Timeline for Existence of a path in a set of subsets of $\omega$
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 21, 2017 at 16:39 | vote | accept | Dominic van der Zypen | ||
| Feb 21, 2017 at 9:17 | answer | added | bof | timeline score: 2 | |
| Feb 20, 2017 at 18:52 | answer | added | Gerhard Paseman | timeline score: 2 | |
| Feb 20, 2017 at 12:28 | comment | added | Max Alekseyev | If every element of $\omega$ is present in the same number ($r$) of sets in $L$, and the elements of $L$ have the same size $k$, it gives a block design $(|\omega|,k,1,r,|L|)$. mathworld.wolfram.com/BlockDesign.html | |
| Feb 20, 2017 at 9:56 | history | edited | Dominic van der Zypen | CC BY-SA 3.0 |
added 52 characters in body
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| Feb 20, 2017 at 9:53 | comment | added | Dominic van der Zypen | @RamirodelaVega yes, I want to say that for any two members of $\omega$ there is a member of $L$ containing the two. (If $m\neq n$ then the $e$ containing $m,n$ is unique by condition 2.) | |
| Feb 20, 2017 at 8:06 | history | edited | Bjørn Kjos-Hanssen | CC BY-SA 3.0 |
edited body
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| Feb 20, 2017 at 7:47 | comment | added | Ramiro de la Vega | In condition 3, do you mean $m,n \in e$? | |
| Feb 20, 2017 at 7:30 | history | asked | Dominic van der Zypen | CC BY-SA 3.0 |