K. R. Parthasarathy (probabilist)

K. R. Parthasarathy
Parthasarathy in 1975
Born	Kalyanapuram Rangachari Parthasarathy (1936-06-25)25 June 1936 Madras, Madras Presidency, British India (now Chennai, Tamil Nadu, India)
Died	14 June 2023(2023-06-14) (aged 86) Delhi, India
Alma mater	Ramakrishna Mission Vivekananda College Indian Statistical Institute
Known for	Quantum stochastic calculus
Spouse	Shyama Parthasarathy
Children	2
Awards	Shanti Swarup Bhatnagar Award TWAS Prize
Scientific career
Fields	Mathematics
Institutions	Indian Statistical Institute
Doctoral advisor	C. R. Rao

Kalyanapuram Rangachari Parthasarathy (25 June 1936 – 14 June 2023) was an Indian statistician who was professor emeritus at the Indian Statistical Institute and a pioneer of quantum stochastic calculus. Parthasarathy was the recipient of the Shanti Swarup Bhatnagar Prize for Science and Technology in Mathematical Science in 1977 and the TWAS Prize in 1996.