Results 71 to 80 of about 200,688 (282)

Coupled fixed point theorems for (α, φ)g-contractive type mappings in partially ordered G-metric spaces

open access: yesOpen Mathematics, 2015
In this paper, we introduce a new concept of (α, φ)g-contractive type mappings and establish coupled coincidence and coupled common fixed point theorems for such mappings in partially ordered G-metric spaces.
Chen Jianhua, Huang Xianjiu
doaj   +1 more source

Existence of a common solution to systems of integral equations via fixed point results

open access: yesOpen Mathematics, 2020
The goal of this article is to prove some coupled common fixed point results by using weakly increasing mappings with two variables. Several examples indicating the usability are provided. Also, we use the results obtained to demonstrate the existence of
Işık Hüseyin, Park Choonkil
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS 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

Some Common Coupled Fixed Point Theorems for Occasionally Weakly Compatible Maps in Complex Valued Metric Spaces [PDF]

open access: yes, 2014
In this paper we establish some common coupled fixed point theorems for two pair of occasionally weakly compatible mappings satisfying a generalize contractive condition in complex valued metric space. The proved results generalize and extend some of the
Shukla, Sandhya, Nigam, Priyanka
core   +1 more source

Coincidence point theorems for $\varphi$-$\psi$-contraction mappings in metric spaces involving a graph

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2016
Some new coupled coincidence and coupled common fixed point theorems for $\varphi$-$\psi$-contraction mappings are established. We have also an application to some integral system to support the results.
E. Yolacan, H. Kiziltunc, M. Kir
doaj   +1 more source

On some common coupled fixed point results in rectangular b-metric spaces

open access: yesThe Journal of Nonlinear Sciences and Applications, 2017
Summary: In this paper, by using the \(w\)-compatible conditions of mapping pair, we discuss the existence and uniqueness problem of the common coupled fixed point for mappings defined on a set equipped with two rectangular \(b\)-metrics. Some new common coupled fixed point theorems are obtained.
openaire   +2 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

SOME COUPLED COINCIDENCE AND COMMON COUPLED FIXED POINT THEOREMS IN COMPLEX-VALUED METRIC SPACES [PDF]

open access: yes, 2015
The aim of this paper is to obtain a coupled coincidence point theorem and a common coupled fixed point theorem of contractive type mappings involving rational expressions in the frame work of a complex-valued metric spaces.
Khan, M S, Jhade, Pankaj Kumar
core  

Promotion of Coupled Fixed Point Theorem in Partially Ordered Metric Spaces

open access: yes四川大学学报. 自然科学版, 2017
In this paper, we first establish new coupled coincidence and coupled common fixed point theorems in partially ordered metric spaces, and then apply the new coupled common fixed point theorem to prove the existence and uniqueness of solutions to ...
MA Jin, YANG He
doaj  

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