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Towards a pseudoequational proof theory

Preprint

<p>A new scheme for proving pseudoidentities from a given set Σ of pseudoidentities, which is clearly sound, is also shown to be complete in many instances, such as when Σ defines a locally finite variety, a pseudovariety of groups, more generally, of completely simple semigroups, or of commutative monoids. Many further examples when the scheme is complete are given when Σ defines a pseudovariety V which is σ-reducible for the equation x=y, provided Σ is enough to prove a basis of identities for the variety of σ-algebras generated by V. This gives ample evidence in support of the conjecture that the proof scheme is complete in general.</p>

Ond\v ima

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Year of publication: 2017

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Preprint

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