Mark Grigoryevich Krein

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Mark Grigorievich Krein (3 April 1907 – 17 October 1989) was a Ukrainian mathematician who faced strong anti-Semitism in his homeland, one of the major figures of the Soviet school of mathematics. He is known for his development of functional analysis methods, particularly in operator theory, in close connection with concrete problems coming from mathematical physics, in particular differential equations and normal modes.

He was born in Kiev, leaving home at age 17 to go to Odessa. He had a difficult academic career, not completing his first degree and constantly being troubled by anti-Semitic discrimination. Despite that he left a large legacy of work, much of it having classical status, for example in the moment problem. He was awarded the Wolf Prize in Mathematics in 1982 (jointly with Hassler Whitney). David Milman, Mark Naimark, Izrail Glazman and other known mathematicians were his students.

He died in Odessa.

See also:

• Tannaka-Krein duality
• Krein-Milman theorem in functional analysis
• Krein space
• Krein's condition for the indeterminacy of the problem of moments

[edit] External link

• O'Connor, John J., and Edmund F. Robertson. "Mark Grigoryevich Krein". MacTutor History of Mathematics archive.
• Mark Grigoryevich Krein at the Mathematics Genealogy Project