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Conditional theories - MaRDI portal

Conditional theories (Q1092039)

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scientific article; zbMATH DE number 4012581
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Conditional theories
scientific article; zbMATH DE number 4012581

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    Conditional theories (English)
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    1986
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    A variant of free logic with equality, called conditional logic, is introduced. The point is that every function symbol F of the formal language is supplied with a certain formula which defines the existence condition of the function corresponding to F. Furthermore, to every formula \(\psi\) a finite set of terms ``essential'' for \(\psi\) is associated. Syntax and semantics of conditional theories are developed, in some extent sufficient for proving a completeness theorem (in Henkin style).
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    free logic with equality
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    conditional logic
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