Were Pavel Urysohn and Leonid Levin known for the same type of work?
Leonid Levin Leonid Anatolievich Levin ( ; Russian: Леони́д Анато́льевич Ле́вин ; Ukrainian: Леоні́д Анато́лійович Ле́він ; born November 2, 1948) is a Soviet-American computer scientist.
Leonid Pasternak Leonid Osipovich Pasternak (born "Yitzhok-Leib", or "Isaak Iosifovich, Pasternak"; Russian: Леони́д О́сипович Пастерна́к , 3 April 1862 N.S. – 31 May 1945) was a Russian post-impressionist painter. He was the father of the poet and novelist Boris Pasternak.