Results 41 to 50 of about 5,662,810 (240)

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, Yolacan Esra, Kiziltunc Hukmi   +2 more
doaj   +1 more source

Structural studies and functional engineering of NanX: an anhydro‐sialic acid transporter from Escherichia coli

FEBS Open Bio, EarlyView.
Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty, Kelsi R. Hall, Zachary D. Tillett, Liam S. Turk, James S. Davies, Michael J. Currie, Hamish G. Brown, Sepideh Valimehr, Peter D. Mace, Andrew E. Whitten, Santosh Panjikar, Eric Hanssen, Rachel A. North, Renwick C.J. Dobson   +13 more
wiley   +1 more source

Generalized compatibility in partially ordered metric spaces [PDF]

Surveys in Mathematics and its Applications, 2016
In this paper, we introduce the notion of generalized compatibility of a pair of mappings F,G:X× X→ X, where (X,d) is a partially ordered metric space.
Hassen Aydi, Manel Jellali
doaj  

Adenosine triphosphate as a modulator of protein interactions and stability

FEBS Open Bio, EarlyView.
ATP is best known as the cell's energy currency, but it also shapes how proteins fold, interact, aggregate and form biomolecular condensates. This review explains the emerging physical principles behind these effects, including weak binding to charged protein regions, magnesium‐dependent behaviour and concentration‐dependent control of protein ...
Shuyuan Tan, Robin Curtis
wiley   +1 more source

Coupled fixed point theorems for mixed -monotone mappings in partially ordered metric spaces [PDF]

, 2013
WOS: 000209290100001In this paper, we prove some coupled coincidence point results for mixed g-monotone mappings in partially ordered metric spaces.
Muzeyyen Sangurlu, SANGURLU SEZEN, MÜZEYYEN, Sangurlu, Muzeyyen, Duran Turkoglu, Turkoglu, Duran   +4 more
core   +2 more sources

Existence of coupled coincidence best proximity point [PDF]

Surveys in Mathematics and its Applications
This work of optimality is engaged with couple coincidence best proximity point. We have developed some optimal results where control functions and non-linear weak inequalities are evident. Further using our results, we establish some fixed point results.
Pulak Konar, Sumit Chandok
doaj  

Coupled fixed point results in cone metric spaces for w-compatible mappings [PDF]

, 2011
In this paper, we introduce the concepts of w-compatible mappings, b-coupled coincidence point and b-common coupled fixed point for mappings F,G : X x X -> X, where (X, d) is a cone metric space.
Samet, B, Bessem Samet, Aydi, H, VETRO, Calogero, Calogero Vetro, Hassen Aydi   +5 more
core   +1 more source

Paramagnetic Rim Lesions and Choroid Plexus Volume at Diagnosis Are Associated With Cognitive Progression Independent of Relapse and MRI Activity in Early Relapsing–Remitting Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Paramagnetic rim lesions (PRLs) and choroid plexus (CP) enlargement reflect smoldering inflammation in multiple sclerosis. Their role in cognitive progression remains unexplored. Eighty‐seven early relapsing–remitting MS patients were enrolled at diagnosis and followed longitudinally.
Stefano Ziccardi, Damiano Marastoni, Agnese Tamanti, Pietro Biasi, Valentina Visani, Annalisa Colombi, Tom A. Fuchs, Monica Sicchieri, Chiara Eccher, Francesco Guarnaccia, Milena Calderone, Valentina Camera, Francesca Benedetta Pizzini, Roberta Magliozzi, Marco Castellaro, Massimiliano Calabrese   +15 more
wiley   +1 more source

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, Muhammad Sarwar, Thabet Abdeljawad   +2 more
doaj   +1 more source

Existence results for a coupled system of nonlinear fractional multi-point boundary value problems at resonance

Journal of Inequalities and Applications, 2018
By using the coincidence degree theory, we present an existence result for a coupled system of nonlinear fractional differential equations with multi-point boundary conditions at resonance.
Yinghan Zhang
doaj   +1 more source