Question: Are Ivan Fesenko and Boris Trakhtenbrot both mathematicians?
Sentence (from "Boris Trakhtenbrot"): Boris (Boaz) Avraamovich Trakhtenbrot (Russian: Борис Авраамович Трахтенброт ; 19 February 1921 – 19 September 2016), or Boaz (Boris) Trakhtenbrot (Hebrew: בועז טרכטנברוט‎ ‎ ) was an Israeli and Russian mathematician in mathematical logic, algorithms, theory of computation, and cybernetics.
Relevant evidence: Yes