Results 31 to 40 of about 1,628,955 (269)

On Essential Fixed Points [PDF]

open access: yesProceedings of the American Mathematical Society, 1959
Wenn jede stetige Abbildung des kompakten Hausdorffschen Raumes \(X\) in sich wenigstens einen Fixpunkt hat, so ist \(p \in X\) wesentlicher Fixpunkt von \(f: X \rightarrow p\). [\glqq Wesentlich\grqq{} bedeutet: Zu jeder Umgebung \(U\) von \(p\) gibt es in \(X^X\) (kompakt-offen topologisiert) eine Umgebung \(N\) von \(f\), so daß jedes \(g \in N ...
openaire   +2 more sources

Intuitionistic fixed point logic [PDF]

open access: yesAnnals of Pure and Applied Logic, 2021
We study the system IFP of intuitionistic fixed point logic, an extension of intuitionistic first-order logic by strictly positive inductive and coinductive definitions. We define a realizability interpretation of IFP and use it to extract computational content from proofs about abstract structures specified by arbitrary classically true disjunction ...
Ulrich Berger 0001, Hideki Tsuiki
openaire   +3 more sources

A Modified Conjugate Descent Projection Method for Monotone Nonlinear Equations and Image Restoration

open access: yesIEEE Access, 2020
In this article, we propose a modified conjugate descent (CD) projection algorithm for solving system of nonlinear monotone equations with convex constraints.
Sani Aji   +4 more
doaj   +1 more source

A parallel hybrid accelerated extragradient algorithm for pseudomonotone equilibrium, fixed point, and split null point problems

open access: yesAdvances in Difference Equations, 2021
This paper provides iterative construction of a common solution associated with the classes of equilibrium problems (EP) and split convex feasibility problems.
Yasir Arfat   +4 more
doaj   +1 more source

Fractional order mathematical modeling of typhoid fever disease

open access: yesResults in Physics, 2022
This manuscript is devoted to focusing on the modeling and numerical solution of the dynamical model of Typhoid Fever. We use the Atangana–Baleanu operator with the Mittag–Leffler function in Caputo sense to study the behavior of the model.
Muhammad Sinan   +6 more
doaj   +1 more source

Entropy as a Fixed Point

open access: yesTheoretical Computer Science, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Convergence theorems for monotone vector field inclusions and minimization problems in Hadamard spaces

open access: yesAnalysis and Geometry in Metric Spaces, 2023
This article analyses two schemes: Mann-type and viscosity-type proximal point algorithms. Using these schemes, we establish Δ-convergence and strong convergence theorems for finding a common solution of monotone vector field inclusion problems, a ...
Salisu Sani   +2 more
doaj   +1 more source

Fixed point algebras [PDF]

open access: yesBulletin of the American Mathematical Society, 1982
A fixed point algebra (FPA) is a pair \(\) of Boolean algebras satisfying the following properties: (1) Each \(\alpha \in B\) is a mapping from A into A; (2) Boolean operations in B are pointwise on A; (3) each constant mapping on A is an element of B; (4) each \(\alpha \in B\) has a fixed point in A.
openaire   +2 more sources

On fixed points of permutations [PDF]

open access: yesJournal of Algebraic Combinatorics, 2008
The number of fixed points of a random permutation of 1,2,...,n has a limiting Poisson distribution. We seek a generalization, looking at other actions of the symmetric group. Restricting attention to primitive actions, a complete classification of the limiting distributions is given.
Diaconis, Persi   +2 more
openaire   +3 more sources

Unique fixed points vs. least fixed points

open access: yesTheoretical Computer Science, 1980
AbstractThe aim of this paper is to compare two approaches to the semantics of programming languages: the least fixed point approach, and the unique fixed point approach. Briefly speaking, we investigate here the problem of existence of extensions of algebras with the unique fixed point property to ordered algebras with the least fixed point property ...
openaire   +2 more sources

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