Three complexity problems in quantified fuzzy logic (Q5951916)
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scientific article; zbMATH DE number 1687432
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Three complexity problems in quantified fuzzy logic |
scientific article; zbMATH DE number 1687432 |
Statements
Three complexity problems in quantified fuzzy logic (English)
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13 May 2002
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It is proved that the set of standard tautologies of predicate Product Logic and of predicate Basic Logic, as well as the set of standard-satisfiable formulas of predicate Basic Logic are not arithmetical. Also, solutions of some problems proposed by \textit{P. Hájek} [``Fuzzy logic and arithmetical hierarchy. III'', Stud. Log. 68, 129-142 (2001; Zbl 0988.03042] are given.
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predicate logic
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many valued logics
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undecidability
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