Results 31 to 40 of about 3,271,968 (288)

Joint and Generalized Spectral Radius of Upper Triangular Matrices with Entries in a Unital Banach Algebra [PDF]

Sahand Communications in Mathematical Analysis, 2020
In this paper, we discuss some properties of joint spectral {radius(jsr)} and  generalized spectral radius(gsr)  for a finite set of upper triangular matrices with entries in a Banach algebra and represent relation between geometric and joint/generalized
Hamideh Mohammadzadehkan, Ali Ebadian, Kazem Haghnejad Azar   +2 more
doaj   +1 more source

Concordance of top 10% bigger marker effect among methodologies, in upper triangular matrix refers to additive marker effects, in lower triangular matrix refers to dominance marker effects.

, 2022
Concordance of top 10% bigger marker effect among methodologies, in upper triangular matrix refers to additive marker effects, in lower triangular matrix refers to dominance marker effects.
Felipe Lopes da Silva (8881748), Cosme Damião Cruz (4618942), Camila Ferreira Azevedo (4252774), Nick Vergara Lopes Serão (4252756), Ithalo Coelho de Sousa (12003655), Moysés Nascimento (4252765), Emilly Ruas Alkimim (11886378), Ana Carolina Campana Nascimento (4252762), Eveline Teixeira Caixeta (4620232), Isabela de Castro Sant’anna (12003658)   +9 more
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Uniform bounds on the 1-norm of the inverse of lower triangular Toeplitz matrices [PDF]

, 2011
A uniform bound on the 1-norm is given for the inverse of a lower triangular Toeplitz matrix with non-negative monotonically decreasing entries whose limit is zero. The new bound is sharp under certain specified constraints.
Yuan, Y.X., Liu, X., McKee, S., Yuan, J.Y.   +3 more
core   +3 more sources

Fuzzy Adaptive Control of Uncertain MIMO Chaotic Systems with Unknown Control Direction

Complexity, 2021
This paper presents an adaptive controller for MIMO chaotic systems with system uncertainties and unknown control direction. In the controller design, the matrix decomposition theory is used, and we decompose the control gain matrix into a positive ...
Hua Zhang
doaj   +1 more source

Accurate and Efficient Derivative-Free Three-Phase Power Flow Method for Unbalanced Distribution Networks

Computation, 2021
The power flow problem in three-phase unbalanced distribution networks is addressed in this research using a derivative-free numerical method based on the upper-triangular matrix.
Oscar Danilo Montoya, Juan S. Giraldo, Luis Fernando Grisales-Noreña, Harold R. Chamorro, Lazaro Alvarado-Barrios   +4 more
doaj   +1 more source

Derivations of upper triangular matrix rings

Linear Algebra and its Applications, 1993
Let \(R\) be a ring with unity. The authors consider derivations of the ring \(T_ n(R)\), the ring of \(n\times n\) upper triangular matrices over \(R\). For a derivation \(d\) of \(R\), \(\overline{d}\) denotes the derivation that is induced by \(d\) on \(T_ n(R)\).
Coelho, Sǒnia P., Polcino Milies, C.
openaire   +1 more source

Jordan left derivations in full and upper triangular matrix rings [PDF]

, 2010
In this paper, left derivations and Jordan left derivations in full and upper triangular matrix rings over unital associative rings are ...
Zhang, Hong-Ying, Xu, Xiao-Wei
core   +1 more source

Approximate Biprojectivity of ℓ1-Munn Banach Algebras

Journal of Mathematics, 2022
In the present paper, we study the approximate biprojectivity and weak approximate biprojectivity of ℓ1-Munn Banach algebras when the related sandwich matrix is regular over InvA.
G. Zarei, A. Pourabbas, M. Rostami, A. Sahami   +3 more
doaj   +1 more source

The image of multilinear polynomials evaluated on $3\times 3$ upper triangular matrices

, 2021
summary:We describe the images of multilinear polynomials of arbitrary degree evaluated on the $3\times 3$ upper triangular matrix algebra over an infinite ...
Mello, Thiago Castilho de
core   +1 more source

On biderivations of upper triangular matrix rings

Linear Algebra and its Applications, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources