Results 1 to 10 of about 2,884,547 (321)

Common Coincidence Points and Common Fixed Points in Fuzzy Semi-Metric Spaces [PDF]

open access: goldMathematics, 2018
We propose the so-called fuzzy semi-metric space in which the symmetric condition is not assumed to be satisfied. In this case, there are four kinds of triangle inequalities that should be considered.
Hsien-Chung Wu
doaj   +5 more sources

Compatible mappings and common fixed points [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1986
A generalization of the commuting mapping concept is introduced. Properties of this “weakened commutativity” are derived and used to obtain results which generalize a theorem by Park and Bae, a theorem by Hadzic, and others.
Gerald Jungck
doaj   +3 more sources

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
doaj   +2 more sources

Multivalued Common Fixed Points Theorem in Complex b-Metric Spaces [PDF]

open access: goldMathematics, 2023
In this paper, we establish a result for the existence of common fixed points for multi-valued mappings, satisfying some contractions for complex-valued b-metric spaces. Finally, we present an example to illustrate and support our results.
Mohamed Saadi, Taieb Hamaizia
doaj   +2 more sources

Common Fixed Points for Multimaps in Metric Spaces

open access: greenFixed Point Theory and Applications, 2010
We discuss the existence of common fixed points in uniformly convex metric spaces for single-valued pointwise asymptotically nonexpansive or nonexpansive mappings and multivalued nonexpansive, -nonexpansive, or -semicontinuous maps under different ...
Hussain Nawab, Espínola Rafa
doaj   +3 more sources

Stability of common fixed points in uniform spaces [PDF]

open access: goldFixed Point Theory and Applications, 2011
Stability results for a pair of sequences of mappings and their common fixed points in a Hausdorff uniform space using certain new notions of convergence are proved. The results obtained herein extend and unify several known results.
Singh Shyam   +2 more
doaj   +2 more sources

Common fixed points for alpha-psi-phi-contractions in generalized metric spaces

open access: diamondNonlinear Analysis, 2014
We establish some common fixed point theorems for mappings satisfying an α-ψ-ϕ-contractive condition in generalized metric spaces. Presented theorems extend and generalize many existing results in the literature.
Vincenzo La Rosa, Pasquale Vetro
doaj   +3 more sources

Unique Common Fixed Points for Expansive Maps

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2023
In this work, we establish three common fixed point results for expansive maps satisfying implicit relations in metric and dislocated metric spaces. We do this by utilizing recently developed concept of occasionally weakly biased maps of type A.
Hadeel Z. Alzumi   +2 more
doaj   +3 more sources

Common fixed points of set-valued mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
The main purpose of this paper is to obtain a common fixed point for a pair of set-valued mappings of Greguš type condition. Our theorem extend Diviccaro et al. (1987), Guay et al. (1982), and Negoescu (1989).
M. R. Singh, L. S. Singh, P. P. Murthy
doaj   +3 more sources

Compatible mappings and common fixed points “revisited” [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
A fixed point theorem involving a Meir-Keeler type contraction principle is refined by diminishing continuity requirements.
Gerald Jungck
doaj   +3 more sources

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