Results 31 to 40 of about 4,288,634 (382)

On a fixed point problem of Reich [PDF]

open access: yesProceedings of the American Mathematical Society, 1996
In this paper, we give an affirmative answer to a fixed point problem of S. Reich.
openaire   +1 more source

Fixed point structures on a set-mapping pair and cartesian product

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2022
In this paper we study the following problem (Problem 4.2 in, I.A. Rus, Sets with structure, mappings and fixed point property: fixed point structures, Fixed Point Theory 23, No. 2 (2022), 689-706):
Rus Ioan A., Şerban Marcel-Adrian
doaj   +1 more source

Tischler graphs of critically fixed rational maps and their applications [PDF]

open access: yes, 2019
A rational map $f:\widehat{\mathbb{C}}\to\widehat{\mathbb{C}}$ on the Riemann sphere $\widehat{\mathbb{C}}$ is called critically fixed if each critical point of $f$ is fixed under $f$.
Hlushchanka, Mikhail
core   +3 more sources

Generalized robust shrinkage estimator and its application to STAP detection problem [PDF]

open access: yes, 2014
Recently, in the context of covariance matrix estimation, in order to improve as well as to regularize the performance of the Tyler's estimator [1] also called the Fixed-Point Estimator (FPE) [2], a "shrinkage" fixed-point estimator has been introduced ...
Chitour, Yacine   +2 more
core   +2 more sources

Proximal Gradient Method for Solving Bilevel Optimization Problems

open access: yesMathematical and Computational Applications, 2020
In this paper, we consider a bilevel optimization problem as a task of finding the optimum of the upper-level problem subject to the solution set of the split feasibility problem of fixed point problems and optimization problems.
Seifu Endris Yimer   +2 more
doaj   +1 more source

Existence, Data Dependence and Stability of Fixed Points of Multivalued Maps in Incomplete Metric Spaces

open access: yesAnnales Mathematicae Silesianae, 2023
In this paper we formulate a setvalued fixed point problem by combining four prevalent trends of fixed point theory. We solve the problem by showing that the set of fixed points is nonempty.
Choudhury Binayak S.   +3 more
doaj   +1 more source

Decidability Results for the Boundedness Problem

open access: yes, 2014
We prove decidability of the boundedness problem for monadic least fixed-point recursion based on positive monadic second-order (MSO) formulae over trees.
Blumensath, Achim   +2 more
core   +1 more source

Periodic travelling wave solutions of discrete nonlinear Schr\"odinger equations

open access: yes, 2017
The existence of nonzero periodic travelling wave solutions for a general discrete nonlinear Schr\"odinger equation (DNLS) on finite one-dimensional lattices is proved.
Hennig, Dirk
core   +2 more sources

On solutions of inclusion problems and fixed point problems [PDF]

open access: yesFixed Point Theory and Applications, 2013
The paper proposes an iterative algorithm for the solution of the following problem: \[ x= S(x) \text{ and } x\in (A+B)^{-1}(0), \] where \(S:C\to C\) is a mapping and \(A,B:C\to H\) are two monotone mappings on a nonempty, closed, convex subset \(C\) of an Hilbert space \(H\).
openaire   +2 more sources

A Refined Inertial-like Subgradient Method for Split Equality Problems

open access: yesAppliedMath
This paper presents the convergence analysis of a newly proposed algorithm for approximating solutions to split equality variational inequality and fixed point problems in real Hilbert spaces.
Khushdil Ahmad   +2 more
doaj   +1 more source

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