Timeline for Strange result about convexity
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 1, 2021 at 15:41 | answer | added | Beni Bogosel | timeline score: 2 | |
| Nov 1, 2021 at 11:23 | history | edited | Rodrigo de Azevedo | CC BY-SA 4.0 |
Added source of the question
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| Oct 31, 2021 at 21:52 | answer | added | Iosif Pinelis | timeline score: 3 | |
| Oct 31, 2021 at 9:34 | vote | accept | Dattier | ||
| Oct 31, 2021 at 0:35 | answer | added | Iosif Pinelis | timeline score: 15 | |
| Oct 30, 2021 at 21:39 | history | became hot network question | |||
| Oct 30, 2021 at 20:31 | answer | added | zeb | timeline score: 44 | |
| Oct 30, 2021 at 17:28 | comment | added | zeb | Any such function $f$ is a third-order-convex function, that is, all of the divided differences $[a,b,c,d,e;f]$ are at least $0$. Compute the limiting divided difference $[0,0,1,1,1;f] = \lim_{\epsilon \rightarrow 0} [0,\epsilon,1-2\epsilon,1-\epsilon,1;f]$ and the inequality pops out. You don't need to assume that $f''(0) = 0$. | |
| Oct 30, 2021 at 13:08 | comment | added | Dattier | artofproblemsolving.com/community/c7h1570936 | |
| Oct 30, 2021 at 12:58 | comment | added | Jochen Glueck | What makes you suspect that it might be true? | |
| Oct 30, 2021 at 12:49 | history | asked | Dattier | CC BY-SA 4.0 |