RT Journal Article T1 A completeness theorem for a functionally complete Łukasiewicz logic A1 Aranda Utrero, Víctor AB Radzki has recently claimed the incompleteness of the axioms given by Słupecki for the functionally complete Ł3: some of its tautologies are not provable. In this paper, we provide a new axiom system for this logic (choosing a variant with two propositional constants and the Łukasiewicz implication as primitive symbols) and prove a Completeness Theorem. PB Uniwersytet Mikołaja Kopernika SN 1425-3305 YR 2025 FD 2025 LK https://hdl.handle.net/20.500.14352/123833 UL https://hdl.handle.net/20.500.14352/123833 LA eng NO Aranda, V. (2025) “A Completeness Theorem for a Functionally Complete Łukasiewicz Logic”, Logic and Logical Philosophy, pp. 1–12. doi: 10.12775/LLP.2025.014. NO Comunidad de Madrid NO Ministerio de Ciencia e Innovación (España) DS Docta Complutense RD 21 mar 2026