Mark Krein

Soviet mathematician (1907-1989).

Born April 3rd, 1907 in Kyiv. [ref]

Died October 17th, 1989 at 82 years old in Odesa. [ref]

Occupations
mathematician, university teacher
Wikipedia

You needn’t die happy when your time comes, but you must die satisfied, for you have lived your life from the beginning to the end. Stephen King