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- W1994927309 abstract "Let F be a field with at least three elements. Zero patterns P such that all matrices over F with pattern P have the same rank are characterized. Similar results are proven for sign patterns. These results are applied to answering two open questions on conditions for formal nonsingularity of a pattern P, as well as to proving a sufficient condition on P such that all matrices over F with pattern P have the same height characteristic." @default.
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- W1994927309 date "1993-02-01" @default.
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- W1994927309 title "Ranks of zero patterns and sign patterns<sup>*</sup>" @default.
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- W1994927309 doi "https://doi.org/10.1080/03081089308818204" @default.
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