On a conjecture of Hübner (Q1961742)
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scientific article; zbMATH DE number 1394541
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On a conjecture of Hübner |
scientific article; zbMATH DE number 1394541 |
Statements
On a conjecture of Hübner (English)
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24 July 2000
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boundary of the numerical range
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essential spectrum
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