A simple proof of Fiedler's conjecture concerning orthogonal matrices (Q1266982)
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scientific article; zbMATH DE number 1206698
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A simple proof of Fiedler's conjecture concerning orthogonal matrices |
scientific article; zbMATH DE number 1206698 |
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A simple proof of Fiedler's conjecture concerning orthogonal matrices (English)
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28 March 1999
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The author gives a new and shorter proof of Fiedler's conjecture that an \(n\times n\) orthogonal matrix, \(n>1\), which cannot be written as a direct sum, has at least \(4n-4\) nonzero entries.
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Fiedler's conjecture
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orthogonal matrix
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nonzero entries
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