Results 51 to 60 of about 726,036 (269)
A generalization of reflexive rings [PDF]
Mathematica BohemicaWe introduce a class of rings which is a generalization of reflexive rings and $J$-reversible rings. Let $R$ be a ring with identity and $J(R)$ denote the Jacobson radical of $R$.
Mete Burak Çalcı +2 more
doaj +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Journal of Inequalities and Applications, 2021 In this article, we investigate the notion of the pre-quasi norm on a generalized Cesàro backward difference sequence space of non-absolute type ( Ξ ( Δ , r ) ) ψ $(\Xi (\Delta,r) )_{\psi }$ under definite function ψ.
Awad A. Bakery, Om Kalthum S. K. Mohamed
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The newfound relationship between extrachromosomal DNAs and excised signal circles
FEBS Letters, EarlyView.Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley +1 more source
International Journal of Mathematics and Mathematical Sciences, 2006 We investigate the question whether the p.q.-Baer center of a ring R can be extended to R. We give several counterexamples to this question and consider some conditions under which the answer may be affirmative.
Tai Keun Kwak
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Cell wall target fragment discovery using a low‐cost, minimal fragment library
FEBS Letters, EarlyView.LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan +5 more
wiley +1 more source
Universality in Graph Properties with Degree Restrictions
Discussiones Mathematicae Graph Theory, 2013 Rado constructed a (simple) denumerable graph R with the positive integers as vertex set with the following edges: For given m and n with m < n, m is adjacent to n if n has a 1 in the m’th position of its binary expansion.
Broere Izak +2 more
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Emerging role of ARHGAP29 in melanoma cell phenotype switching
Molecular Oncology, EarlyView.This study gives first insights into the role of ARHGAP29 in malignant melanoma. ARHGAP29 was revealed to be connected to tumor cell plasticity, promoting a mesenchymal‐like, invasive phenotype and driving tumor progression. Further, it modulates cell spreading by influencing RhoA/ROCK signaling and affects SMAD2 activity. Rho GTPase‐activating protein
Beatrice Charlotte Tröster +3 more
wiley +1 more source
The Fixed Point Property of a Banach Algebra Generated by an Element with Infinite Spectrum
Journal of Function Spaces, 2018 A Banach space X is said to have the fixed point property if for each nonexpansive mapping T:E→E on a bounded closed convex subset E of X has a fixed point. Let X be an infinite dimensional unital Abelian complex Banach algebra satisfying the following: (
P. Thongin, W. Fupinwong
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Characterisation and properties of r-Toeplitz matrices
Journal of Mathematical Analysis and Applications, 1987 If a block matrix \(B=[B_{ij}]\) of order \(n=mr\) whose elements are matrices \(B_{ij}\) of order r is a block-Toeplitz matrix, i.e. if \(B_{i+1,j+1}=B_{ij}\) \((i,j=1,...,m-1)\), then for the individual elements \(b_{ij}\) of B we have \(b_{i+r,j+r}=b_{ij}\) \((i,j=1,2,...,(m-1)r)\).
Gover, M.J.C, Barnett, S
openaire +2 more sources