Results 21 to 30 of about 19,797,232 (311)

The effective potential of an M-matrix [PDF]

open access: yesJournal of Mathematical Physics, 2021
In the presence of a confining potential V, the eigenfunctions of a continuous Schrödinger operator −Δ + V decay exponentially with the rate governed by the part of V, which is above the corresponding eigenvalue; this can be quantified by a method of Agmon.
Marcel Filoche   +2 more
openaire   +3 more sources

Lipschitz Extensions to Finitely Many Points

open access: yesAnalysis and Geometry in Metric Spaces, 2018
We consider Lipschitz maps with values in quasi-metric spaces and extend such maps to finitely many points. We prove that in this context every 1-Lipschitz map admits an extension such that its Lipschitz constant is bounded from above by the number of ...
Basso Giuliano
doaj   +1 more source

The symmetric M-matrix and symmetric inverse M-matrix completion problems

open access: yesLinear Algebra and its Applications, 2002
A partial matrix is a matrix in which some entries are specified and others are not. The completion problem for partial matrices consists in choosing values for the unspecified entries in such a way as the completed matrix belongs to a particular class of matrices. A partial \(n \times n\) matrix specifies a pattern (i.e.
openaire   +5 more sources

Some new bounds of the minimum eigenvalue for the Hadamard product of an M-matrix and an inverse M-matrix

open access: yesOpen Mathematics, 2016
Some convergent sequences of the lower bounds of the minimum eigenvalue for the Hadamard product of a nonsingular M-matrix B and the inverse of a nonsingular M-matrix A are given by using Brauer’s theorem.
Zhao Jianxing, Sang Caili
doaj   +1 more source

miR-200b restrains EMT and aggressiveness and regulates matrix composition depending on ER status and signaling in mammary cancer

open access: yesMatrix Biology Plus, 2020
Secreted microRNAs (miRNAs) reside in a complex regulatory network with extracellular matrix (ECM) macromolecules, which affect cell-cell communication, therefore miRNA expression highlights its significance in several aspects of human diseases ...
Zoi Piperigkou   +4 more
doaj   +1 more source

ALGORITHMS FOR THE RICCATI EQUATION WITH A NONSINGULAR M-MATRIX

open access: yesAnnals of the Academy of Romanian Scientists Series on Mathematics and Its Application, 2023
We consider different algorithms with linear rate of convergence for computing the minimal nonnegative solution of M-matrix algebraic Riccati equation. The performance of the considered algorithms are illustrated on numerical examples.
Ivanov, Ivelin, Baeva, Neli
openaire   +1 more source

Biomechanics of Borrelia burgdorferi Vascular Interactions

open access: yesCell Reports, 2016
Systemic dissemination of microbes is critical for progression of many infectious diseases and is associated with most mortality due to bacterial infection.
Rhodaba Ebady   +10 more
doaj   +1 more source

Color critical hypergraphs and forbidden configurations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
The present paper connects sharpenings of Sauer's bound on forbidden configurations with color critical hypergraphs. We define a matrix to be \emphsimple if it is a $(0,1)-matrix$ with no repeated columns.
Richard Anstee   +3 more
doaj   +1 more source

A faster algorithm for identification of an M-Matrix

open access: yesANZIAM Journal, 2005
Summary: \(M\)-matrices are important in the consideration of rates of convergence of iterative methods for solving large systems of equations and are applicable in areas such as input-output systems in economic modelling, queuing theory, and engineering. The usual definition of an \(M\)-matrix has, among other requirements, that it must be nonsingular
Wood, R. J., O'Neill, M. J.
openaire   +3 more sources

New bounds for the minimum eigenvalue of M-matrices

open access: yesOpen Mathematics, 2016
Some new bounds for the minimum eigenvalue of M-matrices are obtained. These inequalities improve existing results, and the estimating formulas are easier to calculate since they only depend on the entries of matrices.
Wang Feng, Sun Deshu
doaj   +1 more source

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