Results 1 to 10 of about 6,773 (45)

Neutrosophic Soft Fixed Points [PDF]

open access: yesNeutrosophic Sets and Systems, 2020
. In a wide spectrum of mathematical issues, the presence of a fixed point (FP) is equal to the presence of a appropriate map solution. Thus in several fields of math and science, the presence of a fixed point is important.
Madad Khan   +4 more
doaj   +1 more source

Approximate fixed points and fixed points for multi-valued almost E-contractions

open access: yesTopological Algebra and its Applications, 2021
In this paper, we introduce the concept of multi-valued almost E-contractions. We then present some approximate fixed point and fixed point results for such mappings in metric spaces.
Hoc Nguyen Huu
doaj   +1 more source

Fixed point combinators as fixed points of higher-order fixed point generators [PDF]

open access: yesLogical Methods in Computer Science, 2020
Corrado B\"ohm once observed that if $Y$ is any fixed point combinator (fpc), then $Y(\lambda yx.x(yx))$ is again fpc. He thus discovered the first "fpc generating scheme" -- a generic way to build new fpcs from old.
Andrew Polonsky
doaj   +1 more source

Digital fixed points, approximate fixed points, and universal functions

open access: yesApplied General Topology, 2016
A. Rosenfeld [23] introduced the notion of a digitally continuous function between digital images, and showed that although digital images need not have fixed point properties analogous to those of the Euclidean spaces modeled by the images, there often ...
Laurence Boxer   +4 more
doaj   +1 more source

Fixed Points Theorems for Non-Transitive Relations [PDF]

open access: yesLogical Methods in Computer Science, 2022
In this paper, we develop an Isabelle/HOL library of order-theoretic fixed-point theorems. We keep our formalization as general as possible: we reprove several well-known results about complete orders, often with only antisymmetry or attractivity, a mild
Jérémy Dubut, Akihisa Yamada
doaj   +1 more source

Characterizing fixed points

open access: yesCroatian Operational Research Review, 2017
A set of sufficient conditions which guarantee the existence of a point x⋆ such that f(x⋆) = x⋆ is called a "fixed point theorem". Many such theorems are named after well-known mathematicians and economists.
Sanjo Zlobec
doaj   +1 more source

Fixed points and coupled fixed points in partially ordered ν-generalized metric spaces

open access: yesApplied General Topology, 2018
New fixed point and coupled fixed point theorems in partially ordered ν-generalized metric spaces are presented. Since the product of two ν-generalized metric spaces is not in general a ν-generalized metric space, a different approach is needed than in ...
Mortaza Abtahi   +2 more
doaj   +1 more source

Dynamical fixed points in holography

open access: yesJournal of High Energy Physics, 2022
Typically, an interactive system evolves towards thermal equilibrium, with hydrodynamics representing a universal framework for its late-time dynamics.
Alex Buchel
doaj   +1 more source

Fixed points as Nash equilibria

open access: yesFixed Point Theory and Applications, 2006
The existence of fixed points for single or multivalued mappings is obtained as a corollary of Nash equilibrium existence in finitely many players games.
Torres-Martínez JuanPablo
doaj   +2 more sources

A counter example on common periodic points of functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1998
By a counter example we show that two continuous functions defined on a compact metric space satisfying a certain semi metric need not have a common periodic point.
Aliasghar Alikhani-Koopaei
doaj   +1 more source

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