Andrey Aleksandrovich Gonchar, (Андрей Александрович Гончар, 21 November 1931, Leningrad – 10 October 2012, Moscow) was a Soviet and Russian mathematician, specializing in analysis.
[1] At the Moscow State University Gonchar graduated in 1954 and received in 1967 his Russian candidate degree (Ph.D.) under Sergey Mergelyan,[2] He received his Russian doctorate (higher doctoral degree) in 1964 from the Steklov Institute.
Gonchar was a professor at the Steklov Institute and the Moscow State University.
From 1972 to 2002 he was a member of the complex analysis department of the Steklov Institute.
Gonchar's research focused on Padé approximants (specifically the relation between the convergence of the Padé approximants and the analytic properties of the function to be approximated) and asymptotic properties of orthogonal polynomials (investigated by means of potential theory).