Results 11 to 20 of about 1,095,836 (281)

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

Journal of Inequalities and Applications, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhao, Jianxing, Wang, Feng, Sang, Caili
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Proofs of two conjectures of Kenyon and Wilson on Dyck tilings [PDF]

Discrete Mathematics & Theoretical Computer Science, 2012
Recently, Kenyon and Wilson introduced a certain matrix M in order to compute pairing probabilities of what they call the double-dimer model. They showed that the absolute value of each entry of the inverse matrix $M^-1$ is equal to the number of certain
Jang Soo Kim
doaj   +1 more source

New inequalities for the Hadamard product of an M-matrix and an inverse M-matrix [PDF]

Journal of Inequalities and Applications, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhao, Jianxing, Sang, Caili, Wang, Feng
openaire   +1 more source

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

Journal of Inequalities and Applications, 2013
Abstract Let A and B be nonsingular M-matrices. Some new lower bounds on the minimum eigenvalue q ( A ∘ B − 1 )
Zhou, Duanmei, Chen, Guoliang, Wu, Guoxing, Zhang, Xiangyun   +3 more
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The Multiplicative Inverse Eigenvalue Problem over an Algebraically Closed Field [PDF]

, 2000
Let $M$ be a square matrix and let $p(t)$ be a monic polynomial of degree $n$. Let $Z$ be a set of $n\times n$ matrices. The multiplicative inverse eigenvalue problem asks for the construction of a matrix in $Z$ such that the product matrix $MZ$ has ...
Joachim Rosenthal, Macdonald I., Xiaochang Wang, Xu Shu‐fang   +3 more
core   +3 more sources

The core inverse and constrained matrix approximation problem

Open Mathematics, 2020
In this article, we study the constrained matrix approximation problem in the Frobenius norm by using the core inverse:||Mx−b||F=minsubjecttox∈ℛ(M),||Mx-b|{|}_{F}=\hspace{.25em}\min \hspace{1em}\text{subject}\hspace{.25em}\text{to}\hspace{1em}x\in ...
Wang Hongxing, Zhang Xiaoyan
doaj   +1 more source

Neutrino Mass Hierarchies in a Mass Matrix Form Versus its Inverse Form [PDF]

, 2008
A neutrino mass matrix model M_\nu with M_\nu^T =M_\nu and a model with its inverse matrix form \widetilde{M}_\nu = m_0^2 (M_\nu^*)^{-1} can be diagonalized by the same mixing matrix U_\nu.
Koide, Yoshio
core   +1 more source

Trading off 1-norm and sparsity against rank for linear models using mathematical optimization: 1-norm minimizing partially reflexive ah-symmetric generalized inverses

Open Journal of Mathematical Optimization, 2021
The M-P (Moore–Penrose) pseudoinverse has as a key application the computation of least-squares solutions of inconsistent systems of linear equations. Irrespective of whether a given input matrix is sparse, its M-P pseudoinverse can be dense, potentially
Fampa, Marcia, Lee, Jon, Ponte, Gabriel
doaj   +1 more source

Completions of inverse M-matrix patterns

Linear Algebra and its Applications, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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M-matrix generalized inverses of M-matrices

Linear Algebra and its Applications, 1997
The condition when the group inverse of the associated singular irreducible \(M\)-matrix corresponding to a nonnegative, irreducible and stochastic matrix will be an \(M\)-matrix is that this matrix lies in a small wedge about a rank one nonnegative matrix.
Chen, Yonghong, Neumann, M.
openaire   +2 more sources