Results 71 to 80 of about 2,436,536 (336)
Continuous Selections of the Inverse Numerical Range Map
, 2015 For a complex $n$-by-$n$ matrix $A$, the numerical range $F(A)$ is the range of the map $f_A(x) = x^*A x$ acting on the unit sphere in $\C^n$. We ask whether the multivalued inverse numerical range map $f_A^{-1}$ has a continuous single-valued selection ...
Lins, Brian, Parihar, Parth
core +1 more source
Rad27/FEN1 prevents accumulation of Okazaki fragments and ribosomal DNA copy number changes
FEBS Letters, EarlyView.The budding yeast Rad27 is a structure‐specific endonuclease. Here, the authors reveal that Rad27 is crucial for maintaining the stability of the ribosomal RNA gene (rDNA) region. Rad27 deficiency leads to the accumulation of Okazaki fragments and changes in rDNA copy number.
Tsugumi Yamaji +3 more
wiley +1 more source
On numerical range of sp(2n, C)
Special Matrices, 2016 In this paper we studied the classical numerical range of matrices in sp(2n, C). We obtained some result on the relationship between the numerical range of a matrix in and that of its diagonal block, the singular values of its off-diagonal block A2.
Yan Wen, Tao Jicheng, Lu Zhao
doaj +1 more source
, 2008 Results on matrix canonical forms are used to give a complete description of the higher rank numerical range of matrices arising from the study of quantum error correction.
Li, Chi-Kwong, Sze, Nung-Sing
core +1 more source
NUMERICAL RANGE AND PONCELET PROPERTY
Taiwanese Journal of Mathematics, 2003 This expository article gives an account of the recent developments on the Poncelet property for numerical ranges of the compressions of the shift~\(S(\phi)\). It can be considered as an updated and more advanced edition of the recent expository article published by \textit{P. Y. Wei} [Am. Math. Mon. 107, No. 6, 528--540 (2000; Zbl 0985.51016)].
Gau, Hwa-Long, Wu, Pei Yuan
openaire +2 more sources
Numerical ranges of the product of operators [PDF]
Operators and Matrices, 2017 We study containment regions of the numerical range of the product of operators $A$ and $B$ such that $W(A)$ and $W(B)$ are line segments. It is shown that the containment region is equal to the convex hull of elliptical disks determined by the spectrum of $AB$, and conditions on $A$ and $B$ for the set equality holding are obtained.
Du, Hongke +4 more
openaire +3 more sources
Mitochondrial fatty acid oxidation is stimulated by red light irradiation
FEBS Letters, EarlyView.Light at different wavelengths has distinct effects on keratinocyte viability and metabolism. UVA light abrogates metabolic fluxes. Blue and green light have no effect on metabolic fluxes, while red light enhanced oxidative phosphorylation by promoting fatty acid oxidation. Keratinocytes are the primary constituents of sunlight‐exposed epidermis.
Manuel Alejandro Herrera +4 more
wiley +1 more source
Norm Properties of $S$-Universal Operators
Communications in Advanced Mathematical Sciences, 2020 We investigate the norm properties of a generalized derivation on a norm ideal $\mathcal{J}$ in $\mathcal{B}(H)$, the algebra of bounded linear operators on a Hilbert space $H$.
Joshua Muholo, Job Bonyo
doaj
Numerical study of the dynamics of some long range spin glass models
, 2015 We present results of a Monte Carlo study of the equilibrium dynamics of the one dimensional long-range Ising spin glass model. By tuning a parameter $\sigma$, this model interpolates between the mean field Sherrington-Kirkpatrick model and a proxy of ...
Billoire, Alain
core +2 more sources
The role of fibroblast growth factors in cell and cancer metabolism
FEBS Letters, EarlyView.Fibroblast growth factor (FGF) signaling regulates crucial signaling cascades that promote cell proliferation, survival, and metabolism. Therefore, FGFs and their receptors are often dysregulated in human diseases, including cancer, to sustain proliferation and rewire metabolism.
Jessica Price, Chiara Francavilla
wiley +1 more source