Results 111 to 120 of about 28,414 (283)

Approximating the Inverse of a Square Matrix with Application in Computation of the Moore-Penrose Inverse

open access: yesJournal of Applied Mathematics, 2014
This paper presents a computational iterative method to find approximate inverses for the inverse of matrices. Analysis of convergence reveals that the method reaches ninth-order convergence.
F. Soleymani, M. Sharifi, S. Shateyi
doaj   +1 more source

A note on the convexity of the Moore–Penrose inverse

open access: yesLinear Algebra and its Applications, 2018
Abstract This note is a sequel to an earlier study (Nordstrom [7] ) on convexity properties of the inverse and Moore–Penrose inverse, in which the following question was raised. Given nonnegative definite matrices A and B with Moore–Penrose inverses A + and B + , respectively, can one show that ( λ A + λ ‾ B
Kenneth Nordström, Kenneth Nordström
openaire   +2 more sources

Parallel computing methods to determine parametric generalized inverse matrices

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2019
The relevancy of the work is conditioned by the necessity to determine effectively the Moore-Penrose generalized parametric inverse matrices which are quite often encountered when solving non-autonomous linear systems of finite equations, optimal control
S. H. Simonyan
doaj   +2 more sources

Some New Algebraic and Topological Properties of the Minkowski Inverse in the Minkowski Space

open access: yesThe Scientific World Journal, 2013
We introduce some new algebraic and topological properties of the Minkowski inverse A⊕ of an arbitrary matrix A∈Mm,n (including singular and rectangular) in a Minkowski space μ.
Hanifa Zekraoui   +2 more
doaj   +1 more source

Generalized Commutators and the Moore-Penrose Inverse

open access: yesThe Electronic Journal of Linear Algebra, 2021
This work studies the kernel of a linear operator associated with the generalized k-fold commutator. Given a set $\mathfrak{A}= \left\{ A_{1}, \ldots ,A_{k} \right\}$ of real $n \times n$ matrices, the commutator is denoted by$[A_{1}| \ldots |A_{k}]$. For a fixed set of matrices $\mathfrak{A}$ we introduce a multilinear skew-symmetric linear operator ...
openaire   +3 more sources

Least Squares Pure Imaginary Solution and Real Solution of the Quaternion Matrix Equation AXB+CXD=E with the Least Norm

open access: yesJournal of Applied Mathematics, 2014
Using the Kronecker product of matrices, the Moore-Penrose generalized inverse, and the complex representation of quaternion matrices, we derive the expressions of least squares solution with the least norm, least squares pure imaginary solution with the
Shi-Fang Yuan
doaj   +1 more source

Line digraphs and the Moore-Penrose inverse

open access: yesLinear Algebra and its Applications, 1981
AbstractVarious characterizations of line digraphs and of Boolean matrices possessing a Moore-Penrose inverse are used to show that a square Boolean matrix has a Moore-Penrose inverse if and only if it is the adjacency matrix of a line digraph. A similar relationship between a nonsquare Boolean matrix and a bipartite graph is also given.
openaire   +2 more sources

An Investigation on Mathematical Modeling of Operators on The Hilbert Domain subjected to The Equality Theory

open access: yesJournal of Applied Science and Engineering
This work begins by presenting the essential and enough circumstances for the presence of the Hermitian solution to equations ΨXΦ + Φ∗YΨ∗ = Ω = Ψ∗XΦ∗+ ΦYΨ in the case where the operators are linear and bounded in a Hilbert space and in terms of the Moore-
Salim Dawood Mohsen   +1 more
doaj   +1 more source

New Bounds for the Davis–Wielandt Radius via the Moore–Penrose Inverse of Bounded Linear Operators

open access: yesAxioms
In this paper, we obtain some new upper bounds involving powers of the Davis–Wielandt radius of bounded linear operators with closed ranges by using the Moore–Penrose inverse.
Xiaomei Dong, Yuzhen Guo, Deyu Wu
doaj   +1 more source

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