Boris Trakhtenbrot

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Boris (Boaz) Avraamovich Trakhtenbrot (Russian: Борис Авраамович Трахтенброт; born 19 February 1921 in Brichevo, northern Bessarabia)[1][2] or Boaz (Boris) Trakhtenbrot (Hebrew: בועז טרכטנברוט‎) is an Israeli and Russian mathematician in mathematical logic, algorithms, theory of computation and cybernetics. He worked at Akademgorodok, Novosibirsk during the 1960s and 1970s.[3] Currently he is a professor in the faculty of Exact sciences of Tel Aviv University.

In 1964 Trakhtenbrot discovered and proved a fundamental result in theoretical computer science called the Gap theorem.[4] He also discovered and proved what is now called Trakhtenbrot's theorem[5] which is a theorem in logic, model theory, and computability theory.


  1. ^ "Russian Jewish Encyclopedia > Surnames starting with the letter T". 
  2. ^ "Academician Andrei Ershov's archive > Documents > Boris A. Trakhtenbrot". 
  3. ^ "History of Computing in Russia > Authors > Boris Avraamovich Trahtenbrot" (in Russian). 
  4. ^ Boris Trakhtenbrot (1964). "Turing computations with logarithmic delay". Algebra and Logic (in Russian) 3 (4): 33–48. 
  5. ^ Boris Trakhtenbrot (1950). "The Impossibility of an Algorithm for the Decidability Problem on Finite Classes". Proceedings of the USSR Academy of Sciences (in Russian) 70 (4): 569–572. 

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