Timeline for Is the ring of $p$-adic integers extremally disconnected?
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
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| Sep 2, 2019 at 18:21 | comment | added | KConrad | This example as written needs $p > 2$. If $p = 2$ then $U_n$ is all $p$-adic integers with absolute value $1/p^n$, so $U = \mathbf Z_2 - \{0\}$ and $\overline{U} = \mathbf Z_2$ is open in $\mathbf Z_2$. For the case $p = 2$ you could use $U_n = 2^n + 2^{n+2}\mathbf Z_2$ instead. | |
| Sep 2, 2019 at 15:20 | review | Late answers | |||
| Sep 2, 2019 at 15:21 | |||||
| Sep 2, 2019 at 15:05 | review | First posts | |||
| Sep 2, 2019 at 15:06 | |||||
| Sep 2, 2019 at 15:00 | history | answered | Heiko | CC BY-SA 4.0 |