Results 111 to 120 of about 931 (215)

On Weak e-Reflexive Rings and Their Nil Extensions

Axioms
In this work, we establish the relationships between weak e-reversibility and weak e-semicommutativity, introducing weak e-reflexive rings as a natural generalization of reflexive and e-reflexive rings.
Awn Alqahtani, Eltiyeb Ali, Khalid I. A. Ahmed   +2 more
doaj   +1 more source

Left and Right Generalized Drazin Invertibility of an Upper Triangular Operator Matrices with Application to Boundary Value Problems

International Journal of Analysis and Applications, 2019
When A ∈ B(H) and B ∈ B(K) are given, we denote by MC the operator on the Hilbert space H ⊕ K of the form MC = (A C 0 B). In this paper we investigate the quasi-nilpotent part and the analytical core for the upper triangular operator matrix MC in terms ...
Kouider Miloud Hocine, Bekkai Messirdi, Mohammed Benharrat   +2 more
doaj   +2 more sources

Surface measure on, and the local geometry of, sub-Riemannian manifolds. [PDF]

Calc Var Partial Differ Equ, 2023
Don S, Magnani V.
europepmc   +1 more source

Multidual Complex Numbers and the Hyperholomorphicity of Multidual Complex-Valued Functions

Axioms
We develop a rigorous algebraic–analytic framework for multidual complex numbers DCn within the setting of Clifford analysis and establish a comprehensive theory of hyperholomorphic multidual complex-valued functions.
Ji Eun Kim
doaj   +1 more source

Cohomological dimension and arithmetical rank of some determinantal ideals

Le Matematiche, 2015
Let M be a (2 × n) non-generic matrix of linear forms in a polynomial ring. For large classes of such matrices, we compute the cohomological dimension (cd) and the arithmetical rank (ara) of the ideal I_2(M) generated by the 2-minors of M.
Davide Bolognini, Alessio Caminata, Antonio Macchia, Maral Mostafazadehfard   +3 more
doaj  

Enumeration of ideals of exceptional nilpotent matrix algebras [PDF]

, 2020
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.In well-known enumerations of characteristic ideals of the algebra NT(n,K) of all (lower) niltriangular n×n matrices over a field K and in related papers for nilpotent ...
Krivokolesko, V. P., Levchuk, V. M.
core  

Commentary: Multidimensional discrete chaotic maps

Frontiers in Physics, 2022
Rasa Smidtaite, Minvydas Ragulskis
doaj   +1 more source

The Enumeration of Equivalence Class of 3-nilpotent Matrices [PDF]

, 2006
主要对定义在一般数域上的3-幂零矩阵的相似等价类的个数问题进行探讨.从中得出n阶3-幂零矩阵秩的范围、n阶3-幂零矩阵的相似等价类的个数的计算公式,以及秩为r的所有n阶3-幂零矩阵的相似等价类的个数的计算公式.In this paper,we mainly discuss the enumeration problem of the equivalence class of 3-nilpotent matrix defined in normal number fields.We get ...
江飞, 林荣珍
core  

Reduction of a nilpotent intuitionistic fuzzy matrix using implication operator [PDF]

, 2016
A problem of reducing intuitionistic fuzzy matrices is examined and some useful properties are obtained with respect to nilpotent intutionistic fuzzy matrices.
Padder, Riyaz A., Murugadas, P.
core   +1 more source

On Nilpotent Subsemigroups in some Matrix Semigroups [PDF]

, 2007
2000 Mathematics Subject Classification: 20M20, 20M10.We describe maximal nilpotent subsemigroups of a given nilpotency class in the semigroup Ωn of all n × n real matrices with non-negative coefficients and the semigroup Dn of all doubly stochastic real
Ganyushkin, Olexandr, Mazorchuk, Volodymyr   +1 more
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