{"id":"ramanujan","domain":"indian-mathematics","type":"Person","title":"Srinivasa Ramanujan","slug":"ramanujan","url":"/mathematics/indian-mathematics/ramanujan/","born":"22 December 1887","born_place":"Erode, Tamil Nadu, India","died":"26 April 1920","died_place":"Kumbakonam, India","summary":"Self-taught genius producing thousands of results in number theory, infinite series, modular forms. Collaborated with G.H. Hardy at Cambridge. Died at 32.","key_contributions":["Hardy-Ramanujan partition function formula","Ramanujan tau function and Ramanujan conjecture (proved by Deligne 1974)","Rapidly-converging infinite series for π","Mock theta functions (explained by Zwegers 2002)","Taxicab number 1729"],"added_to_codex":"2026-05-27","last_verified":"2026-05-27","sources":[{"tier":1,"citation":"Berndt, B.C. (1985–1998). Ramanujan's Notebooks. Parts I-V. Springer."},{"tier":1,"citation":"Hardy, G.H. (1940). Ramanujan: Twelve Lectures. Cambridge University Press."},{"tier":2,"citation":"Kanigel, R. (1991). The Man Who Knew Infinity. Scribner."},{"tier":2,"citation":"Andrews, G.E. and Berndt, B.C. (2005-2018). Ramanujan's Lost Notebook. Parts I-V. Springer."}],"relationships":[{"type":"part_of_tradition","target":"indian-mathematics-overview","label":"Indian Mathematics"},{"type":"uses","target":"prime-number","label":"Prime Number — partition/tau functions"},{"type":"key_collaborator","target":null,"label":"G.H. Hardy"}],"entry_status":"live","reading_levels_available":["curious","exploring","deep_dive"],"completeness":1.0,"codex_version":"1.6"}