Intervals of almost totally positive matrices (Q1870044)
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scientific article; zbMATH DE number 1903561
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Intervals of almost totally positive matrices |
scientific article; zbMATH DE number 1903561 |
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Intervals of almost totally positive matrices (English)
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4 May 2003
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The author shows that a stronger form of the total nonnegativity is preserved on matrix intervals with respect to the chequerboard partial ordering on the real nonsingular matrices. The analogous question for totally nonnegative matrices seems to remain open since 1996.
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totally nonnegative matrices
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almost totally positive matrices
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matrix intervals
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interval arithmetic
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chequerboard partial ordering
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