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Inductive proof search modulo

Identifieur interne : 003942 ( Main/Exploration ); précédent : 003941; suivant : 003943

Inductive proof search modulo

Auteurs : Fabrice Nahon [France] ; Claude Kirchner [France] ; Hélène Kirchner [France] ; Paul Brauner [France]

Source :

RBID : ISTEX:5A358A18D109FE88ED19F481F5F7FD35D30429DB

English descriptors

Abstract

Abstract: We present an original narrowing-based proof search method for inductive theorems in equational rewrite theories given by a rewrite system $\mathcal{R}$ and a set E of equalities. It has the specificity to be grounded on deduction modulo and to rely on narrowing to provide both induction variables and instantiation schemas. Whenever the equational rewrite system $(\mathcal{R},E)$ has good properties of termination, sufficient completeness, and when E is constructor and variable preserving, narrowing at defined-innermost positions leads to consider only unifiers which are constructor substitutions. This is especially interesting for associative and associative-commutative theories for which the general proof search system is refined. The method is shown to be sound and refutationally correct and complete. A major feature of our approach is to provide a constructive proof in deduction modulo for each successful instance of the proof search procedure.

Url:
DOI: 10.1007/s10472-009-9154-5


Affiliations:


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