We prove a folklore theorem, that two derivations in a cut-free sequent calculus for intuitionistic propositional logic (based on Kleene's G3) are inter-permutable (using a set of basic "permutation reduction rules" derived from Kleene's work in 1952) iff they determine the same natural deduction. T
Correctness proof of an in-place permutation
โ Scribed by A. J. W. Duijvestijn
- Publisher
- Springer Netherlands
- Year
- 1972
- Tongue
- English
- Weight
- 278 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0006-3835
No coin nor oath required. For personal study only.
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