Results 1 to 10 of about 5,094 (281)

Logic-Sensitivity of Aristotelian Diagrams in Non-Normal Modal Logics [PDF]

open access: yesAxioms, 2021
Aristotelian diagrams, such as the square of opposition, are well-known in the context of normal modal logics (i.e., systems of modal logic which can be given a relational semantics in terms of Kripke models). This paper studies Aristotelian diagrams for
Lorenz Demey
doaj   +6 more sources

Explicit Non-normal Modal Logic [PDF]

open access: yesLecture Notes in Computer Science, 2021
Abstract Faroldi argues that deontic modals are hyperintensional and thus traditional modal logic cannot provide an appropriate formalization of deontic situations. To overcome this issue, we introduce novel justification logics as hyperintensional analogues to non-normal modal logics. We establish soundness and completeness with respect
Thomas Studer, Studer Thomas
exaly   +4 more sources

A modal logic internalizing normal proofs

open access: yesInformation and Computation, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hyeonseung Im
exaly   +6 more sources

Distribution-Free Normal Modal Logics

open access: yesLogics
This article initiates the semantic study of distribution-free normal modal logic systems, laying the semantic foundations and anticipating further research in the area. The article explores roughly the same area, though taking a different approach, as a
Chrysafis Hartonas
doaj   +4 more sources

Disjunctive bases: normal forms and model theory for modal logics [PDF]

open access: yesLogical Methods in Computer Science, 2022
We present the concept of a disjunctive basis as a generic framework for normal forms in modal logic based on coalgebra. Disjunctive bases were defined in previous work on completeness for modal fixpoint logics, where they played a central role in the ...
Sebastian Enqvist, Yde Venema
doaj   +1 more source

Note on the Intuitionistic Logic of False Belief

open access: yesBulletin of the Section of Logic, 2022
In this paper we analyse logic of false belief in the intuitionistic setting. This logic, studied in its classical version by Steinsvold, Fan, Gilbert and Venturi, describes the following situation: a formula $\varphi$ is not satisfied in a given world ...
Tomasz Witczak
doaj   +1 more source

Graphical Sequent Calculi for Modal Logics [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2017
The syntax of modal graphs is defined in terms of the continuous cut and broken cut following Charles Peirce's notation in the gamma part of his graphical logic of existential graphs.
Minghui Ma, Ahti-Veikko Pietarinen
doaj   +1 more source

"Knowing value" logic as a normal modal logic [PDF]

open access: yesCoRR, 2016
21 pages, in Advances in Modal Logic Vol 11: 362-381 College Publications. This is a draft with a more detailed proof of Prop.
Tao Gu 0002, Yanjing Wang 0001
openaire   +2 more sources

A Resolution Prover for Coalition Logic [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2014
We present a prototype tool for automated reasoning for Coalition Logic, a non-normal modal logic that can be used for reasoning about cooperative agency.
Cláudia Nalon   +3 more
doaj   +1 more source

Density of truth in modal logics [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2006
The aim of this paper is counting the probability that a random modal formula is a tautology. We examine $\{ \to,\Box \}$ fragment of two modal logics $\mathbf{S5}$ and $\mathbf{S4}$ over the language with one propositional variable.
Zofia Kostrzycka
doaj   +1 more source

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