Results 71 to 80 of about 8,811,418 (192)

On common fixed points of compatible mappings in metric and Banach spaces

open access: yes, 1988
We prove a number of results concerning the existence of common fixed points of a family of maps satisfying certain contractive conditions in metric and Banach spaces.
B. E. Rhoades   +3 more
core   +1 more source

On common fixed and periodic points of commuting functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1998
It is known that two commuting continuous functions on an interval need not have a common fixed point. It is not known if such two functions have a common periodic point. In this paper we first give some results in this direction.
Aliasghar Alikhani-Koopaei
doaj   +1 more source

Common Fixed Points of Weak Contractions in Cone Metric Spaces [PDF]

open access: yes, 2012
Results on common fixed points of mappings in cone metric spaces under weak contractive conditions (B. S. Choudhury and N. Metiya (2010)) are unified and generalized.
Ding, Hui-Sheng   +8 more
core   +1 more source

On a fixed point theorem of Fisher and Sessa

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
A fixed point theorem of Fisher and Sessa is generalized by replacing the requirements of commutativity and nonexpansiveness by compatibility and continuity respectively.
Gerald Jungck
doaj   +1 more source

Common Fixed Points of (α,η) − (θ,ϝ) Rational Contractions with Applications

open access: yesJournal of Mathematics, 2019
We present the notion of set valued (α,η)-(θ,ϝ) rational contraction mappings and then some common fixed point results of such mappings in the setting of metric spaces are established.
Mujahid Abbas   +2 more
doaj   +1 more source

Common fixed points for Lipschitzian semigroups

open access: yesElectronic Journal of Differential Equations, 2006
Summary: \textit{T.--C.\ Lim} and \textit{H.--K.\ Xu} [Nonlinear Anal., Theory Methods Appl.\, 25, No.\,11, 1231--1235 (1995; Zbl 0845.47045)] established a fixed point theorem for uniformly Lipschitzian mappings in metric spaces with uniform normal structure. Recently, \textit{Y.--Y.\,Huang} and \textit{C.--C.\,Hong} [Int.\, J.\, Math.\, Math.\, Sci.\,
Samir Lahrech   +2 more
openaire   +2 more sources

Some common fixed point theorems for biased mappings [PDF]

open access: yes, 2000
summary:Some common fixed point theorems in normed spaces are proved using the concept of biased mappings- a generalization of compatible ...
Sahar, Salma, Shahzad, Naseer
core   +1 more source

On coincidence and common fixed points of nearly densifying mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
Coincidence and common fixed point theorems for certain new classes of nearly densifying mappings are established. Our results extend, improve, and unify a lot of previously known theorems.
Zeqing Liu, Jeong Sheok Ume
doaj   +1 more source

Common fixed point and common coupled fixed point theorems for weakly monotone mappings

open access: yesBoletim da Sociedade Paranaense de Matemática
In this paper we have established two common fixed point theorems which are variants of the fixed point theorem of Boyd and Wong [On nonlinear contractions, Proc. Amer. Math. Soc. 20(1969), 458-464]. By applying the newly established fixed point theorems two common coupled fixed point theorems have been proved for a pair of weakly increasing mappings ...
E. Prajisha, P. Shaini
openaire   +3 more sources

Common Fixed Points for Nonlinear Quasi-Contractions of SiriT Type

open access: yes, 2020
We establish common fixed points theorems for two self-mappings satisfying a nonlinear contractive condition ofĆirić type with a Q-function. Furthermore, using the scalarization method, we deduce some results of common fixed point in tvs-cone metric ...
Fei He
core  

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