Timeline for A question on automorphisms of finite abelian groups
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Mar 19, 2013 at 4:50 | vote | accept | Marius Tarnauceanu | ||
| Mar 18, 2013 at 11:31 | history | edited | Amritanshu Prasad | CC BY-SA 3.0 |
Deleted claim that the problem easily reduces to odd order groups.
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| Mar 18, 2013 at 11:00 | comment | added | Amritanshu Prasad | The reduction-to-matrix-groups over $\mathbf Z/p\mathbf Z$ idea works for $2$-groups as well; so you need to figure out when an invertible matrix in $\mathbf Z/2\mathbf Z$ is a sum of two invertible matrices. Tom Goodwillie suggests that this holds for matrices that are at least $2\times 2$. | |
| Mar 18, 2013 at 6:34 | comment | added | Marius Tarnauceanu | Thank you very much. The real problem is for finite abelian 2-groups. | |
| Mar 16, 2013 at 13:53 | history | edited | Amritanshu Prasad | CC BY-SA 3.0 |
added 8 characters in body; added 39 characters in body
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| Mar 16, 2013 at 11:27 | history | edited | Amritanshu Prasad | CC BY-SA 3.0 |
deleted 4 characters in body; added 4 characters in body
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| Mar 16, 2013 at 11:20 | history | answered | Amritanshu Prasad | CC BY-SA 3.0 |