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## Banach Center Publications

1999 | 46 | 1 | 179-225
Tytuł artykułu

### Strong normalization proofs for cut elimination in Gentzen's sequent calculi

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EN
Abstrakty
EN
We define an equivalent variant $LK_{sp}$ of the Gentzen sequent calculus $LK$. In $LK_{sp}$ weakenings or contractions can be performed in parallel. This modification allows us to interpret a symmetrical system of mix elimination rules $𝓔_{LK_{sp}}$ by a finite rewriting system; the termination of this rewriting system can be machine checked. We give also a self-contained strong normalization proof by structural induction. We give another strong normalization proof by a strictly monotone subrecursive interpretation; this interpretation gives subrecursive bounds for the length of derivations. We give a strong normalization proof by applying orthogonal term rewriting results for a confluent restriction of the mix elimination system $𝓔_{LK_{sp}}$.
Słowa kluczowe
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Tom
Numer
Strony
179-225
Opis fizyczny
Daty
wydano
1999
Twórcy
autor
• LLAIC1, Université D'Auvergne, BP 86, 63172 Aubière Cedex, France
Bibliografia
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