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scientific article; zbMATH DE number 7370675
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | No label defined |
scientific article; zbMATH DE number 7370675 |
Statements
9 July 2021
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Poincaré-Birkhoff fixed point theorem
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noninvariant annulus
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non-starshaped boundary
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