Results 31 to 40 of about 278,852 (350)

Common fixed point theorems and applications

International Journal of Mathematics and Mathematical Sciences, 1997
The purpose of this paper is to discuss the existence of common fixed points for mappings in general quasi-metric spaces. As applications, some common fixed point theorems for mappings in probabilistic quasi-metric spaces are given. The results presented
Hemant Kumar Pathak, Shih Sen Chang, Yeol Je Cho, Jong Soo Jung   +3 more
doaj   +1 more source

Fixed point theorems for F-expanding mappings

Fixed 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 Krasnosel’skii-type fixed point theorems for Meir–Keeler-type mappings

Nonlinear Analysis, 2020
In this paper, inspired by the idea of Meir–Keeler contractive mappings, we introduce Meir–Keeler expansive mappings, say MKE, in order to obtain Krasnosel’skii-type fixed point theorems in Banach spaces. The idea of the paper is to combine the notion of
Ehsan Pourhadi, Reza Saadati, Zoran Kadelburg   +2 more
doaj   +1 more source

Common Fixed Point Theorems in Fuzzy Metric Spaces

, 2016
In this paper we used the concept of compatible of type (P) in fuzzy metric spaces. Our result generalize earlier results due to Vasuki [18], Chugh and Kumar [3] and others. 2000 Mathematics Subject Classification: 54H25, 47H10.
R. N. Patel, M. K. Tiwari
semanticscholar   +1 more source

Fixed-point-like theorems on subspaces

Fixed 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   +2 more sources

Some Common Fixed Point Theorems in Partially Ordered Sets

Journal of Applied Mathematics, 2020
The purpose of this paper is to prove some new fixed point theorem and common fixed point theorems of a commuting family of order-preserving mappings defined on an ordered set, which unify and generalize some relevant fixed point theorems.
Khadija Bouzkoura, Said Benkaddour
doaj   +1 more source

Fixed point theorems of JS-quasi-contractions

, 2016
In this paper, we introduce the concept of JS-quasi-contraction and prove some fixed point results for JS-quasi-contractions in complete metric spaces under the assumption that the involving function is nondecreasing and continuous.
Zhilong Li, Shujun Jiang
semanticscholar   +1 more source

On Tarski’s fixed point theorem [PDF]

Proceedings of the American Mathematical Society, 2015
Proc. Amer. Math.
openaire   +4 more sources

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

Boletim 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].
E. Prajisha, P. Shaini
doaj   +1 more source

A generalized metric space and related fixed point theorems

, 2015
We introduce a new concept of generalized metric spaces for which we extend some well-known fixed point results including Banach contraction principle, Ćirić’s fixed point theorem, a fixed point result due to Ran and Reurings, and a fixed point result ...
M. Jleli, B. Samet
semanticscholar   +1 more source