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Inadequacy of Modal Logic in Quantum Settings [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2019
We test the principles of classical modal logic in fully quantum settings. Modal logic models our reasoning in multi-agent problems, and allows us to solve puzzles like the muddy children paradox.
Nuriya Nurgalieva, Lídia del Rio
doaj   +1 more source

Semantical Considerations on Modal Logic

open access: yesProblemos, 2023
Iš anglų kalbos vertė ir pratarmę parašė Pranciškus Gricius, Vilniaus ...
Saul A. Kripke
doaj   +1 more source

A logic of separating modalities

open access: yesTheoretical Computer Science, 2016
AbstractWe present a logic of separating modalities, LSM, that is based on Boolean BI. LSM's modalities, which generalize those of S4, combine, within a quite general relational semantics, BI's resource semantics with modal accessibility. We provide a range of examples illustrating their use for modelling.
Courtault, J-R, Galmiche, D, Pym, D
openaire   +3 more sources

Maximality in modal logic

open access: yesAnnals of Pure and Applied Logic, 1987
A system FP of propositional logic is maximal for the corresponding system FA of arithmetic if the underivability of \(A(p_ 1,...,p_ n)\) in FP implies underivability in FA of \(A(B_ 1,...,B_ n)\) for some sentences \(B_ 1,...,B_ n\) of FA. The authors prove maximality for Grzegorczyk's modal logic Grz and for S4.
Harvey M. Friedman, Robert C. Flagg
openaire   +3 more sources

Lindstrom theorems for fragments of first-order logic [PDF]

open access: yesLogical Methods in Computer Science, 2009
Lindstr\"om theorems characterize logics in terms of model-theoretic conditions such as Compactness and the L\"owenheim-Skolem property. Most existing characterizations of this kind concern extensions of first-order logic.
Johan van Benthem   +2 more
doaj   +1 more source

The modal logic of forcing [PDF]

open access: yesTransactions of the American Mathematical Society, 2007
A set theoretical assertionψ\psiisforceableorpossible, written◊ψ\Diamond \psi, ifψ\psiholds in some forcing extension, andnecessary, written◻ψ\Box \psi, ifψ\psiholds in all forcing extensions. In this forcing interpretation of modal logic, we establish that if ZFC is consistent, then the ZFC-provable principles of forcing are exactly those in the modal
Hamkins, J.D., Löwe, B.
openaire   +5 more sources

Linear Abelian Modal Logic

open access: yesBulletin of the Section of Logic
A many-valued modal logic, called linear abelian modal logic \(\rm {\mathbf{LK(A)}}\) is introduced as an extension of the abelian modal logic \(\rm \mathbf{K(A)}\). Abelian modal logic \(\rm \mathbf{K(A)}\) is the minimal modal extension of the logic of
Hamzeh Mohammadi
doaj   +1 more source

Modal Logic before Kripke

open access: yesOrganon F, 2019
100 years ago C.I. Lewis published A Survey of Symbolic Logic, which included an axiom system for a notion of implication which was ‘stricter’ than that found in Whitehead and Russell’s Principia Mathematica.
Max Cresswell
doaj   +1 more source

Titanium‐S23: A New Alloy with Ultra‐High Tensile Toughness Directly from the Solid‐State Processing of Recycled Ti–6Al–4V and Ti–5Al–5Mo–5V–3Cr Powders using Field Assisted Sintering Technology

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores combining two existing aerospace titanium alloy powders, processing them via field‐assisted sintering technology and the subsequent discovery of a novel alloy composition, termed S23, with ultra‐high tensile toughness. Fine‐scale alpha precipitates favorably form in the alloy despite the relatively slow cooling, providing an ...
Samuel Lister   +2 more
wiley   +1 more source

Cylindric Modal Logic

open access: yesJournal of Symbolic Logic, 1995
AbstractTreating the existential quantification ∃νi as a diamond ♢i and the identity νi = νj as a constant δij, we study restricted versions of first order logic as if they were modal formalisms. This approach is closely related to algebraic logic, as the Kripke frames of our system have the type of the atom structures of cylindric algebras; the full ...
openaire   +5 more sources

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