Aleksei Parshin

Aleksei Nikolaevich Parshin, sometimes romanized as Alexey Nikolaevich Paršin, (; born 7 November 1942 in Sverdlovsk) is a Russian mathematician, specializing in arithmetic geometry.
Education and career.
Parshin graduated in 1964 from the Faculty of Mathematics and Mechanics of Moscow State University and then enrolled as a graduate student at the Steklov Institute of Mathematics, where he received his Kand. Nauk (Ph.D.) in 1968 under Igor Shafarevich. In 1983 he received his Russian doctorate of sciences (Doctor Nauk) from Moscow State University. He is now a professor at the Steklov Institute in Moscow, where he is the head of the Department of Algebra, and he is also a professor at Moscow State University.
Parshin proved in 1968 that the Mordell conjecture is a logical consequence of Shafarevich's finiteness conjecture concerning isomorphism classes of abelian varieties via what is known as "Parshin's trick", which gives an embedding of an algebraic curve into the Siegel modular variety. In 1983 Gerd Faltings proved Shafarevich's finiteness conjecture (and thereby the Mordell conjecture).
Shafarevich proved his conjecture for the case with genus "g" = 1. In 1968 Parshin proved a special case (for = the empty set) of the following theorem: If is a smooth complex curve and is a finite subset of then there exist only finitely many families (up to isomorphism) of smooth curves of fixed genus "g" ≥ 2 over . The general case (for non-empty ) of the preceding theorem was proved by Arakelov. At the same time, Parshin gave a new proof (without an application of the Shafarevich finiteness condition) of the Mordell conjecture in function fields (already proved by Yuri Manin in 1963 and by Hans Grauert in 1965). Parshin presented his results in his talk "Quelques conjectures de finitude en géométrie diophantienne"as an invited speaker at the ICM in 1970 in Nice.
Parshin's research deals with generalizations of class field theory in higher dimensions, with integrable systems, and with the history of mathematics. He was an editor for the Russian edition of the collected works of David Hilbert and was a co-editor, with V. I. Arnold, of selected works of Hermann Weyl.
Parshin is a corresponding member of the Russian Academy of Sciences. At the ICM in 2010 he was a Plenary Speaker with his talk titled "Representations of higher adelic groups and arithmetic".