Timeline for What is the automorphism group of the additive group of the p-adic integers?
Current License: CC BY-SA 2.5
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 5, 2010 at 10:04 | comment | added | Qiaochu Yuan | Speaking of which: mathoverflow.net/questions/915/… | |
| Jul 5, 2010 at 9:39 | comment | added | Yiftach Barnea | Thanks for pointing out my mistake. I always disliked even primes they are just troubles! | |
| Jul 5, 2010 at 8:01 | history | edited | Qiaochu Yuan | CC BY-SA 2.5 |
added 767 characters in body
|
| Jul 5, 2010 at 7:55 | history | undeleted | Qiaochu Yuan | ||
| Jul 5, 2010 at 5:20 | history | deleted | Qiaochu Yuan | ||
| Jul 5, 2010 at 0:28 | comment | added | Andreas Blass | The part of the answer about preserving Z seems to refer to automorphisms of the ring of p-adic integers, whereas the (title of the) question asks about automorphisms of the additive group. It seems to me that multiplication by any unit in Z_p is an automorphism of the additive group, and that these will be the only automorphisms. | |
| Jul 5, 2010 at 0:20 | vote | accept | Zev Chonoles | ||
| Jul 5, 2010 at 0:35 | |||||
| Jul 5, 2010 at 0:17 | history | answered | Qiaochu Yuan | CC BY-SA 2.5 |