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Handbook of Automated Reasoning by Andrei Voronkov, Alan J.A. Robinson

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The example above suggests the following generalization of P V D si178_e :

4.10. Definition

A set of clauses S belongs to P V D τ si179_e if there exists a sign renaming γ such that γ(S) belongs to P V D si180_e .

The idea behind P V D si181_e is that the positive parts are always “smaller” than the negative ones. As hyperresolution produces positive ...

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