Timeline for Two directed colimits of same spaces with different inclusions
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Jun 23, 2019 at 0:52 | answer | added | Andrea Marino | timeline score: 2 | |
| Jun 23, 2019 at 0:19 | comment | added | Andrea Marino | Yeah, sure! I thought about that in ordinals with multiplication by 2 in omega, but didn't realize we could do it in groups more easily (in ordinals, honestly, I wouldnt know how to show it)! | |
| Jun 22, 2019 at 11:29 | comment | added | Todd Trimble | @Andrea, why don't you write that up? You could take for example $\mathbb{Z} \to \mathbb{Z} \to \ldots$ where in one case it's all identity maps, and in the other it's all multiplication by 2 (in groups). | |
| Jun 22, 2019 at 11:23 | history | edited | lun |
edited tags
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| Jun 22, 2019 at 9:10 | comment | added | Andrea Marino | It would be enough to find an example in sets, categories or groups, cause the latter embeds into simplicial sets (preserving directed colimits and monomorphisms). In sets, unluckily, there are no examples, because the two infinite unions always have the same cardinality. | |
| Jun 22, 2019 at 8:07 | history | edited | user64494 | CC BY-SA 4.0 |
The title is improved.
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| Jun 22, 2019 at 5:29 | history | edited | Michael Hardy | CC BY-SA 4.0 |
added 24 characters in body
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| Jun 21, 2019 at 20:48 | history | asked | lun | CC BY-SA 4.0 |