Nikolai Kapitonovich Nikolski (Николай Капитонович Никольский, sometimes transliterated as Nikolskii, born 16 November 1940)[1] is a Russian mathematician, specializing in real and complex analysis and functional analysis.
Nikolski received in 1966 his Candidate of Sciences degree (PhD) from the Leningrad State University under Viktor Khavin with thesis Invariant subspaces of certain compact operators (title translated from Russian).
He was an Invited Speaker with talk What problems do spectral theory and functional analysis solve for each other?
His doctoral students include Nikolai Makarov, Sergei Treil, and Alexander Volberg.
Nikolski was one of the Leningrad mathematicians who in 1984 verified the correctness of the proof of the Bieberbach conjecture by Louis de Branges.