Hopf theorem (Q12012849)
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topological degree is the only homotopy invariant of continuous maps to spheres
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Hopf theorem |
topological degree is the only homotopy invariant of continuous maps to spheres |
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Wikipedia(3 entries)
- dewiki Satz von Hopf
- enwiki Hopf theorem
- jawiki ホップの定理