Timeline for Uncountable counterexamples in algebra
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| May 10, 2021 at 10:41 | history | edited | Jeremy Rickard | CC BY-SA 4.0 |
Added third example.
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| May 10, 2021 at 5:01 | comment | added | YCor | @WillSawin Pontryagin duality sends countable discrete groups onto metrizable compact groups. | |
| May 10, 2021 at 2:22 | comment | added | Will Sawin | @YCor But Pontryagin duality sends countability to a subtler property - having countably many open subgroups, I guess. | |
| May 9, 2021 at 22:20 | comment | added | YCor | By the way this translates into the same statements for profinite abelian groups (by Pontryagin duality). | |
| S May 9, 2021 at 22:16 | history | answered | Jeremy Rickard | CC BY-SA 4.0 | |
| S May 9, 2021 at 22:16 | history | made wiki | Post Made Community Wiki by Jeremy Rickard |