Automatic Proofs and Counterexamples for Some Ortholattice Identities

Abstract

This note answers questions on whether three identities known to hold for orthomodular lattices are true also for ortholattices. One identity is shown to fail by MACE, a program that searches for counterexamples, an the other two are proved to hold by EQP, an equational theorem prover. The problems, from work in quantum logic, were given to us by Norman… (More)
DOI: 10.1016/S0020-0190(98)00015-5

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