Rajagopalan Parthasarathy

{{Short description|Indian mathematician (born 1945)}}

{{Use dmy dates|date=July 2019}}

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|name = Rajagopalan Parthasarathy

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|birth_date = 6 October 1945

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|nationality = Indian

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|field = Representation theory of Lie groups and algebras in mathematics

|work_institutions = Tata Institute of Fundamental Research, Mumbai

|alma_mater = IIT Madras, University of Bombay

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|known_for = Hotta-Parthasarathy theorem, Blattner's conjecture

|prizes = Shanti Swarup Bhatnagar Prize for Science and Technology

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Rajagopalan Parthasarathy is an Indian mathematician who specialised in representation theory of Lie groups and algebras.

He was awarded in 1985 the Shanti Swarup Bhatnagar Prize for Science and Technology, the highest science award in India, in the mathematical sciences category.

Prof. Parthasarathy is an expert in representation theory of semisimple Lie groups. His initial work was on the realization of the so-called discrete series of representations of a semisimple Lie group in the space of Dirac Spinors. He made considerable progress in many central problems in representation theory. His work on the resolution of the Blattner's conjecture and the question of unitarisability of certain highest weight modules are significant contributions to this area in mathematics.{{cite book|author1=Sukumar Mallick |author2=Saguna Dewan |author3=S C Dhawan |title=Handbook of Shanti Swarup Bhatnagar Prize Winners (1958 - 1998)|year=1999|publisher=Human Resource Development Group, Council of Scientific & Industrial Research|location=New Delhi|pages=118|url=http://www.csirhrdg.res.in/ssb.pdf}}