Results 31 to 40 of about 830,992 (228)

Some approximate fixed point theorems without continuity of the operator using auxiliary functions [PDF]

open access: yesMathematica Bohemica, 2019
We introduce partial generalized convex contractions of order $4$ and rank $4$ using some auxiliary functions. We present some results on approximate fixed points and fixed points for such class of mappings having no continuity condition in $\alpha ...
Sumit Chandok   +2 more
doaj   +1 more source

The metric completion of Outer Space [PDF]

open access: yesGeometriae Dedicata, 2019
We develop the theory of a metric completion of an asymmetric metric space. We characterize the points on the boundary of Outer Space that are in the metric completion of Outer Space with the Lipschitz metric. We prove that the simplicial completion, the subset of the completion consisting of simplicial tree actions, is homeomorphic to the free ...
openaire   +2 more sources

On the Intuitionistic fuzzy topological (metric and normed) spaces

open access: yes, 2005
In this paper, we define precompact set in intuitionistic fuzzy metric spaces and prove that any subset of an intuitionistic fuzzy metric space is compact if and only if it is precompact and complete.
Amini   +22 more
core   +1 more source

Finite Ball Intersection Property of the Urysohn Universal Space [PDF]

open access: yes, 2014
In a paper published posthumously, P.S. Urysohn constructed a complete, separable metric space that contains an isometric copy of every complete separable metric space, nowadays referred to as the Urysohn universal space.
Aksoy, Asuman Guven, Ibragimov, Zair
core  

Some Fixed Point Theorem for Mapping on Complete G-Metric Spaces

open access: yesFixed Point Theory and Applications, 2008
We prove some fixed point results for mapping satisfying sufficient conditions on complete G-metric space, also we showed that if the G-metric space (X,G) is symmetric, then the existence and uniqueness of these fixed point results follow from well ...
Fadi Awawdeh   +2 more
doaj   +1 more source

A COMPLETION THEOREM FOR COMPLEX VALUED S-METRIC SPACE

open access: yesBarekeng
Any complex valued S-metric space where each Cauchy sequence converges to a point in this space is said to be complete. However, there are complex valued S-metric spaces that are incomplete but can be completed.
Mariatul Kiftiah   +3 more
doaj   +1 more source

Rational g-omega-weak contractions and fixed point theorems in 0-sigma-complete metric-like spaces

open access: yesNonlinear Analysis, 2017
We bring in the notion of rational g-ω-weak contractions in metric-like spaces and demonstrate common fixed point results for such mappings in 0-σ-complete metric-like spaces.
Hemant Kumar Nashine   +2 more
doaj   +1 more source

Coincidence Best Proximity Point Results in Branciari Metric Spaces with Applications

open access: yesJournal of Function Spaces, 2020
This paper is aimed at studying the uniqueness of coincidence best proximity point for ϑ,α+,g-proximal contractions in complete Branciari metric space.
Naeem Saleem   +2 more
doaj   +1 more source

Completable fuzzy metric spaces

open access: yesTopology and its Applications, 2017
[EN] In the context of fuzzy metrics in the sense of George and Veeramani, we introduce the concept of stratified fuzzy metric. Many well-known fuzzy metrics are stratified. We prove that stratified strong fuzzy metric spaces (X, M, *) are completable, under the assumption that * is integral (positive).
Gregori, Valentín   +2 more
openaire   +3 more sources

Related fixed points for set valued mappings on two metric spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
Some related fixed points theorems for set valued mappings on two complete and compact metric spaces are proved.
Brian Fisher, Duran Türkoglu
doaj   +1 more source

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