Timeline for Combinatorial characterization of intersecting intervals in the plane
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 28, 2020 at 18:19 | comment | added | Richard Stanley | This has a similar flavor to the allowable sequences of Goodman and Pollack at link.springer.com/chapter/10.1007/978-3-642-58043-7_6. | |
| May 28, 2020 at 12:39 | comment | added | Per Alexandersson | @MattF. I use the notation of q-analogs, math.upenn.edu/~peal/polynomials/q-analogues.htm | |
| May 28, 2020 at 8:12 | comment | added | user44143 | What does $[n]_q$ mean here? | |
| May 28, 2020 at 5:32 | history | edited | Per Alexandersson | CC BY-SA 4.0 |
added refinement
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| S Nov 8, 2016 at 17:53 | history | bounty ended | CommunityBot | ||
| S Nov 8, 2016 at 17:53 | history | notice removed | CommunityBot | ||
| S Oct 31, 2016 at 16:36 | history | bounty started | Per Alexandersson | ||
| S Oct 31, 2016 at 16:36 | history | notice added | Per Alexandersson | Draw attention | |
| Oct 8, 2016 at 13:41 | history | edited | Per Alexandersson | CC BY-SA 3.0 |
made some statements a bit clearer
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| Oct 6, 2016 at 23:18 | comment | added | Per Alexandersson | @T.Amdeberhan: Yes, I agree - I am looking a bit on the case when the points in A are of the form (t,t^2) for t=1,2,...n. There are a few generalizations also that I have in mind, but not come up with a good definition: Find a symmetric polynomial defined in a similar spirit. Find a generalization/construction that detects topology/genus of the underlying surface. | |
| Oct 6, 2016 at 22:58 | comment | added | T. Amdeberhan | This could already be interesting if all the $n+n$ points are on a straight line, i.e. a 1-dimensional version of the 2-D problem. It might also be appealing to limit the general location of the points, say anywhere on a circle, etc. | |
| Oct 6, 2016 at 18:37 | history | asked | Per Alexandersson | CC BY-SA 3.0 |