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scientific article
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | No label defined |
scientific article |
Statements
1983
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Brown-Douglas-Fillmore theory
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principal axis theorem of linear algebra
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A necessary and sufficient condition that two essentially normal operators be essentially unitarily equivalent is that they have the same essential spectrum and the same index function
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insight into a structure
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construction of a proof
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