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scientific article; zbMATH DE number 1055441
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | No label defined |
scientific article; zbMATH DE number 1055441 |
Statements
1 September 1997
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biorthogonal system
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sum of units
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second-order nonselfadjoint differential operator
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complex-valued potential
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root functions
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basis property
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