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logical constant

**SEMANTICS: **logical constants are those expressions within a logical system which determine the class of valid arguments of that system. The logical constants of **propositional logic** are the truth-functional **connectives**. The logical
constants of **predicate logic** add to this set the **quantifiers**. By adding more logical constants to this set (like the identity sign '=', or tense operators) more complicated logical systems can be studied, allowing a larger class of valid arguments.

LIT. | Gamut, L.T.F. (1991) |