Results 1 to 10 of about 107,162 (337)

A realizability semantics for inductive formal topologies, Church's Thesis and Axiom of Choice [PDF]

open access: yesLogical Methods in Computer Science, 2021
We present a Kleene realizability semantics for the intensional level of the Minimalist Foundation, for short mtt, extended with inductively generated formal topologies, Church's thesis and axiom of choice.
Maria Emilia Maietti   +2 more
doaj   +5 more sources

On the axiom of choice [PDF]

open access: yesریاضی و جامعه, 2022
In this article, we have a brief historical overview of the facts around the axiom of choice (AC) in set theory. In this regard, we will state some of the most important equivalents of AC and also some of the weaker forms of AC.
سید محمد امین خاتمی
doaj   +2 more sources

A program for the full axiom of choice [PDF]

open access: yesLogical Methods in Computer Science, 2021
The theory of classical realizability is a framework for the Curry-Howard correspondence which enables to associate a program with each proof in Zermelo-Fraenkel set theory.
Jean-Louis Krivine
doaj   +1 more source

Blurry Definability

open access: yesMathematics, 2022
I begin the study of a hierarchy of (hereditarily)
Gunter Fuchs
doaj   +1 more source

Inductive and Coinductive Topological Generation with Church's thesis and the Axiom of Choice [PDF]

open access: yesLogical Methods in Computer Science, 2022
In this work we consider an extension MFcind of the Minimalist Foundation MF for predicative constructive mathematics with the addition of inductive and coinductive definitions sufficient to generate Sambin's Positive topologies, namely Martin-L\"of ...
Maria Emilia Maietti   +2 more
doaj   +1 more source

Relative Symmetric Reductions under Multi-Choice Non-Transferable-Utility Situations

open access: yesMathematics, 2022
In many game-theoretical results, the reduction axiom and its converse have been regarded as important requirements under axiomatic processes for solutions.
Yu-Hsien Liao
doaj   +1 more source

Quantum Theory without the Axiom of Choice, and Lefschetz Quantum Physics

open access: yesPhysics, 2023
In this paper, we discuss quantum formalisms that do not use the axiom of choice. We also consider the fundamental problem that addresses the (in)correctness of having the complex numbers as the base field for Hilbert spaces in the København ...
Koen Thas
doaj   +1 more source

The Cardinal Squaring Principle and an Alternative Axiomatization of NFU

open access: yesBulletin of the Section of Logic, 2023
In this paper, we rigorously prove the existence of type-level ordered pairs in Quine’s New Foundations with atoms, augmented by the axiom of infinity and the axiom of choice (NFU + Inf + AC).
Tin Adlešić, Vedran Čačić
doaj   +1 more source

Axiom of Choice and Complementation [PDF]

open access: yesProceedings of the American Mathematical Society, 1975
It is shown that an intuitionistic model of set theory with the axiom of choice has to be a classical one.
openaire   +1 more source

On the Nielsen-Schreier Theorem in Homotopy Type Theory [PDF]

open access: yesLogical Methods in Computer Science, 2022
We give a formulation of the Nielsen-Schreier theorem (subgroups of free groups are free) in homotopy type theory using the presentation of groups as pointed connected 1-truncated types.
Andrew W Swan
doaj   +1 more source

Home - About - Disclaimer - Privacy