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An Axiomatisation of the Conditionals of Post's Many Valued Logics

✍ Scribed by Stan J. Surma


Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
180 KB
Volume
41
Category
Article
ISSN
0044-3050

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✦ Synopsis


The paper provides a method for a uniform complete Hilbert-style axiomatisation of Post's (m, u)-conditionals and Post's negation, where rn is the number of truth values and u is the number of designated truth values (cf. [5]). The main feature of the technique which we employ in this proof generalises the well-known Kalmir Lemma which was used by its author in his completeness argument for the ordinary, twc-valued logic (cf. [2]).


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✍ Joan Gispert i BrasΓ³; Daniele Mundici; Antoni Torrens Torrell πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 140 KB

Up to categorical equivalence, abelian lattice-ordered groups with strong unit coincide with Chang's MV-algebrasᎏthe Lindenbaum algebras of the infinite-valued Łukasiewicz calculus. While the property of being a strong unit is not definable even in first-order logic, MV-algebras form an equational c