Esteva Massaguer, FrancescGispert Brasó, JoanGodo i Lacasa, Lluís2026-01-122025-07-090302-9743https://hdl.handle.net/2445/225278In this paper we study the definition and axiomatisation of non-falsity preserving and threshold preserving companions of several extensions of the Monoidal t-norm based fuzzy logic MTL. More in detail, we first extend some recent preliminary results on non-falsity preserving logics, and then we present a new study on threshold-preserving companions of the main three fuzzy logics, Łukasiewicz, Product and Gödel logics.12 p.application/pdfeng(c) Esteva Massaguer, Francesc, et al. 2025Lògica algebraicaLògica difusaAlgebraic logicFuzzy logicinfo:eu-repo/semantics/article7603242026-01-12info:eu-repo/semantics/embargoedAccess