Alexander Sergeyevich Esenin-Volpin was a Russian-American poet and mathematician known for his foundational role in ultrafinitism. Esenin-Volpin was a prominent Soviet dissident and a leader of the Soviet human rights movement during the 1960s.
- Occupation
- mathematician, poet, writer, human rights defender
- Citizenship
- United States, Soviet Union
- Born
- May 12, 1924
- Died
- March 16, 2016
