Results 21 to 30 of about 859,305 (263)

New coincidence and common fixed point theorems

open access: yesApplied General Topology, 2009
In this paper, we obtain some extensions and a generalization of a remarkable fixed point theorem of Proinov. Indeed, we obtain some coincidence and fixed point theorems for asymptotically regular non-self and self-maps without requiring continuity and ...
S.L. Singh   +2 more
doaj   +1 more source

Common fixed point theorems in Menger spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
We proved two common fixed point theorems for four self-mappings and two set-valued mappings with φ-contractive condition in a Menger space.
Chi-Ming Chen, Tong-Huei Chang
doaj   +1 more source

Common fixed point theorems for two and three mappings

open access: yesFixed Point Theory and Applications, 2020
In this paper, we provide common fixed point theorems for two and three commuting mappings which generalize Darbo’s fixed point theorem. An explicit example is given for illustration.
Meryeme El Harrak, Ahmed Hajji
doaj   +1 more source

A New Common Fixed Point Theorem for Three Commuting Mappings

open access: yesAxioms, 2020
In the present paper, we propose a common fixed point theorem for three commuting mappings via a new contractive condition which generalizes fixed point theorems of Darbo, Hajji and Aghajani et al.
Meryeme El Harrak, Ahmed Hajji
doaj   +1 more source

Common fixed points and partial orders [PDF]

open access: yesProceedings of the American Mathematical Society, 1979
It is observed that certain theorems on common fixed points may be derived from a theorem on partially ordered sets.
openaire   +1 more source

Common Fixed-Point and Fixed-Circle Results for a Class of Discontinuous F-Contractive Mappings

open access: yesMathematics, 2022
The exploration of contractive inequalities which do not imply the continuity of the mapping at fixed points was an interesting open problem for quite some time.
Pradip Debnath
doaj   +1 more source

On common fixed points of linear contractions [PDF]

open access: yesProceedings of the American Mathematical Society, 1990
In this note we give a short and direct proof of a result about convex semigroups of linear contractions.
openaire   +1 more source

Results on common fixed points [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We establish common fixed point theorems related with families of self mappings on metric spaces. Our results extend, improve, and unify the results due to Fisher (1977, 1978, 1979, 1981, 1984), Jungck (1988), and Ohta and Nikaido (1994).
Zeqing Liu, Jeong Sheok Ume
openaire   +2 more sources

Some Common Fixed Point Results in Modular Ultrametric Space Using Various Contractions and Their Application to Well-Posedness

open access: yesMathematics, 2023
The aim of this study is to prove the existence and uniqueness of fixed point and common fixed point theorems for self-mappings in modular ultrametric spaces.
Yahya Almalki   +3 more
doaj   +1 more source

Fixed Point and Common Fixed Point Theorems for α-Property in Cone Ball-Metric Spaces

open access: yesInternational Journal of Analysis and Applications, 2013
In this paper, we define a new cone ball-metric and get fixed points and common fixed points for the α- property in cone ball-metric spaces.
Rajesh Shrivastava   +3 more
doaj   +2 more sources

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