Were both Alexander Kronrod and Leonty Magnitsky mathematicians?
Leonty Magnitsky Leonty Filippovich Magnitsky (Russian: Леонтий Филиппович Магницкий ), born Telyatin (Russian: Телятин ), (June 9, 1669, Ostashkov – October 19, 1739, Moscow) was a Russian mathematician and educator.
Alexander Vertinsky Alexander Nikolayevich Vertinsky (Russian: Алекса́ндр Никола́евич Верти́нский , 21 March 1889 in Kiev — 21 May 1957 in Leningrad, Polish: "Aleksander Wertyński" ) was a Russian and Soviet artist, poet, singer, composer, cabaret artist and actor who exerted seminal influence on the Russian tradition of artistic singing.