Results 41 to 50 of about 597,655 (285)

A common fixed point result for two pairs of maps in b-metric spaces without (E.A.)-property [PDF]

open access: yesMathematica Moravica, 2019
In this paper, we investigate a common fixed point problem for two pairs {f, S} and {g, T} of weakly compatible selfmaps of a complete b-metric (X, d; s), satisfying a contractive condition of Ćirić type.
Akkouchi Mohamed
doaj  

Remarks on recent fixed point theorems for compatible maps

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
Following Gerald Jungck's formulation of compatibility of maps, several interesting fixed point theorems for such maps have been obtained, wherein at least one of the maps is continuous.
S. L. Singh, V. Chadha, S. N. Mishra
doaj   +1 more source

Moment maps, symplectomorphism groups and compatible complex structures

open access: yes, 2005
In this paper we apply Donaldson's general moment map framework for the action of a symplectomorphism group on the corresponding space of compatible (almost) complex structures to the case of rational ruled surfaces.
Abreu, Miguel   +2 more
core   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

Common fixed point theorems for compatible self-maps of Hausdorff topological spaces

open access: yesFixed Point Theory and Applications, 2005
The concept of proper orbits of a map g is introduced and results of the following type are obtained. If a continuous self-map g of a Hausdorff topological space X has relatively compact proper orbits, then g has a fixed point.
Gerald F. Jungck
doaj   +2 more sources

Trace identities and their semiclassical implications

open access: yes, 1999
The compatibility of the semiclassical quantization of area-preserving maps with some exact identities which follow from the unitarity of the quantum evolution operator is discussed.
Berkolaiko G   +19 more
core   +2 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Fixed Points of Weakly Compatible Maps Satisfying a General Contractive Condition of Integral Type

open access: yesFixed Point Theory and Applications, 2007
We prove a fixed point theorem for weakly compatible maps satisfying a general contractive condition of integral type.
Ishak Altun   +2 more
doaj   +2 more sources

Common fixed point theorems for hybrid pairs of mappings using implicit relations [PDF]

open access: yesMathematica Moravica, 2014
In this paper, we prove coincidence and fixed point theorems for two hybrid pairs of single valued and multivalued mappings on noncomplete metric spaces. We prove our results without using conditions of compatibility and continuity of mappings.
Deshpande Bhavana, Pathak Rohit
doaj  

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

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