Results 71 to 80 of about 165,987,094 (304)
Characterizing Variability of Modular Brain Connectivity with Constrained Principal Component Analysis. [PDF]
PLoS ONE, 2016 Characterizing the variability of resting-state functional brain connectivity across subjects and/or over time has recently attracted much attention.
Jun-Ichiro Hirayama +4 more
doaj +1 more source
Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions
FEBS Letters, EarlyView.The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang +4 more
wiley +1 more source
Factorization of block matrices [PDF]
, 1985 An LU-type factorization theorem due to Elsner and to Gohberg and Goldberg is generalized to block matrices. One form of the general factorization takes the form LMU, where L is block lower-triangular, U is block upper-triangular, and M is a ...
Gohberg, Israel +2 more
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Accurate bidiagonal factorization of quantum Hilbert matrices [PDF]
, 2023 A bidiagonal decomposition of quantum Hilbert matrices is obtained and the total positivity of these matrices is proved. This factorization is used to get accurate algebraic computations with these matrices. The numerical errors due to imprecise computer
Rubio, B., Mainar, E., Peña, J.M.
core +1 more source
Bidiagonal Factorizations of Filbert and Lilbert Matrices
AxiomsExtensions of Filbert and Lilbert matrices are addressed in this work. They are reciprocal Hankel matrices based on Fibonacci and Lucas numbers, respectively, and both are related to Hilbert matrices.
Yasmina Khiar +4 more
doaj +1 more source
On theLU factorization ofM-matrices
Numerische Mathematik, 1981 In this paper, we give in Theorem 1 a characterization, based on graph theory, of when anM-matrixA admits anLU factorization intoM-matrices, whereL is a nonsingular lower triangularM-matrix andU is an upper triangularM-matrix. This result generalizes earlier factorization results of Fiedler and Ptak (1962) and Kuo (1977). As a consequence of Theorem 1,
VARGA, R.S., Cai, D.Y.
openaire +2 more sources
An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes
FEBS Letters, EarlyView.GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg +14 more
wiley +1 more source
On Computing Normalized Coprime Factorizations of Rational Matrices [PDF]
, 1997 We propose a new computational approach based on descriptor state space algorithms to compute normalized coprime factorizations of rational ...
A. Varga, Varga, A.
core
Evaluation of Partial Factorization for Reduction of Finite Element Matrices
Engineering Transactions, 2017 In this paper, we present the concept of Partial Factorization [1] And discuss its possible applications to the Finite Element method. We consider: (1) reduction of the element tangent matrix, which is particularly important for mixed/enhanced elements ...
Pawel JARZĘBSKI, Krzysztof WIŚNIEWSKI
doaj +1 more source
On the matrix of rank one over a UFD [PDF]
Journal of Hyperstructures, 2016 In this paper we characterize all matrices of rank one over a unique factorization domain (UFD). Also we find the Rmodule generated by the rows and the R-module generated by the columns of a matrix of rank one and assert some properties of them.
Somayeh Hadjirezaei, Somayeh Karimzadeh
doaj +1 more source