Authors
Christian Urban, Gavin M. Bierman
Publication date
2001/1/1
Journal
Fundamenta Informaticae
Volume
45
Issue
1-2
Pages
123-155
Publisher
IOS Press
Description
In this paper we present a strongly normalising cut-elimination procedure for classical logic. This procedure adapts Gentzen's standard cut-reductions, but is less restrictive than previous strongly normalising cut-elimination procedures. In comparison, for example, with works by Dragalin and Danos et al., our procedure requires no special annotations on formulae and allows cut-rules to pass over other cut-rules. In order to adapt the notion of symmetric reducibility candidates for proving the strong normalisation property, we introduce a novel term assignment for sequent proofs of classical logic and formalise cut-reductions as term rewriting rules.
Total citations
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