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Issue No.08 - August (1976 vol.25)
pp: 801-807
P.B. Andrews , Carnegie-Mellon University
ABSTRACT
Occurrences of literals in the initial clauses of a refutation by resolution (with each clause-occurrence used only once) are mated iff their descendants are resolved with each other. This leads to an abstract notion of a mating as a relation between: occurrences of literals in a set of clause-occurrences. The existence of many refutations with the same mating leads to wasteful redundancy in the search for a refutation, so it is natural to focus on the essential problem of finding appropriate matings.
INDEX TERMS
Automatic theorem proving, clause-occurrence, cycle, first-order logic, mating, merge, refutation, resolution, unsatisfiability.
CITATION
P.B. Andrews, "Refutations by Matings", IEEE Transactions on Computers, vol.25, no. 8, pp. 801-807, August 1976, doi:10.1109/TC.1976.1674698
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