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Tarski Semigroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1977
A Tarski semigroup is an algebraic system which mirrors a fragment of the additive theory of cardinal numbers. Here we show that any two such systems have the same universal theory. We also give a simple arithmetical necessary and sufficient condition for a universal sentence to hold in a Tarski semigroup.
openaire   +2 more sources

Note sur Popper lecteur de Tarski

open access: yesPhilosophia Scientiæ, 2007
1. Introduction. 2. Is Tarski’s theory of truth, as Popper claims after Tarski himself, a rehabilitation of the traditional view of truth as correspondence to facts? — Yes, but not for the reasons he gives. 3.
Philippe de Rouilhan
doaj   +1 more source

Gödel, Tarski and the Lure of Natural Language

open access: yes, 2020
Is mathematics 'entangled' with its various formalisations? Or are the central concepts of mathematics largely insensitive to formalisation, or 'formalism free'? What is the semantic point of view and how is it implemented in foundational practice?
J. Kennedy
semanticscholar   +1 more source

From Tarski to Gödel - or how to derive the second incompleteness theorem from the undefinability of truth without self-reference [PDF]

open access: yesJournal of Logic and Computation, 2018
In this paper, we provide a fairly general self-reference-free proof of the second incompleteness theorem from Tarski’s theorem on the undefinability of truth.
A. Visser
semanticscholar   +1 more source

A continuous movement version of the Banach—Tarski paradox: A solution to de Groot's Problem [PDF]

open access: yes, 2005
In 1924 Banach and Tarski demonstrated the existence of a paradoxical decomposition of the 3-ball B, i.e., a piecewise isometry from B onto two copies of B.
Wilson, Trevor M.
core   +1 more source

Sahlqvist via Translation [PDF]

open access: yesLogical Methods in Computer Science, 2019
In recent years, unified correspondence has been developed as a generalized Sahlqvist theory which applies uniformly to all signatures of normal and regular (distributive) lattice expansions.
Willem Conradie   +2 more
doaj   +1 more source

Truth and Theories of Truth [PDF]

open access: yes, 2021
The concept of truth and competing philosophical theories on what truth amounts to have an important place in contemporary philosophy. The aim of this chapter is to give a synopsis of different theories of truth and the particular philosophical issues ...
Raatikainen, Panu
core  

On Implicative and Positive Implicative GE Algebras

open access: yesBulletin of the Section of Logic, 2023
GE algebras (generalized exchange algebras), transitive GE algebras (tGE algebras, for short) and aGE algebras (that is, GE algebras verifying the antisymmetry) are a generalization of Hilbert algebras. Here some properties and characterizations of these
Andrzej Walendziak
doaj   +1 more source

Invariant means on Boolean inverse monoids [PDF]

open access: yes, 2015
The classical theory of invariant means, which plays an important role in the theory of paradoxical decompositions, is based upon what are usually termed `pseudogroups'. Such pseudogroups are in fact concrete examples of the Boolean inverse monoids which
Kudryavtseva, Ganna   +3 more
core   +2 more sources

Carnap's Contribution to Tarski's Truth.

open access: yesJournal for the History of Analytical Philosophy, 2015
In his seminal work “The Concept of Truth in Formalized Languages” (1933), Alfred Tarski showed how to construct a formally correct and materially adequate definition of true sentence for certain formalized languages. These results have, eventually, been
Monika Gruber
doaj   +1 more source

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