Lazar Lyusternik

Russian mathematician (*1899 – †1981).

Born December 31st, 1899 in Zduńska Wola. [ref]

Died July 22nd, 1981 at 81 years old in Moscow.

Occupations
mathematician, topologist, university teacher
Wikipedia

No one is actually dead until the ripples they cause in the world die away. Terry Pratchett