Tight sign-central matrices (Q1406293)
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scientific article; zbMATH DE number 1978115
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Tight sign-central matrices |
scientific article; zbMATH DE number 1978115 |
Statements
Tight sign-central matrices (English)
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9 September 2003
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It is proved that all tight sign-central matrices are minimal sign-central. The lower bound of the number of columns of a tight sign-central matrix with no zero rows is determined in terms of the number of rows. The characterization of the equality case is discussed.
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sign pattern matrix
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sign-central matrix
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tight sign-central matrix
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