Timeline for Are isomorphic quotients of abelian groups induced by automorphisms? [closed]
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 27, 2021 at 9:58 | history | edited | YCor |
edited tags
|
|
| May 15, 2021 at 15:13 | history | closed |
abx Jeremy Rickard YCor Andreas Blass user44191 |
Not suitable for this site | |
| May 15, 2021 at 14:15 | comment | added | David Handelman | Did you check relatively easy cases, such as $G = {\bf Z}/p^2$ (where $p$ is a prime)? Does the number of automorphisms of $G$ exceed the number of proper subgroups? | |
| May 15, 2021 at 9:55 | review | Close votes | |||
| May 15, 2021 at 15:13 | |||||
| May 15, 2021 at 8:43 | answer | added | Francesco Polizzi | timeline score: 2 | |
| May 15, 2021 at 8:17 | comment | added | Wojowu | No, it is possible that $H_1$ is trivial but $H_2$ is not. Consider some infinite product. | |
| May 15, 2021 at 8:16 | review | First posts | |||
| May 15, 2021 at 8:41 | |||||
| May 15, 2021 at 8:11 | history | asked | Jack | CC BY-SA 4.0 |