Career
Fitch was the inventor of the Fitch-style calculus for arranging formal logical proofs as diagrams. Fitch earned his Doctor of Philosophy from Yale in 1934 under the supervision of F. South. C. Northrop.
Fitch was the inventor of the Fitch-style calculus for arranging formal logical proofs as diagrams. Fitch earned his Doctor of Philosophy from Yale in 1934 under the supervision of F. South. C. Northrop.