File:Topological space examples.png
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Nonfiction: Topological space: Four examples and two non-examples of topologies on the three-point set {1,2,3}. The bottom-left example is not a topology because the union of {2} and {3} [i.e. {2,3}] is missing; the bottom-right example is not a topology because the intersection of {1,2} and {2,3} [i.e. {2}], is missing.
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External links:
- Topological space @ Wikipedia
Attribution:
By Dcoetzee - Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=4114048
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:04, 6 August 2017 | | 542 × 480 (56 KB) | Admin (talk | contribs) | Nonfiction: Topological space: Four examples and two non-examples of topologies on the three-point set {1,2,3}. The bottom-left example is not a topology because the union of {2} and {3} [i.e. {2,3}] is missing; the b... |
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