Timeline for Two arcs in the complement of a disc must intersect?
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| Nov 27, 2023 at 22:39 | comment | added | D.S. Lipham | @AndyPutman The one in the comment above is probably the simplest and I would accept it if written as an answer here. But I suspect there are many others that are less elementary but use established (well-known) results. That is the nature of my proof. | |
| Nov 27, 2023 at 22:29 | comment | added | Andy Putman | You were already given an answer by The Amplitwist in the comments. Also, this is basically circular. The proof that $K_{3,3}$ is not planar uses the same kinds of things that go into proving the Jordan curve theorem type results that are needed to prove what you're trying to prove. | |
| Nov 27, 2023 at 22:09 | history | edited | D.S. Lipham | CC BY-SA 4.0 |
added 42 characters in body
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| Nov 27, 2023 at 22:03 | history | answered | D.S. Lipham | CC BY-SA 4.0 |