Russian mathematician (1894-1919).
Born November 15th, 1894 in Krasavka, Balachov.
Died December 21st, 1919 at 25 years old in Krasavka, Balachov (typhus). [ref]
It is the secret of the world that all things subsist and do not die, but retire a little from sight and afterwards return again. Ralph Waldo Emerson