Semyon Aranovich Gershgorin and Vladimir Berkovich, have which occupation?
Semyon Aranovich Gershgorin Semyon Aronovich Gershgorin (August 24, 1901 – May 30, 1933) was a Soviet (born in Pruzhany, Belarus, Russian Empire) mathematician. He began as a student at the Petrograd Technological Institute in 1923, became a Professor in 1930, and was given an appointment at the Leningrad Mechanical Engineering Institute in the same year. His contributions include the Gershgorin circle theorem.
Rolan Bykov Rolan Antonovich Bykov (Russian: Рола́н Анто́нович Бы́ков ; October 12, 1929 – October 6, 1998) was a Soviet and Russian actor, theatre and film director, screenwriter, educator at High Courses for Scriptwriters and Film Directors, poet and song writer, as well as a politician and a banker. He was awarded People's Artist of the USSR in 1990.