Results for 'Tadao Takano'

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  1. Hypersequents and the proof theory of intuitionistic fuzzy logic.Matthias Baaz & Richard Zach - 2000 - In Clote Peter G. & Schwichtenberg Helmut (eds.), Computer Science Logic. 14th International Workshop, CSL 2000. Springer. pp. 187– 201.
    Takeuti and Titani have introduced and investigated a logic they called intuitionistic fuzzy logic. This logic is characterized as the first-order Gödel logic based on the truth value set [0,1]. The logic is known to be axiomatizable, but no deduction system amenable to proof-theoretic, and hence, computational treatment, has been known. Such a system is presented here, based on previous work on hypersequent calculi for propositional Gödel logics by Avron. It is shown that the system is sound and complete, and (...)
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  2. Interpolation in 16-Valued Trilattice Logics.Reinhard Muskens & Stefan Wintein - 2018 - Studia Logica 106 (2):345-370.
    In a recent paper we have defined an analytic tableau calculus PL_16 for a functionally complete extension of Shramko and Wansing's logic based on the trilattice SIXTEEN_3. This calculus makes it possible to define syntactic entailment relations that capture central semantic relations of the logic---such as the relations |=_t, |=_f, and |=_i that each correspond to a lattice order in SIXTEEN_3; and |=, the intersection of |=_t and |=_f,. -/- It turns out that our method of characterising these semantic relations---as (...)
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