Results 121 to 130 of about 1,550,218 (322)
Hybrid Coupled Fixed Point Theorems in Metric Spaces with Applications
Journal of Function Spaces, 2019 In this manuscript, using CLR property, coupled coincidence and common coupled fixed point results for two-hybrid pairs satisfying (F,φ)- contraction are demonstrated.
Muhammad Shoaib +2 more
doaj +1 more source
Axioms, 2022 Asymptotically coupled coincidence points and asymptotically coupled fixed points in fuzzy semi-metric spaces are studied in this paper. The fuzzy semi-metric space is taken into account, which lacks symmetric conditions. In this case, the desired results are separately investigated based on four different types of triangle inequalities. The uniqueness
openaire +2 more sources
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Coupled Fixed Point Theorems for Weak Contraction Mappings under F-Invariant Set
Abstract and Applied Analysis, 2012 We extend the recent results of the coupled fixed point theorems of Cho et al. (2012) by weakening the concept of the mixed monotone property. We also give some examples of a nonlinear contraction mapping, which is not applied to the existence of the ...
Wutiphol Sintunavarat +2 more
doaj +1 more source
Positive solutions of fractional integral equations by the technique of measure of noncompactness
Journal of Inequalities and Applications, 2017 In the present study, we work on the problem of the existence of positive solutions of fractional integral equations by means of measures of noncompactness in association with Darbo’s fixed point theorem. To achieve the goal, we first establish new fixed
Hemant Kumar Nashine +3 more
doaj +1 more source
FEBS Letters, EarlyView.This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel +13 more
wiley +1 more source
A Generalization of Fixed-Point Theorems for Mappings with a Contractive Iterate
MathematicsIn this paper, a generalization of fixed-point mappings with an iterate at a point in complete metric spaces is shown, using the notions of T-closed sets and i-P-regularity/d-P-regularity, proving conditions for the existence and uniqueness of the fixed ...
Valentin Georgiev, Boyan Zlatanov
doaj +1 more source
Coupled fixed point theorems in complete metric spaces endowed with a directed graph and application
Open Mathematics, 2017 The purpose of this paper is to present some existence results for coupled fixed point of a (φ,ψ) —contractive condition for mixed monotone operators in metric spaces endowed with a directed graph.
Kir Mehmet +2 more
doaj +1 more source
CLRg Property for Coupled Fixed Point Theorems in Fuzzy Metric Spaces [PDF]
, 2012 Muhammad Alamgir Khan, Sumitra
openalex +1 more source
Existence of Strong Coupled Fixed Points for Cyclic Coupled Ciric-Type Mappings [PDF]
Journal of Operators, 2014 In this short communication the concept of cyclic coupled Kannan-type contractions is generalized using a certain class of Ciric-type mappings.
openaire +1 more source