Results 1 to 10 of about 1,700,750 (206)

All Solutions of the Yang–Baxter-Like Matrix Equation for Nilpotent Matrices of Index Two

open access: yesComplexity, 2020
Let A be a nilpotent matrix of index two, and consider the Yang–Baxter-like matrix equation AXA=XAX. We first obtain a system of matrix equations of smaller sizes to find all the solutions of the original matrix equation.
Duanmei Zhou, Jiawen Ding
doaj   +2 more sources

Index rank-$k$ numerical range of matrices [PDF]

open access: yesJournal of Mahani Mathematical Research, 2023
We introduce the $\alpha-$higher rank form of the matrix numerical range, which is a special case of the matrix polynomial version of higher rank numerical range.
Sharifeh Rezagholi, Rouholah Yasini
doaj   +1 more source

On the idempotent and nilpotent sum numbers of matrices over certain indecomposable rings and related concepts

open access: yesМатематичні Студії, 2021
We investigate a few special decompositions in arbitrary rings and matrix rings over indecomposable rings into nilpotent and idempotent elements. Moreover, we also define and study the nilpotent sum trace number of nilpotent matrices over an arbitrary ...
P.V. Danchev
doaj   +1 more source

Study Some Properties of a Circulant Matrix

open access: yesTikrit Journal of Pure Science, 2023
The aim of this paper is to study the properties of idempotent, nilpotent and stability to a circulant matrix  which generated by the first row, finally we showed the relation between this properties with eigenvalues of this matrix.
Akram Salim Mohammed
doaj   +1 more source

Reduction of system of partial derivatives with nilpotent matrix

open access: yesLietuvos Matematikos Rinkinys, 2000
In this paper we explain the method of squaring of the partial derivatives system with nilpotent matrix into the system with simpler matrix next to the solving function.
Donatas Jurgaitis   +1 more
doaj   +3 more sources

Chimera state in coupled map lattice of matrices

open access: yesLietuvos Matematikos Rinkinys, 2021
In recent years, a lot of research has focused on understanding the behavior of when synchronous and asynchronous phases occur, that is, the existence of chimera states in various networks.
Kotryna Mačernytė, Rasa Šmidtaitė
doaj   +1 more source

Zero-sum triangles for involutory, idempotent, nilpotent and unipotent matrices

open access: yesResults in Applied Mathematics, 2022
In some matrix formations, factorizations and transformations, we need special matrices with some properties and we wish that such matrices should be easily and simply generated and of integers.
Pengwei Hao, Chao Zhang, Huahan Hao
doaj   +1 more source

The Enumeration of Jordan′s Normal Form of k-nilpotent Matrices

open access: yesJournal of Harbin University of Science and Technology, 2019
As a kind of special matrices, the nilpotent matrices has good properties. In this paper, we mainly discuss the enumeration problem of the Jordan′s normal form of 4-nilpotent matrix.
CHEN Jian-da, WANG Ping, ZHANG Lu
doaj   +1 more source

On Cauchy problem for Euler–Poisson–Darboux system with nilpotent matrix coefficient

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
The solution of Cauchy problem for the system of Euler–Poisson–Darboux equations with nilpotent matrix coefficient of power m is obtained by the Riemann method. The Hadamard well-posedness theorem for the Cauchy problem solution is formulated.
E. A. Maksimova
doaj   +3 more sources

Free products of cyclic groups in groups of infinite unitriangular matrices

open access: yesМатематичні Студії, 2023
Groups of infinite unitriangular matrices over associative unitary rings are considered. These  groups naturally act on infinite dimensional free modules over underlying rings. They are profinite in case underlying rings are finite.
A. Oliynyk
doaj   +1 more source

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