Frederic Fitch
Frederic Fitch | |
|---|---|
| Born | September 9, 1908 |
| Died | September 18, 1987 (aged 79) |
| Known for | Fitch's paradox of knowability |
| Academic background | |
| Alma mater | Yale University |
| Academic work | |
| Discipline | Logic |
Frederic Brenton Fitch (September 9, 1908 – September 18, 1987) was an American logician, a Sterling Professor at Yale University.[1]
Education and career
[edit | edit source]At Yale, Fitch earned his B.A in 1931 and his Ph.D. from Yale in 1934 under the supervision of F. S. C. Northrop.[2] From 1934 to 1937 Fitch was a postdoc at the University of Virginia. In 1937 he returned to Yale, where he taught until his retirement in 1977.[3]
His doctoral students include Alan Ross Anderson, Ruth Barcan Marcus, and William W. Tait.
Work
[edit | edit source]Fitch was the inventor of the Fitch-style calculus for arranging formal logical proofs as diagrams.[4] In his 1963 published paper "A Logical Analysis of Some Value Concepts" he proves "Theorem 5" (originally by Alonzo Church), which later became famous in context of the knowability paradox.[5]
Fitch worked primarily in combinatory logic, authoring an undergraduate-level textbook on the subject (1974), but he also made significant contributions to intuitionism and modal logic. He was interested in the problem of the consistency, completeness, categoricity, and constructivity of logical theories, especially nonclassical logics, and contributed to the foundations of mathematics and to inductive probability. He dealt with the theory of references in "The Problem of the Morning Star and the Evening Star" (1949).[3]
He also contributed to the philosophy of how logic relates to language.[3]
Works
[edit | edit source]- 1952: Symbolic Logic, An Introduction, The Ronald Press Company[6]
- 1963: "A Logical Analysis of Some Value Concepts", Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). (This paper has over 400 citations.)
- 1974: Elements of Combinatory Logic, Yale University Press[7]
- 1975: (with Alan Ross Anderson, Ruth Barcan Marcus, and Richard Milton Martin): Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
See also
[edit | edit source]References
[edit | edit source]- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value)..
- ^ Frederic Fitch at the Mathematics Genealogy Project
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External links
[edit | edit source]- Bibliography of papers by Frederic Fitch on PhilPapers
- Frederic Brenton Fitch Papers. Manuscripts and Archives, Yale University Library.
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