Results 71 to 80 of about 1,095,836 (281)

Some Results on the Drazin Inverse of a Modified Matrix with New Conditions

International Journal of Analysis and Applications, 2014
In this article, we consider representations of the Drazin inverse of a modified matrix M = A−CDdB with the generalized Schur complement Z = D − BAdC under different conditions given in recent articles on the subject.
Abdul Shakoor, Hu Yang, Ilyas Ali
doaj   +2 more sources

On the M-matrix inverse problem for singular and symmetric Jacobi matrices

The Electronic Journal of Linear Algebra, 2012
Summary: A well-known property of an irreducible singular \(M\)-matrix is that it has a generalized inverse which is non-negative, but this is not always true for any generalized inverse. The authors have characterized when the Moore-Penrose inverse of a symmetric, singular, irreducible and tridiagonal \(M\)-matrix is itself an \(M\)-matrix.
Carmona, Angeles, Encinas, Andres, Mitjana, Margarida   +2 more
openaire   +3 more sources

Some inequalities for the minimum eigenvalue of the Hadamard product of an M-matrix and its inverse [PDF]

Journal of Inequalities and Applications, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cheng, Guanghui, Tan, Qin, Wang, Zhuande
openaire   +1 more source

Unraveling the Molecular Mechanisms of Glioma Recurrence: A Study Integrating Single‐Cell and Spatial Transcriptomics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Glioma recurrence severely impacts patient prognosis, with current treatments showing limited efficacy. Traditional methods struggle to analyze recurrence mechanisms due to challenges in assessing tumor heterogeneity, spatial dynamics, and gene networks.
Lei Qiu, Yinjiao Fei, Jiaxuan Ding, Kexin Shi, Jinyan Luo, Yuchen Zhu, Xingjian Sun, Gefei Jiang, Yuandong Cao, Weilin Xu, Shu Zhou   +10 more
wiley   +1 more source

Maximal zero textures in Linear and Inverse seesaw

Physics Letters B, 2016
We investigate Linear and Inverse seesaw mechanisms with maximal zero textures of the constituent matrices subjected to the assumption of non-zero eigenvalues for the neutrino mass matrix mν and charged lepton mass matrix me.
Roopam Sinha, Rome Samanta, Ambar Ghosal
doaj   +1 more source

CX3CL1 in Early Detection of Alzheimer's Disease: Plasma Dynamics Across Age and Disease Stages

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Backgrounds Alzheimer's disease (AD) is characterized by amyloid‐beta plaques, tau tangles, and neuroinflammation. C‐X3‐C motif chemokine ligand 1 (CX3CL1, also known as fractalkine), a neuroimmune chemokine implicated in AD pathogenesis, shows inconsistent alterations in plasma/serum across studies.
Ling Wang, Yujie Liu, Fei Li, Xuelin Li, Lanlan Li, Jie Zhang, Yali Xu   +6 more
wiley   +1 more source

The dynamical U(n) quantum group

International Journal of Mathematics and Mathematical Sciences, 2006
We study the dynamical analogue of the matrix algebra M(n), constructed from a dynamical R-matrix given by Etingof and Varchenko. A left and a right corepresentation of this algebra, which can be seen as analogues of the exterior algebra representation ...
Erik Koelink, Yvette Van Norden
doaj   +1 more source

Comparative Effectiveness and Safety of Inebilizumab Versus Rituximab in AQP4‐IgG‐Positive NMOSD

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Rituximab (anti‐CD20, RTX) and inebilizumab (anti‐CD19, INE) represent B‐cell‐depleting therapies used for aquaporin‐4 antibody‐positive (AQP4‐IgG+) neuromyelitis optica spectrum disorder (NMOSD); however, direct comparative evidence remains limited.
Jie Lin, Binbin Xue, Dewei Xie, Jia Li, Juyuan Pan, Lanbing Zhu, Qiaowen Tong, Jing Lin, Ruofan Zhu, Xu Zhang, Junhui Xia, Xiang Li   +11 more
wiley   +1 more source

Inverse M-matrix completions of patterns omitting some diagonal positions

Linear Algebra and its Applications, 2000
Let \(N= \{1,\dots, n\}\). The author investigates the following question: Which subsets \(Q\) of \(N\times N\) have the property that whenever \(a_{ij}\) for \((i,j)\in Q\) form a ``partial inverse \(M\)-matrix'' (i.e., \(a_{ij}\geq 0\) and if \(L\times L\subseteq Q\), then the inverse of \(\{a_{ij}:i, j\in L\}\) is an \(M\)-matrix), \(a_{ij}\) can be
openaire   +1 more source

Perceived Impacts and Predictors of Cannabis Products used by Rheumatology Patients in Alberta: A Multivariable Analysis of Cross‐sectional Survey Data

Arthritis Care &Research, Accepted Article.
Objective This study aimed to characterize cannabis product choices (cannabinoid content and formulation) among rheumatology patients, and their associations with patient factors, patient reported perceived side effects and positive impacts. Methods An online survey (delivered from March to November 2022) was distributed by Alberta Health Services to ...
Susan Zhang, Samuel A.J. Lowe, Frank Sun, Allyson Jones, Tarek Turk, Joanne Olson, Pauline Paul, Shelby Yamamoto, Linda Kolewaski, Elaine Yacyshyn, Cheryl A. Sadowski   +10 more
wiley   +1 more source