Results 11 to 20 of about 232 (79)

A Hermitian canonical form for complex matrices under consimilarity

open access: closedLinear Algebra and its Applications, 1990
An algorithm is described that yields a Hermitian canonical form for complex matrices under consimilarity. It consists of three blocks corresponding to the nonnegative, negative and nonreal eigenvalues of \(A\bar A\). A similar algorithm produces a real canonical form (for complex matrices under consimilarity).
Yoopyo Hong
semanticscholar   +4 more sources

A Study on Commutative Elliptic Octonion Matrices

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
In this study, firstly notions of similarity and consimilarity are given for commutative elliptic octonion matrices. Then the Kalman-Yakubovich s-conjugate equation is solved for the first conjugate of commutative elliptic octonions. Also, the notions of
Sürekçi Arzu Cihan   +1 more
doaj   +2 more sources

On the singular value decomposition of (skew-)involutory and (skew-)coninvolutory matrices

open access: yesSpecial Matrices, 2020
The singular values σ > 1 of an n × n involutory matrix A appear in pairs (σ, 1σ{1 \over \sigma }). Their left and right singular vectors are closely connected. The case of singular values σ = 1 is discussed in detail. These singular values may appear in
Faßbender Heike, Halwaß Martin
doaj   +2 more sources

Some Equivalence Relations and Results over the Commutative Quaternions and Their Matrices

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
In this paper, we give some equivalence relations and results over the commutative quaternions and their matrices. In this sense, consimilarity, semisimilarity, and consemisimilarity over the commutative quaternion algebra and commutative quaternion ...
Kosal Hidayet Huda, Tosun Murat
doaj   +2 more sources

The Division Ring Over Conjugate Product

open access: yesIEEE Access, 2019
In this paper, we investigate the rational fractions in the framework of conjugate product and establish a division ring. Some conjugate properties on the proposed division ring are obtained, and the similarity and consimilarity properties are ...
Ai-Guo Wu, Hui-Zhen Wang, Yu Teng
doaj   +2 more sources

Regularizing algorithm for mixed matrix pencils [PDF]

open access: yes, 2017
P. Van Dooren (1979) constructed an algorithm for computing all singular summands of Kronecker’s canonical form of a matrix pencil. His algorithm uses only unitary transformations, which improves its numerical stability.
T. Klymchuk
semanticscholar   +5 more sources

Consimilarity of Split Quaternion Matrices and a Solution of the Split Quaternion Matrix Equation X-AX_B=C

open access: green, 2014
In this paper, the consimilarity of complex matrices is generalized for the split quaternions. In this regard, coneigenvalue and coneigenvector are defined for split quaternion matrices. Also, the existence of solution to the split quaternion matrix equation X-AXB = C is characterized and the solution of the equation in the explicit form are derived ...
Hidayet Hüda Kösal   +2 more
openalex   +3 more sources

On (con)similarities and congruences between A and A^*, A^T or A

open access: yesLinear Algebra and its Applications, 2008
The complex consimilarity of complex matrices defined by \(\overline{P}^{-1} AP= B\), where \(A,B,P\in \mathbb{C}^{n\times n}\) and \(P\) is invertible, is not extensible to the quaternions since \(\overline{AB}\neq \overline{AB}\) in general. Thus, given quaternion matrices \(A,B\in \mathbb{H}^{n\times n}\), the author defines the \(j\)-conjugate of \(
J. Vermeer
semanticscholar   +3 more sources

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