B.Sc. Hons. Mathematics, University of Delhi 1979.
M.Sc. Mathematics, Indian Institute of Technology Delhi 1981.
Ph.D., Tata Institute of Fundamental Research, Bombay, January 1991 (Supervisor M S Raghunathan, FRS).
Elected Fellow of the National Academy of Sciences, Allahabad, India;
National Co-ordinator in charge of the Mathematics Olympiad program in India;
Secretary, Ramanujan Mathematical Society
Member, Board of Studies of Homi Bhabha National Institute.
Member, Board of Studies, Christ University Bangalore.
Member, Recruitment Committee, IIIT Bangalore.
Algebraic groups over global and local fields, Combinatorial methods in group theory and number theory, Diophantine equations, Division algebras, Algebraic number theory, K-theory.
(i) Proceedings of Mathematical Sciences, Indian Academy of Sceiences
(iii) Mathematics Student
(iv) Mathematics Newsletter of the Ramanujan Mathematical Society
(v) Indian Journal of Pure and Applied Mathematics