Results 21 to 30 of about 1,698,712 (321)

Order-Invariant First-Order Logic over Hollow Trees [PDF]

open access: yes, 2020
We show that the expressive power of order-invariant first-order logic collapses to first-order logic over hollow trees. A hollow tree is an unranked ordered tree where every non leaf node has at most four adjacent nodes: two siblings (left and right ...
Grange, Julien, Segoufin, Luc
core   +4 more sources

A First-Order Complete Temporal Logic for Structured Context-Free Languages [PDF]

open access: yesLogical Methods in Computer Science, 2022
The problem of model checking procedural programs has fostered much research towards the definition of temporal logics for reasoning on context-free structures. The most notable of such results are temporal logics on Nested Words, such as CaRet and NWTL.
Michele Chiari   +2 more
doaj   +1 more source

Finite Model Reasoning in Expressive Fragments of First-Order Logic [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2017
Over the past two decades several fragments of first-order logic have been identified and shown to have good computational and algorithmic properties, to a great extent as a result of appropriately describing the image of the standard translation of ...
Lidia Tendera
doaj   +1 more source

Continuous first order logic and local stability [PDF]

open access: yes, 2008
We develop continuous first order logic, a variant of the logic described in \cite{Chang-Keisler:ContinuousModelTheory}. We show that this logic has the same power of expression as the framework of open Hausdorff cats, and as such extends Henson's logic ...
Usvyatsov, Alexander, Yaacov, Itaï Ben
core   +5 more sources

THE FIRST-ORDER LOGIC OF CZF IS INTUITIONISTIC FIRST-ORDER LOGIC

open access: yesThe Journal of Symbolic Logic, 2022
AbstractWe prove that the first-order logic of CZF is intuitionistic first-order logic. To do so, we introduce a new model of transfinite computation (Set Register Machines) and combine the resulting notion of realisability with Beth semantics. On the way, we also show that the propositional admissible rules of CZF are exactly those of intuitionistic ...
openaire   +4 more sources

A first-order logic for string diagrams [PDF]

open access: yes, 2015
Equational reasoning with string diagrams provides an intuitive means of proving equations between morphisms in a symmetric monoidal category. This can be extended to proofs of infinite families of equations using a simple graphical syntax called !-box ...
Kissinger, Aleks, Quick, David
core   +2 more sources

On Recurrent Neural Network Based Theorem Prover For First Order Minimal Logic [PDF]

open access: yesJournal of Universal Computer Science, 2021
There are three main problems for theorem proving with a standard cut-free system for the first order minimal logic. The first problem is the possibility of looping. Secondly, it might generate proofs which are permutations of each other. Finally, during
Ashot Baghdasaryan, Hovhannes Bolibekyan
doaj   +3 more sources

First-order logical duality

open access: yesAnnals of Pure and Applied Logic, 2013
From a logical point of view, Stone duality for Boolean algebras relates theories in classical propositional logic and their collections of models. The theories can be seen as presentations of Boolean algebras, and the collections of models can be topologized in such a way that the theory can be recovered from its space of models.
Awodey, Steve, Forssell, Henrik
openaire   +2 more sources

A Denotational Semantics for First-Order Logic [PDF]

open access: yes, 2000
In Apt and Bezem [AB99] (see cs.LO/9811017) we provided a computational interpretation of first-order formulas over arbitrary interpretations. Here we complement this work by introducing a denotational semantics for first-order logic.
E. M. Clarke   +9 more
core   +4 more sources

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