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Summary
| Description |
English: The yellow region is a topological space X. The blue circle is a 1-dimensional sphere in X. It cannot be shrunk continuously to a point in X; therefore; X has a hole with a 1-dimensional boundary. |
| Date | |
| Source | Own work |
| Author | Erel Segal |
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I, the copyright holder of this work, hereby publish it under the following license:
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:22, 1 May 2022 | | 326 × 217 (12 KB) | Erel Segal | Uploaded while editing "Hole (topology)" on en.wikipedia.org |
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