2011
DOI: 10.1016/j.laa.2010.11.014
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Characterizations of EP matrices and weighted-EP matrices

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Cited by 42 publications
(35 citation statements)
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“…For example, Tian et al. summarize thirty five characterizations of EP matrices in [29]. Theorems 2.3 and 2.4 in the present paper are related to these characterizations and Theorems 2.1 and 2.2 state conditions under which an EP matrix commutes with an arbitrary matrix.…”
Section: Introductionmentioning
confidence: 78%
“…For example, Tian et al. summarize thirty five characterizations of EP matrices in [29]. Theorems 2.3 and 2.4 in the present paper are related to these characterizations and Theorems 2.1 and 2.2 state conditions under which an EP matrix commutes with an arbitrary matrix.…”
Section: Introductionmentioning
confidence: 78%
“…The above Remark (iii), Remark 2.1 and Theorem 3.5 in [18] allow us to present some characterizations for weighted-EP matrices when M = N . Proposition 2.1 Let A ∈ C n×n .…”
Section: Remark 22mentioning
confidence: 95%
“…The restricted weighted generalized inverse. For this section, we need the notion of the weighted Moore-Penrose inverse of a matrix A ∈ C m×n with respect to two Hermitian positive definite matrices M ∈ C m×m and N ∈ C n×n denoted by X = A † M,N satisfying the following four equations (see [4,page 118,Exercise 30] or [22,Section 3]; for computational methods, see [20], and for more on this subject, see [6,7]):…”
Section: Preliminaries and Notationmentioning
confidence: 99%
“…is called the V -orthogonal projector with respect to the semi-norm · V (see e.g., [21] or [22,Section 3]). The V -orthogonal projector is unique when r(V X) = r(X).…”
mentioning
confidence: 99%