Boris Moiseyevich Schein (22 June 1938 – 4 October 2023) was a Russian-American mathematician, an expert in semigroups, and a Distinguished Professor in the Department of Mathematical Sciences at the University of Arkansas.
Schein did his undergraduate studies in Mechanics-Mathematics at Saratov State, and chose to specialize in geometry, Wagner's subject.
He continued working as a graduate student with Wagner, and in 1962 defended a candidacy dissertation on semigroups of transformations at the Herzen State Pedagogical University of Russia in Saint Petersburg.
He accepted a faculty position at Saratov in 1963, and defended his Doctor of Sciences thesis in 1966, again at Herzen State Pedagogical University.
[1] In 1979, Schein was able to travel to Austria with his wife and daughter, and immediately he obtained a temporary visiting position at Tulane University in New Orleans.