Results 11 to 20 of about 5,849,333 (305)

Fixed-point-like theorems on subspaces [PDF]

open access: yesFixed Point Theory and Applications, 2004
We prove a fixed-point-like theorem for multivalued mappings defined on the finite Cartesian product of Grassmannian manifolds and convex sets. Our result generalizes two different kinds of theorems: the fixed-point-like theorem by Hirsch et al.
Cornet Bernard, Bich Philippe
doaj   +3 more sources

Some Remarks on G-Metric Spaces and Fixed Point Theorems

open access: yesInternational Journal of Analysis and Applications, 2014
We notice some remarks on G-metric spaces and the fixed point results of contractive mappings defined on such spaces. Our results generalize, extend and complement recent fixed point theorems established by  Jleli and Samet [M. Jleli and B.
Vesna Cojbasic Rajic
doaj   +3 more sources

On a Fixed Point Theorem of Kirk [PDF]

open access: yesProceedings of the American Mathematical Society, 1995
Let X be a reflexive Banach space, D an open and bounded subset of X , and T
Morales, Claudio H.   +1 more
openaire   +1 more source

Fixed point theorems for solutions of the stationary Schrodinger equation on cones

open access: yes, 2021
The main aim of this paper is to study and establish some new coincidence point and common fixed point theorems for solutions of the stationary Schrodinger equation on cones.
Xue, Gaixian, Yuzbasi, Eve
core   +1 more source

A fixed point theorem revisited [PDF]

open access: yesProceedings of the American Mathematical Society, 1988
A version of a theorem commonly referred to as Caristi’s Theorem is given. It has an elementary constructive proof and it includes many generalizations of Banach’s fixed point theorem. Several examples illustrate the diversity that can occur.
Bollenbacher, Alberta, Hicks, T. L.
openaire   +2 more sources

ON A QUASI FIXED-POINT THEOREM [PDF]

open access: yesBulletin of the Korean Mathematical Society, 2003
In the paper under review, the author generalizes, in some aspects, the quasi fixed-point theorem due to \textit{I. Lefebvre} [Set-Valued Anal. 9, No. 3, 273--288 (2001; Zbl 0986.54051)] and proves the following Theorem. Let \(I\) and \(J\) be any index sets.
openaire   +2 more sources

GENERALIZED FIXED POINT THEOREM

open access: yesDemonstratio Mathematica, 1983
Let X be a metric space, A be a nonempty closed convex subset of a uniformly convex Banach space \((Y,| \cdot |)\), \(CB(A)\) be the collection of all nonempty closed convex and bounded subsets of A metrized by the Hausdorff metric D. the following Krasnosielskii type fixed point theorem is proved: Suppose that \(\Gamma: A\to X\) is a continuous ...
Kisielewicz, M., Rybiński, L.
openaire   +2 more sources

Fixed point theorems for F-expanding mappings

open access: yesFixed Point Theory and Applications, 2017
Recently, Wardowski (Fixed Point Theory Appl. 2012:94, 2012) introduced a new concept of F-contraction and proved a fixed point theorem which generalizes the Banach contraction principle.
Jarosław Górnicki
doaj   +1 more source

Some fixed-point theorems of convex orbital $(\alpha, \beta )$-contraction mappings in geodesic spaces [PDF]

open access: yes, 2023
The aim of this paper is to broaden the applicability of convex orbital ( α , β ) $(\alpha, \beta )$ -contraction mappings to geodesic spaces. This class of mappings is a natural extension of iterated contraction mappings.
Shukla, Rahul, Rahul Shukla
core   +1 more source

A fixed point theorem for COFEs

open access: yesCoRR, 2023
A new fixed point principle for complete ordered families of equivalences (COFEs) is presented, which is stronger than the standard Banach-type fixed point principle.
openaire   +2 more sources

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