic functions, continued fractions, and infinite series.

Srinivasa Aiyangar Ramanujan was born on December 22, 1887 in Erode, Tamil Nadu. His father worked in Kumbakonam as a clerk in a cloth merchant’s shop. At the of five Ramanujan went to primary school in Kumbakonam. In 1898 at age 10, he entered the Town High School in Kumbakonam. At the age of eleven he was lent books on advanced trigonometry written by S. L. Loney by two lodgers at his home who studied at the Government college. He mastered them by the age of thirteen. Ramanujan was a bright student, winning academic prizes in high school.

At age of 16 his life took a decisive turn after he obtained a book titled” A Synopsis of Elementary Results in Pure and Applied Mathematics”. The book was simply a compilation of thousands of mathematical results, most set down with little or no indication of proof.

Date Of Issue:-23.12.2011.


Born at ErodeMadras Presidency (now Tamil Nadu) in a Tamil Brahmin family of Thenkalai Iyengar sect[2][3][4] Ramanujan's introduction to formal mathematics began at age 10. He demonstrated a natural ability, and was given books on advanced trigonometry written by S. L. Loney that he mastered by the age of 12; he even discovered theorems of his own, and re-discovered Euler's identity independently.[5] He demonstrated unusual mathematical skills at school, winning accolades and awards. By 17, Ramanujan had conducted his own mathematical research on Bernoulli numbers and the Euler–Mascheroni constant.Srinivasa Ramanujan FRS (About this sound pronunciation ) (Tamil: ஸ்ரீனிவாஸ ராமானுஜன்; 22 December 1887 – 26 April 1920) was an Indian mathematician and autodidact who, with almost no formal training in pure mathematics, made extraordinary contributions tomathematical analysis, number theory, infinite series, and continued fractions. Living in India with no access to the larger mathematical community, which was centred in Europe at the time, Ramanujan developed his own mathematical research in isolation. As a result, he sometimes rediscovered known theorems in addition to producing new work. Ramanujan was said to be a natural genius by the English mathematician G. H. Hardy, in the same league as mathematicians such as Euler and Gauss.[1] He died at the age of 32.
Ramanujan received a scholarship to study at Government College in Kumbakonam, which was later rescinded when he failed his non-mathematical coursework. He joined another college to pursue independent mathematical research, working as a clerk in the Accountant-General's office at the Madras Port Trust Office to support himself.[6] In 1912–1913, he sent samples of his theorems to three academics at the University of CambridgeG. H. Hardy, recognizing the brilliance of his work, invited Ramanujan to visit and work with him at Cambridge. He became a Fellow of the Royal Society and a Fellow of Trinity College, Cambridge. Ramanujan died of illness, malnutrition, and possibly liver infection in 1920 at the age of 32.
During his short lifetime, Ramanujan independently compiled nearly 3900 results (mostly identities and equations).[7] Nearly all his claims have now been proven correct, although a small number of these results were actually false and some were already known.[8]He stated results that were both original and highly unconventional, such as the Ramanujan prime and the Ramanujan theta function, and these have inspired a vast amount of further research.[9] However, the mathematical mainstream has been rather slow in absorbing some of his major discoveries. The Ramanujan Journal, an international publication, was launched to publish work in all areas of mathematics influenced by his work.[10]
In December 2011, in recognition of his contribution to mathematics, the Government of India declared that Ramanujan's birthday (22 December) should be celebrated every year as National Mathematics Day, and also declared 2012 the National Mathematics Year.

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