Results 51 to 60 of about 93,331 (288)

Fixed point and periodic point theorems in fuzzy metric space [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2015
In this paper we prove a periodic point theorem in fuzzy metric space and present some common fixed point theorems for occasionally weakly compatible mappings in fuzzy 3- metric spaces under various conditions.
Binod Chandra Tripathy   +2 more
doaj  

Fixed-Point Theorems for Nonlinear Contraction in Fuzzy-Controlled Bipolar Metric Spaces

open access: yesAxioms, 2023
In this paper, we introduce the concept of fuzzy-controlled bipolar metric space and prove some fixed-point theorems in this space. Our results generalize and expand some of the literature’s well-known results.
Gunaseelan Mani   +4 more
doaj   +1 more source

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

Common Fixed Point Theorems in Non-archimedean Fuzzy Metric Spaces [PDF]

open access: yes, 2012
The aim of this paper is to define the concept of weakly comparable multi-valued mappings. Also we obtain some common fixed point theorems for pairs of weakly comparable multi-valued mappings in ordered non-Archimedean fuzzy metric ...
Hariom Dubey, Naval Singh, Reena Jain
core   +1 more source

Near Fixed Point Theorems in the Space of Fuzzy Numbers

open access: yesMathematics, 2018
The fuzzy numbers are fuzzy sets owning some elegant mathematical structures. The space consisting of all fuzzy numbers cannot form a vector space because it lacks the concept of the additive inverse element.
Hsien-Chung Wu
doaj   +1 more source

Metric Properties of the Fuzzy Sphere

open access: yes, 2012
The fuzzy sphere, as a quantum metric space, carries a sequence of metrics which we describe in detail. We show that the Bloch coherent states, with these spectral distances, form a sequence of metric spaces that converge to the round sphere in the high ...
A. Connes   +34 more
core   +1 more source

Median evidential c-means algorithm and its application to community detection [PDF]

open access: yes, 2015
Median clustering is of great value for partitioning relational data. In this paper, a new prototype-based clustering method, called Median Evidential C-Means (MECM), which is an extension of median c-means and median fuzzy c-means on the theoretical ...
Liu, Zhun-Ga   +3 more
core   +4 more sources

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

L-Fuzzy Invariant Metric Space

open access: yesCommunications in Advanced Mathematical Sciences, 2018
In this paper, we define L-fuzzy invariant metric space, and generalize some well known results in metric and fuzzy metric space including Uniform continuity theorem and Ascoli-Arzela theorem.
Servet Kütükçü
doaj   +1 more source

Fuzzy de Sitter Space

open access: yes, 2018
We discuss properties of fuzzy de Sitter space defined by means of algebra of the de Sitter group $\mathrm{SO}(1,4)$ in unitary irreducible representations.
Buric, Maja   +2 more
core   +1 more source

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