Results 1 to 10 of about 44 (42)
A recursive condition for the symmetric nonnegative inverse eigenvalue problem
Revista Integración, 2017 In this paper we present a sufficient ondition and a necessary condition for Symmetri Nonnegative Inverse Eigenvalue Problem. This condition is independent of the existing realizability criteria.
Elvis Ronald Valero +2 more
doaj +3 more sources
Some results on the partial orderings of block matrices
Journal of Inequalities and Applications, 2011 Some results relating to the block matrix partial orderings and the submatrix partial orderings are given. Special attention is paid to the star ordering of a sum of two matrices and the minus ordering of matrix product. Several equivalent conditions for
Liu Xifu, Yang Hu
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Class of finite-dimensional matrices with diagonals that majorize their spectrum
Special Matrices, 2023 We define a special class of finite-dimensional matrices for which the diagonal majorizes the spectrum. This is the first class of matrices known to have this property, although the reverse majorization (i.e., the spectrum majorizing the diagonal) was ...
Uhlmann Jeffrey
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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
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International Journal of Mathematics and Mathematical Sciences, Volume 15, Issue 2, Page 261-266, 1992., 1992 This paper gives a characterization of EPr‐λ‐matrices. Necessary and sufficient conditions are determined for (i) the Moore‐Penrose inverse of an EPr‐λ‐matrix to be an EPr‐λ‐matrix and (ii) Moore‐Penrose inverse of the product of EPr‐λ‐matrices to be an EPr‐λ‐matrix.
Ar. Meenakshi, N. Anandam
wiley +1 more source
Open Mathematics, 2018 In this paper, we introduce the weak group inverse (called as the WG inverse in the present paper) for square complex matrices of an arbitrary index, and give some of its characterizations and properties.
Wang Hongxing, Chen Jianlong
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Characterization of Set of k-g-Inverses [PDF]
, 2011 In this paper, we have obtained the characterization of the set of all k-ginverses of a fuzzy matrix and characterized the set of various k-g-inverses associated with a k-regular fuzzy matrix.
A R Meenakshi, P Jenita
core
A projector oriented approach to the best linear unbiased estimator
General Gauss–Markov model, Ordinary least squares estimator, Oblique projector, Generalized projection operator, 62J05, 62H12, 15A24, 15A57,
Oskar Baksalary, Götz Trenkler
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Una condición recursiva para el problema inverso del autovalor para matrices simétricas no negativas
, 2017 . In this paper we present a sufficient ondition and a necessary condition for Symmetri Nonnegative Inverse Eigenvalue Problem. This condition is independent of the existing realizability criteria.
Lenes, Eber +2 more
core
Weak dual generalized inverse of a dual matrix and its applications. [PDF]
Heliyon, 2023 Li H, Wang H.
europepmc +1 more source