Question: What form of math does Grigori Perelman and Askold Khovanskii have in common?
Sentence (from "Grigori Perelman"): Grigori Yakovlevich Perelman (Russian: Григо́рий Я́ковлевич Перельма́н ; ] ; born 13 June 1966) is a Russian mathematician.
Relevant evidence: No