File:Topological space examples.png: Difference between revisions

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File:Mug and Torus morph.gif|link=Topology (nonfiction)|[[Topology (nonfiction)|Topology]] lesson says it "never gets tired of changing from a cup to a donut and back again."
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Latest revision as of 11:32, 6 August 2017

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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By Dcoetzee - Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=4114048

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current11:04, 6 August 2017Thumbnail for version as of 11:04, 6 August 2017542 × 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...