Question: Leonid Kantorovich and Vladimir Arnold both acted as what in the Soviet Union?
Sentence (from "Leonid Kantorovich"): Leonid Vitaliyevich Kantorovich (Russian: Леони́д Вита́льевич Канторо́вич ; ] ) (19 January 19127 April 1986) was a Soviet mathematician and economist, known for his theory and development of techniques for the optimal allocation of resources.
Relevant evidence: Yes