Results 51 to 60 of about 259,932 (331)

Meir-Keeler Type Contraction Mappings in $c_0$-triangular Fuzzy Metric Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
Proving  fixed point theorem in a fuzzy metric space is not possible for  Meir-Keeler contractive mapping. For this, we introduce the notion of $c_0$-triangular fuzzy metric space.
Masoomeh Hezarjaribi
doaj   +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

Extended Rectangular Fuzzy B-metric Space

open access: yes, 2021
In this paper, we introduce an extended rectangular fuzzy b-metric space which generalizes rectangular fuzzy b-metric space and rectangular fuzzy metric space. We show that an extended rectangular fuzzy b-metric space is not Hausdorff.
Salman Furqan, N. Saleem, M. Abbas
semanticscholar   +1 more source

Weakly compatible fixed point theorem in intuitionistic fuzzy metric spaces

open access: yesAIP Advances, 2023
This study presents fundamental theorems, lemmas, and mapping definitions. There are three types of mappings: binary operators, compatible mappings, and sequentially continuous mappings.
C. Yue   +6 more
semanticscholar   +1 more source

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

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

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

Representation of uncertain multichannel digital signal spaces and study of pattern recognition based on metrics and difference values on fuzzy n-cell number spaces [PDF]

open access: yes, 2009
In this paper, we discuss the problem of characterization for uncertain multichannel digital signal spaces, propose using fuzzy n-cell number space to represent uncertain n-channel digital signal space, and put forward a method of constructing such fuzzy
Messenger, Paul   +2 more
core   +1 more source

Diffusion‐based size determination of solute particles: a method adapted for postsynaptic proteins

open access: yesFEBS Open Bio, EarlyView.
We present a diffusion‐based approach for measuring the size of macromolecules and their complexes, and demonstrate its use on postsynaptic proteins. The method requires fluorescein‐labelled protein samples, a microfluidic device that maintains laminar flow for said samples, a microscope recording the emitted fluorescent signals, and an analytic ...
András László Szabó   +7 more
wiley   +1 more source

Some results for multivalued mappings in extended fuzzy b-metric spaces

open access: yesAIMS Mathematics, 2023
In this paper, some fixed point results for multivalued contractions are established in setting G-complete extended fuzzy b-metric spaces. An example is furnished to demonstrate the validity of results.
Samina Batul   +4 more
doaj   +1 more source

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