Satisfiability in many-valued sentential logic is NP-complete
Theoretical Computer Science
A constructive proof of McNaughton's theorem in infinite-valued logic
Journal of Symbolic Logic
A geometric proof of the completeness of the Lukasiewicz calculus
Journal of Symbolic Logic
Łukasiewicz normal forms and toric desingularizations
Logic: from foundations to applications
Fuzzy control and conventional control: what is (and can be) the real contribution of fuzzy systems?
Fuzzy Sets and Systems - Special issue: fuzzy sets: where do we stand? Where do we go?
Regular Article: The Complexity of McNaughton Functions of One Variable
Advances in Applied Mathematics
Resolution and model building in the infinite-valued calculus of Łukasiewicz
Theoretical Computer Science
Regular Article: Tensor Products and the Loomis驴Sikorski Theorem for MV-Algebras
Advances in Applied Mathematics
Reasoning on imprecisely defined functions
Discovering the world with fuzzy logic
Computers and Intractability: A Guide to the Theory of NP-Completeness
Computers and Intractability: A Guide to the Theory of NP-Completeness
Finiteness in Infinite-Valued Σukasiewicz Logic
Journal of Logic, Language and Information
An Algebraic Approach to Propositional Fuzzy Logic
Journal of Logic, Language and Information
Implicit operations in MV-algebras and the connectives of Łukasiewicz logic
Algebraic and proof-theoretic aspects of non-classical logics
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The logic ∃Ł of continuous piecewise linear functions with rational coefficients has enough expressive power to formalize Weierstrass approximation theorem. Thus, up to any prescribed error, every continuous (control) function can be approximated by a formula of ∃Ł. As shown in this work, ∃Ł is just infinite-valued Lukasiewicz propositional logic with one quantified propositional variable. We evaluate the computational complexity of the decision problem for ∃Ł. Enough background material is provided for all readers wishing to acquire a deeper understanding of the rapidly growing literature on Lukasiewicz propositional logic and its applications.