Frederic Fitch

Frederic Brenton Fitch (1908 – September 18, 1987) was an American logician, a Sterling Professor at Yale University.[1]

Education

Fitch earned his Ph.D. from Yale in 1934 under the supervision of F. S. C. Northrop.[2]

Work

Fitch was the inventor of the Fitch-style calculus for arranging formal logical proofs as diagrams.[3] 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.[4]

Bibliography

References

  1. "Frederic B. Fitch", Obituaries, New York Times, September 19, 1987.
  2. Frederic Fitch at the Mathematics Genealogy Project
  3. Bimbo, Katalin (2014), Proof Theory: Sequent Calculi and Related Formalisms, Discrete Mathematics and Its Applications, CRC Press, p. 272, ISBN 9781466564688.
  4. Fitch's Paradox of Knowability in the Stanford Encyclopedia of Philosophy.
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