Results 21 to 30 of about 640 (203)

Results on the controllability of Caputo’s fractional descriptor systems with constant delays [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2023
The paper investigates the controllability of fractional descriptor linear systems with constant delays in control. The Caputo fractional derivative is considered.
Beata Sikora
doaj   +1 more source

On the generalized Drazin inverse and generalized resolvent [PDF]

open access: yes, 2001
summary:We investigate the generalized Drazin inverse and the generalized resolvent in Banach algebras. The Laurent expansion of the generalized resolvent in Banach algebras is introduced.
Stanimirović, Predrag S.   +1 more
core   +1 more source

Representations for the Drazin inverses of block matrices

open access: yesMATEC Web of Conferences, 2016
In this paper, we investigate representations of the Drazin inverse of a 2 × 2 block matrix. The Drazin inverse of a matrix is very important in various applied mathematical fields like machinery and automation, singular differential equations. We give a
Guo Li, Wang Jie, Du Wenming
doaj   +1 more source

Some additive results on Drazin inverses [PDF]

open access: yesApplied Mathematics and Computation, 2009
In this paper, two different approaches to compute the Drazin inverse of a sum of two elements (matrices or elements in a ring) are studied: powering and splitting. Different assumptions are considered in order to obtain the results.
Pedro Patrício, R. E. Hartwig
openaire   +2 more sources

Additive properties of the drazin inverse and the drazin inverse of block matrices [PDF]

open access: yes, 2015
In this dissertation, the Drazin inverse of a square complex matrix is studied. Additive properties of the Drazin inverse are investigated and some original results are presented.
Višnjić, Jelena M.
core   +1 more source

Perturbation Bound for the Drazin Inverse of the Matrix-Value Function

open access: yesAdvances in Mathematical Physics, 2019
The perturbation analysis of the differential for the Drazin inverse of the matrix-value function A(t)∈Cn×n is investigated. An upper bound of the Drazin inverse and its differential is also considered.
Yonghui Qin, Zhenshu Xie, Xiaoji Liu
doaj   +1 more source

On the coincidence of the Drazin inverse and the Drazin-Moore-Penrose inverses

open access: yesLinear and Multilinear Algebra, 2020
[EN] The aim of this work is to offer necessary and sufficient conditions for the coincidence of the Drazin inverse and the DMP inverses of finite square complex matrices. This characterization is deduced from statements valid for finite potent endomorphisms and, in particular, several properties of matrices and generalized inverses are given.
openaire   +2 more sources

Continuity and general perturbation of the Drazin inverse for closed linear operators

open access: yesAbstract and Applied Analysis, 2002
We study perturbations and continuity of the Drazin inverse of a closed linear operator A and obtain explicit error estimates in terms of the gap between closed operators and the gap between ranges and nullspaces of operators.
N. Castro González   +2 more
doaj   +1 more source

Further results on Left and Right Generalized Drazin Invertible Operators

open access: yesМатематичні Студії, 2020
In this paper we present some new characteristics and expressions of left and right generalized Drazin invertible bounded operators on a Banach space $X.$ An explicit formula relating the left and the right generalized Drazin inverses to spectral ...
So. Messirdi, Sa. Messirdi, B. Messirdi
doaj   +1 more source

On gs-Drazin inverses in a ring

open access: yesJournal of Algebra and Its Applications, 2019
An element [Formula: see text] in a ring [Formula: see text] has a gs-Drazin inverse if there exists [Formula: see text] such that [Formula: see text]. In this paper, we extend Cline’s formula and Jacobson’s Lemma for gs-Drazin inverses. Various additive properties of gs-Drazin inverses are thereby obtained.
Chen, Huanyin, Calci, Mete Burak
openaire   +2 more sources

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