Mark Krein

Mark Krein
Марк Крейн
The memorial plaque of Mark Krein, c. 2003
Born
Mark Grigorievich Krein

(1907-04-03)3 April 1907
Kiev, Kiev Governorate, Russian Empire
Died17 October 1989(1989-10-17) (aged 82)
Odessa, Ukrainian SSR, Soviet Union
CitizenshipSoviet Union
Alma materOdessa University
Known forFunctional analysis
Krein space
Krein's condition
Krein's extension theorem
Krein–Milman theorem
Krein–Rutman theorem
Krein–Smulian theorem
Akhiezer–Krein–Favard constant
Markov–Krein theorem
Tannaka–Krein duality
AwardsWolf Prize (1982)
Scientific career
FieldsOperator theory
mathematical physics
InstitutionsOdessa University
Odessa Civil Engineering Institute
Academic advisorsNikolai Chebotaryov
Doctoral studentsVadym Adamyan
Israel Gohberg
David Milman
Mark Naimark
Mikhail Samuilovich Livsic

Mark Grigorievich Krein (Russian: Марк Григо́рьевич Крейн; Ukrainian: Марко́ Григо́рович Крейн; 3 April 1907 – 17 October 1989) was a Soviet mathematician, one of the major figures of the Soviet school of functional analysis. He is known for works in operator theory (in close connection with concrete problems coming from mathematical physics), the problem of moments, classical analysis and representation theory.