Abstract:We present a general framework for "good CNF-representations" of boolean constraints, to be used for translating decision problems into SAT problems (i.e., deciding satisfiability for conjunctive normal forms). We apply it to the representation of systems of XOR-constraints ("exclusive-or"), also known as systems of linear equations over the two-element field, or systems of parity constraints, or as systems of equivalences (XOR is the negation of an equivalence).The general framework defines the notion of "rep… Show more
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