Timeline for One-step problems in geometry
Current License: CC BY-SA 2.5
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 31, 2020 at 0:44 | comment | added | Gjergji Zaimi | @AntonPetrunin: It's in Matousek's book "Lectures on discrete geometry" (chapter 14). There I see that it is attributed to a paper by J. Arias-de-Reyna, K. Ball, R. Villa called "Concentration of the distance in finite dimensional normed spaces". | |
| Dec 31, 2020 at 0:29 | comment | added | Anton Petrunin | Do you know, what is the source of this proof? | |
| Dec 17, 2009 at 7:36 | comment | added | Gjergji Zaimi | A possible hint: Let Y be the complement of $X_{\delta}$. Now form $X'$ as all $ax$ with $x\in X,a\in [0,1]$, similarly for $Y'$. What can be said about $X',Y'$ and $\frac{X'+Y'}{2}$ as subsets of $\mathbb{R}^{n+1}$? | |
| Dec 14, 2009 at 4:36 | comment | added | Anton Petrunin | (1) I do not know a proof of first problem which use Brun--Minkowski :( Can you give a hint? (2) Second problems looks nice --- I have to think a bit :)... Thank you | |
| Dec 14, 2009 at 2:38 | history | edited | Gjergji Zaimi | CC BY-SA 2.5 |
added 1 characters in body
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| Dec 13, 2009 at 10:21 | history | answered | Gjergji Zaimi | CC BY-SA 2.5 |