2006
DOI: 10.13001/1081-3810.1221
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Essential decomposition of polynomially normal matrices in real indefinite inner product spaces

Abstract: Abstract. Polynomially normal matrices in real indefinite inner product spaces are studied, i.e., matrices whose adjoint with respect to the indefinite inner product is a polynomial in the matrix. The set of these matrices is a subset of indefinite inner product normal matrices that contains all selfadjoint, skew-adjoint, and unitary matrices, but that is small enough such that all elements can be completely classified. The essential decomposition of a real polynomially normal matrix is introduced. This is a d… Show more

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Cited by 7 publications
(2 citation statements)
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“…hypothesis that the spectrum is real. For the case of a nonreal spectrum, further considerations are necessary, see [18] for details.…”
Section: I) Blocks Associated With Real Eigenvalues λ J ∈ Rmentioning
confidence: 99%
See 1 more Smart Citation
“…hypothesis that the spectrum is real. For the case of a nonreal spectrum, further considerations are necessary, see [18] for details.…”
Section: I) Blocks Associated With Real Eigenvalues λ J ∈ Rmentioning
confidence: 99%
“…We mainly consider the case F = C here, but we will extend results to the real case, whenever this easily achievable. However, the investigation of the real case in full detail needs additional discussions and is referred to the subsequent paper [18].…”
Section: Introduction Letmentioning
confidence: 99%