Critical sets of refined inertias for irreducible zero-nonzero patterns of orders 2 and 3 (Q426034)
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scientific article; zbMATH DE number 6044801
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Critical sets of refined inertias for irreducible zero-nonzero patterns of orders 2 and 3 |
scientific article; zbMATH DE number 6044801 |
Statements
Critical sets of refined inertias for irreducible zero-nonzero patterns of orders 2 and 3 (English)
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11 June 2012
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The authors study possible refined inertias of real square matrices with a given zero-nonzero pattern. They describe all minimal critical sets of refined inertias for irreducible zero-nonzero patterns of 2 by 2 and 3 by 3 matrices with the help of two digraph lemmas.
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matrix inertias
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permutation digraphs
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sign patterns
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zero-nonzero patterns
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refined inertias
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critical set of refined inertias
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