Results 21 to 30 of about 11,322,894 (310)

A dual problem to least fixed points

open access: yesTheoretical Computer Science, 1981
AbstractAfter a simple and convenient generalization of the notion of continuous functions and continuous lattices we answer the following question: when for a given element x of a complete lattice there is a least continuous function having x as a least fixed point?
V. L. Nguyen, Jean-Louis Lassez
openaire   +3 more sources

Complexity of fixed point counting problems in Boolean networks [PDF]

open access: yesJournal of Computer and System Sciences, 2022
A Boolean network (BN) with $n$ components is a discrete dynamical system described by the successive iterations of a function $f:\{0,1\}^n \to \{0,1\}^n$. This model finds applications in biology, where fixed points play a central role. For example, in genetic regulations, they correspond to cell phenotypes.
Florian Bridoux   +3 more
openaire   +4 more sources

Fixed point theory in metric type spaces

open access: yes, 2015
Written by a team of leading experts in the field, this volume presents a self-contained account of the theory, techniques and results in metric type spaces (in particular in G-metric spaces); that is, the text approaches this important area of fixed ...
Roldán-López-de-Hierro, Antonio Francisco   +7 more
core   +2 more sources

An Extension of a Problem of Fixed Point

open access: yes, 2016
In this article, we extend the requirement of the Problem 9.2 proposed at Varna 2015 Spring Competition, both in terms of membership of the measure 𝛾, and the case for the problem for the ex-inscribed circle 𝐶. We also try to guide the student in the search and identification of the fixed point, for succeeding in solving any problem of this type.
Patrascu, Ion, Smarandache, Florentin
openaire   +2 more sources

A note on two fixed point problems

open access: yesJournal of Complexity, 2007
The authors discuss and extend the applicability of the exterior ellipsoid algorithm for approximating the fixed points of a system of nonlinear equations. It is shown that the ellipsoid algorithms could be extended and applied to larger classes of functions that are only nonexpanding in the direction of fixed points.
Ch. Boonyasiriwat   +2 more
openaire   +2 more sources

Convergence Rate Analysis for Averaged Fixed Point Iterations in Common Fixed Point Problems [PDF]

open access: yesSIAM Journal on Optimization, 2017
Summary: In this paper, we establish sublinear and linear convergence of fixed point iterations generated by averaged operators in a Hilbert space. Our results are achieved under a bounded Hölder regularity assumption which generalizes the well-known notion of bounded linear regularity.
Jonathan M. Borwein   +2 more
openaire   +3 more sources

On the Complexity of 2D Discrete Fixed Point Problem

open access: yesTheoretical Computer Science, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xi Chen 0001, Xiaotie Deng
openaire   +2 more sources

On the problem of discontinuity at fixed point

open access: yesFilomat, 2020
In this paper we obtain two known solutions of the problem of continuity of contractive mappings at fixed point under alternative set of conditions; these known solutions followed the first solution of Rhoades problem by Pant in 1999. We show that these two solutions characterize completeness and we also compare these with some recent ...
Joshi, Bharti   +3 more
openaire   +3 more sources

Circumscribed ellipsoid algorithm for fixed-point problems [PDF]

open access: yesMathematics of Computation, 2010
We present a new implementation of the almost optimal Circumscribed Ellipsoid (CE) Algorithm for approximating fixed points of nonexpanding functions, as well as of functions that may be globally expanding, however, are nonexpanding/contracting in the direction of fixed points.
Ch. Boonyasiriwat   +2 more
openaire   +2 more sources

Hölder-type spaces, singular operators, and fixed point theorems

open access: yes, 2021
In this note, we give a sufficient condition for the existence of Hölder-type solutions to a class of fractional initial value problems involving Caputo derivatives.
Sadarangani, Kishin   +12 more
core   +2 more sources

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