Timeline for Can proper classes have different sizes?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Mar 13 at 11:41 | comment | added | Peter LeFanu Lumsdaine | One minor note: the language of “size”, “larger” etc for cardinality/equinumerosity can be quite misleading in settings without choice. Many of the results that make cardinality fit the intuition for a notion of “size” — most importantly, the duality between “injects into” and “surjects onto”; also cardinal trichotomy — depend on choice and may fail in its absence. So if you don’t want to presuppose choice, it’s good to at least be careful with that language. | |
| Mar 13 at 10:27 | history | edited | Zuhair Al-Johar | CC BY-SA 4.0 |
added 3 characters in body
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| Mar 13 at 6:58 | history | became hot network question | |||
| Mar 12 at 23:44 | answer | added | Joel David Hamkins | timeline score: 14 | |
| Mar 12 at 23:05 | history | edited | Anonymous grad student | CC BY-SA 4.0 |
added 29 characters in body
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| S Mar 12 at 22:58 | review | First questions | |||
| Mar 12 at 23:10 | |||||
| S Mar 12 at 22:58 | history | asked | Anonymous grad student | CC BY-SA 4.0 |