Timeline for When are the main diagonals of a convex $2n$-gon concurrent?
Current License: CC BY-SA 3.0
7 events
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| Apr 13, 2017 at 12:58 | history | edited | CommunityBot |
replaced http://mathoverflow.net/ with https://mathoverflow.net/
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| Apr 13, 2017 at 12:19 | history | edited | CommunityBot |
replaced http://math.stackexchange.com/ with https://math.stackexchange.com/
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| Dec 8, 2016 at 4:48 | answer | added | Gerhard Paseman | timeline score: 3 | |
| Dec 8, 2016 at 3:05 | history | edited | cats | CC BY-SA 3.0 |
added 110 characters in body
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| Dec 8, 2016 at 3:04 | comment | added | cats | ah, you're right. But no, I do not mean to impose that condition in general. Thanks for the catch | |
| Dec 8, 2016 at 3:00 | comment | added | Noam D. Elkies | "The classical result in the hexagonal case is that this is true iff $ace=bdf$" $-$ that cannot be right in general. Counterexample: $(0,1)$, $(1,1)$, $(2,0)$, $(0,-1)$, $(-1,-1)$, $(-1,0)$, with the main diagonals meeting at the origin. If I remember right the missing hypothesis is that the hexagon be inscribed in a circle. Do you mean to impose this condition in general? | |
| Dec 8, 2016 at 1:58 | history | asked | cats | CC BY-SA 3.0 |