Results 11 to 20 of about 506,932 (281)

Löwenheim-Skolem theorems for non-classical first-order algebraizable logics [PDF]

open access: yesLogic Journal of IGPL, 2016
This article is a contribution to the model theory of non-classical first-order predicate logics. In a wide framework of firstorder systems based on algebraizable logics, we study several notions of homomorphisms between models and find suitable definitions of elementary homomorphism, elementary substructure and elementary equivalence.
Dellunde P.   +2 more
openaire   +6 more sources

Satisfiability vs. Finite Satisfiability in Elementary Modal Logics [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2012
We study elementary modal logics, i.e. modal logic considered over first-order definable classes of frames. The classical semantics of modal logic allows infinite structures, but often practical applications require to restrict our attention to finite ...
Jakub Michaliszyn   +2 more
doaj   +1 more source

Classical First-Order Logic

open access: yes, 2022
One is often said to be reasoning well when they are reasoning logically. Many attempts to say what logical reasoning is have been proposed, but one commonly proposed system is first-order classical logic. This Element will examine the basics of first-order classical logic and discuss some surrounding philosophical issues. The first half of the Element
Shapiro, Stewart, Kouri-Kissel, Teresa
openaire   +1 more source

An Arithmetically Complete Predicate Modal Logic

open access: yesBulletin of the Section of Logic, 2021
This paper investigates a first-order extension of GL called \(\textup{ML}^3\). We outline briefly the history that led to \(\textup{ML}^3\), its key properties and some of its toolbox: the \emph{conservation theorem}, its cut-free Gentzenisation, the ...
Yunge Hao, George Tourlakis
doaj   +1 more source

A comparative study of the position of ethics in the law of obligations in the legal system of Iran and France [PDF]

open access: yesاخلاق وحیانی, 2022
The relationship between ethics and law has long been a point of contention between jurists and philosophers. In general, there are two views, classical and modern; The first view implies that there is a fundamental difference between these two branches ...
Mostafa Harati
doaj   +1 more source

Duality Theory and Categorical Universal Logic: With Emphasis on Quantum Structures [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2014
Categorical Universal Logic is a theory of monad-relativised hyperdoctrines (or fibred universal algebras), which in particular encompasses categorical forms of both first-order and higher-order quantum logics as well as classical, intuitionistic, and ...
Yoshihiro Maruyama
doaj   +1 more source

Cut Elimination for Extended Sequent Calculi

open access: yesBulletin of the Section of Logic, 2023
We present a syntactical cut-elimination proof for an extended sequent calculus covering the classical modal logics in the \(\mathsf{K}\), \(\mathsf{D}\), \(\mathsf{T}\), \(\mathsf{K4}\), \(\mathsf{D4}\) and \(\mathsf{S4}\) spectrum.
Simone Martini   +2 more
doaj   +1 more source

On the Succinctness of Atoms of Dependency [PDF]

open access: yesLogical Methods in Computer Science, 2019
Propositional team logic is the propositional analog to first-order team logic. Non-classical atoms of dependence, independence, inclusion, exclusion and anonymity can be expressed in it, but for all atoms except dependence only exponential translations ...
Martin Lück, Miikka Vilander
doaj   +1 more source

On the system CL12 of computability logic [PDF]

open access: yesLogical Methods in Computer Science, 2015
Computability logic (see http://www.csc.villanova.edu/~japaridz/CL/) is a long-term project for redeveloping logic on the basis of a constructive game semantics, with games seen as abstract models of interactive computational problems.
Giorgi Japaridze
doaj   +1 more source

Embedding Non-Ground Logic Programs into Autoepistemic Logic for Knowledge Base Combination [PDF]

open access: yes, 2010
In the context of the Semantic Web, several approaches to the combination of ontologies, given in terms of theories of classical first-order logic and rule bases, have been proposed.
Axel Polleres   +4 more
core   +2 more sources

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