Tributes were paid to mathematics genius Srinivasa Ramanujan on his 129th birth anniversary on December 22, 2016.
Prime Minister Manmohan Singh unveils a stamp during the 125th birth anniversarycelebrations of Ramanujan, in New Delhi on December 26, 2011.
In this December 5, 1981 photo, Mrs. Janakiammal, wife of Ramanujan, receives the first monthly pension granted by the Madras Port Trust (where he had worked) from Shipping Minister Veerendra Patil in Chennai.
Robert Kanigel, author of ''The Man Who Knew Infinity'' (1991), the acclaimed biography of Ramanujan, speaks at an event in Chennai on December 26, 2011.
A letter written by Ramanujan is put on display at the school where he studied in Kumbakonam.
A view of the ancestral house of Ramanujan in Kumbakonam.
Ramanujan's birthday is celebrated as National Mathematics Day.
A 'Magic Square' formed by the maths genius is on display at Sastra University in Thanjavur.
A letter written by G.H. Hardy, Ramanujan's mentor and a towering figure in analysis and number theory, to the latter.
Ramanujan's manuscripts at the Madras University.
The maths legend, who became a Fellow of the Royal Society and elected to Trinity College Fellowship in 1918, died of an illness on April 26, 1920.