Srinivasa Ramanujan was a famous Indian mathematician born in 1887 who made significant contributions to mathematical analysis and infinite series. Harish-Chandra was an Indian-American mathematician born in 1923 known for his fundamental work in representation theory and analysis on semisimple Lie groups. C.R. Rao is an Indian-born American mathematician and statistician currently working as a professor emeritus who has made advances in statistics.