How many negative entries can \(A^ 2\) have? (Q677903)
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scientific article; zbMATH DE number 1000049
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | How many negative entries can \(A^ 2\) have? |
scientific article; zbMATH DE number 1000049 |
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How many negative entries can \(A^ 2\) have? (English)
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16 April 1997
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The authors study sign patterns which ensure that some or all of the entries of the square of a matrix are negative. For instance, if all entries of the square are nonpositive then the original sign pattern must have a bipartite structure.
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sign pattern of matrix
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bipartite structure
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0.7480712
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0.7228234
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0.70228416
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