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Basic fuzzy logic and BL-algebras

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Abstract

 The many-valued propositional logic BL (basic fuzzy logic) is investigated. It is known to be complete for tautologies over BL-algebras (particular residuated lattices). Each continuous t-norm on [0,1] determines a BL-algebra; such algebras are called t-algebras. Two additional axioms B1, B2 are found such that BL+(B1,B2) is complete for tautologies over t-algebras. It remains open whether B1, B2 are provable in BL.

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Hájek, P. Basic fuzzy logic and BL-algebras. Soft Computing 2, 124–128 (1998). https://doi.org/10.1007/s005000050043

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  • DOI: https://doi.org/10.1007/s005000050043

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