A characterization of the nearly sign central matrices and its minimallity (Q1429001)
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scientific article; zbMATH DE number 2063148
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A characterization of the nearly sign central matrices and its minimallity |
scientific article; zbMATH DE number 2063148 |
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A characterization of the nearly sign central matrices and its minimallity (English)
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29 March 2004
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Sign central matrices and nearly sign central matrices (NSCM) were fully characterized by \textit{T. Ando} and \textit{R. A. Brualdi} [Linear Algebra Appl. 208--209, 283--295 (1994; Zbl 0818.15017)] resp. \textit{G.-Y. Lee} and \textit{G.-S. Cheon} [Bull. Korean Math. Soc. 37, 771--778 (2000; Zbl 0978.15015)]. In this paper, the authors give a different characterization of NSCM, introduce the notion of nearly minimal sign central matrices, and establish a number of their properties.
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(nearly) sign central matrices
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(nearly) minimal sign central matrices
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