Timeline for Set "crossing" all arithmetical integer sets
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Dec 31, 2020 at 18:39 | comment | added | Wojowu | @bof Not quite the statement you mention, but another question which exactly answers this problem has already been asked. | |
| Dec 31, 2020 at 12:02 | vote | accept | Dominic van der Zypen | ||
| Dec 31, 2020 at 10:02 | comment | added | bof | If $\kappa$ is an infinite cardinal number, and if $H$ is a hypergraph with at most $\kappa$ edges, and each edge contains at least $\kappa$ vertices, then $H$ is $2$-colorable. I'm surprised this hasn't come up yet, among all these questions about chromatic numbers of hypergraphs. | |
| Dec 31, 2020 at 9:54 | history | edited | Fedor Petrov | CC BY-SA 4.0 |
edited body
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| Dec 31, 2020 at 9:46 | history | edited | Fedor Petrov | CC BY-SA 4.0 |
added 227 characters in body
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| Dec 31, 2020 at 9:35 | history | answered | Fedor Petrov | CC BY-SA 4.0 |