Timeline for Suprema of lower density of sums and products of sets with lower density 0
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 11, 2015 at 4:44 | comment | added | bof | Your first question is answered by some of the answers to this old question of yours, for instance, this answer of mine. | |
| Dec 10, 2015 at 23:09 | history | edited | Stefan Kohl♦ | CC BY-SA 3.0 |
Improved the formatting of the question.
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| Jun 4, 2015 at 11:42 | vote | accept | Dominic van der Zypen | ||
| Jun 4, 2015 at 10:42 | answer | added | Stefan Kohl♦ | timeline score: 4 | |
| Jun 4, 2015 at 7:48 | comment | added | Dominic van der Zypen | Many thanks, Anthony - do you want to post your construction as a (partial) answer? | |
| Jun 4, 2015 at 7:28 | comment | added | Anthony Quas | The first one is certainly 1. For a trivial construction, let $n_1\ll n_2\ll n_3\ll\ldots$. Then if $A=[n_1,n_2]\cup [n_3,n_4]\cup [n_5,n_6]$ while $B=\{0\}\cup [n_2,n_3]\cup [n_4,n_5]\cup\ldots$, their union is everything, but both have lower density 0. | |
| Jun 4, 2015 at 6:35 | history | asked | Dominic van der Zypen | CC BY-SA 3.0 |