Timeline for Size of antichains in powerset of $\mathbb N$
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 27 at 14:49 | vote | accept | E. Z. L. | ||
| May 25 at 21:53 | history | edited | Saúl RM | CC BY-SA 4.0 |
added 48 characters in body
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| May 25 at 20:52 | history | edited | Saúl RM | CC BY-SA 4.0 |
added 234 characters in body
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| May 25 at 10:09 | comment | added | Saúl RM | Nice ones. The answer I link two above also gives an example where the intersection between any two elements of the antichain is finite | |
| May 25 at 2:42 | comment | added | bof | Or the sets $\mathbb Q\cap(x,x+1)$ for $x\in\mathbb R$. Or the sets $X\subset\mathbb Z$ such that $|X\cap\{2n,2n+1\}|=1$ for all $n\in\mathbb Z | |
| May 25 at 1:39 | history | answered | Saúl RM | CC BY-SA 4.0 |