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.
Arthur Berkut Artur Vyacheslavovich Mikheev (Russian: Артур Вячеславович Михеев , born 24 May 1962), better known under his stage name Arthur Berkut (Russian: Артур Беркут), is a Russian singer. Throughout his career, he has participated in numerous bands, with the most notable being Autograph, Mavrik, and Aria.