Publication
Studia Logica
Paper

A note on the logic of signed equations

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Abstract

A signed ∑-equation is an expression of the form t ≈ t′ or t ≉t′, where t and t′ are ∑-terms (for some ranked set ∑). We characterize those classes of ∑-algebras which are models of a set of signed ∑-equations. Further we consider the problem of finding a complete deductive system analogous to equational logic for the logical consequence operation restricted to signed equations. © 1982 Polish Academy of Sciences.

Date

01 Mar 1982

Publication

Studia Logica

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