Moses Schönfinkel
| Moses Ilyich Schönfinkel | |
|---|---|
1922
|
|
| Born |
September 4, 1889 Ekaterinoslav, Russian Empire (now Dnipropetrovsk, Ukraine) |
| Died | 1942 (aged 52–53) Moscow, Soviet Union |
| Citizenship | Russian |
| Nationality | Russian |
| Fields | Mathematics |
| Institutions | University of Göttingen |
| Known for |
Combinatory logic Technique for binding arguments |
Moses Ilyich Schönfinkel, also known as Moisei Isai'evich Sheinfinkel' (Russian: Моисей Исаевич Шейнфинкель; 4 September 1889–1942), was a Russian logician and mathematician, known for the invention of combinatory logic.
Schönfinkel attended the Novorossiysk University of Odessa, studying mathematics under Samuil Osipovich Shatunovskii (1859–1929), who worked in geometry and the foundations of mathematics. From 1914 to 1924, Schönfinkel was a member of David Hilbert's group at the University of Göttingen. On 7 December 1920 he delivered a talk to the group where he outlined the concept of combinatory logic. Heinrich Behmann, a member of Hilbert's group, later revised the text and published it in 1924. In 1929, Schönfinkel had one other paper published, on special cases of the decision problem (Entscheidungsproblem), that was prepared by Paul Bernays.
After he left Göttingen, Schönfinkel returned to Moscow. By 1927 he was reported to be mentally ill and in a sanatorium. His later life was spent in poverty, and he died in Moscow some time in 1942. His papers were burned by his neighbors for heating.
Schönfinkel developed a formal system that avoided the use of bound variables. His system was essentially equivalent to a combinatory logic based upon the combinators B, C, I, K, and S. Schönfinkel was able to show that the system could be reduced to just K and S and outlined a proof that a version of this system had the same power as predicate logic.
...
Wikipedia