Results 11 to 20 of about 252 (45)

Determinantal inequalities of Hua-Marcus-Zhang type for quaternion matrices

open access: yesOpen Mathematics, 2021
In this paper, the authors extend determinantal inequalities of the Hua-Marcus-Zhang type for positive definite matrices to the corresponding ones for quaternion matrices.
Hong Yan, Qi Feng
doaj   +1 more source

Monomial codes seen as invariant subspaces

open access: yesOpen Mathematics, 2017
It is well known that cyclic codes are very useful because of their applications, since they are not computationally expensive and encoding can be easily implemented. The relationship between cyclic codes and invariant subspaces is also well known.
García-Planas María Isabel   +2 more
doaj   +1 more source

Orthogonality for (0, −1) tropical normal matrices

open access: yesSpecial Matrices, 2020
We study pairs of mutually orthogonal normal matrices with respect to tropical multiplication. Minimal orthogonal pairs are characterized. The diameter and girth of three graphs arising from the orthogonality equivalence relation are computed.
Bakhadly Bakhad   +2 more
doaj   +1 more source

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   +1 more source

Some properties of complex quaternion and complex split quaternion matrices

open access: yes, 2019
The aim of this study is to investigate some properties of complex quaternion and complex split quaternion matrices. To verify this, we use 2x2 complex matrix representation of these quaternions.
Y. Alagöz, G. Özyurt
semanticscholar   +1 more source

On the summation of fractional powers of matrices over finite fields

open access: yes, 2016
In this paper, we investigate the summation of fractional powers of matrices over finite fields. More specifically, we show how a fractional power of a matrix of a linear transform over a finite field can be obtained from the linear combination of some ...
Juliano B. Lima, R. Souza
semanticscholar   +1 more source

Similarity relations and exponential of dual-generalized complex matrices

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2023
In this study, taking into account the fundamental properties of dual-generalized complex (DGC) matrices, various types of similarity relations are introduced considering coneigenvalues/coneigenvectors via di erent conjugates.
Gürses Nurten, Şentürk Gülsüm Yeliz
doaj   +1 more source

Negative clean rings

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
A ring is called negative clean if the negative (i.e., the additive inverse) of each clean element is also clean. Clean rings are negative clean.
Călugăreanu Grigore, Pop Horia F.
doaj   +1 more source

Twisted immanant and matrices with anticommuting entries

open access: yes, 2015
This article gives a new matrix function named "twisted immanant," which can be regarded as an analogue of the immanant. This is defined for each self-conjugate partition through a "twisted" analogue of the irreducible character of the symmetric group ...
Itoh, Minoru
core   +1 more source

Enumeration of Linear Transformation Shift Registers

open access: yes, 2013
We consider the problem of counting the number of linear transformation shift registers (TSRs) of a given order over a finite field. We derive explicit formulae for the number of irreducible TSRs of order two.
Ram, Samrith
core   +1 more source

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