The 2012 Indian stamp featured Srinivasa Ramanujan. The Indian government declared 22 December to be National Mathematics Day. It was introduced by Prime Minister Manmohan Singh on 26 December 2011 at Madras University, to mark the 125th birth anniversary of the Indian mathematician Srinivasa Ramanujan. On this occasion Prime minister Manmohan Singh also announced that 2012 would be celebrated as the National Mathematics Year.
Since then, India's National Mathematics Day is celebrated on 22 December every year with numerous educational events held at schools and universities throughout the country. In 2017, the day's significance was enhanced by the opening of the Ramanujan Math Park in Kuppam, in Chittoor, Andhra Pradesh. National Mathematics Day is celebrated in all schools and universities throughout the country.
- "PM's speech at the 125th Birth Anniversary Celebrations of ramanujan at Chennai". Prime Minister's Office, Government of India. Archived from the original on 29 July 2012. Retrieved 24 April 2012.
- C Jaishankar (27 December 2011). "Ramanujan's birthday will be National Mathematics Day". The Hindu. Retrieved 24 April 2012.
- "Math park set up government school to innovate teaching techniques" by Neel Kamal, [[The Times of 97 India]], October 24, 2017