Timeline for Do isomorphic semi-direct products correspond to conjugate automorphisms?
Current License: CC BY-SA 2.5
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 11, 2016 at 4:56 | comment | added | Dan Ramras | For what it's worth "somewhere" is here: mathoverflow.net/questions/23456/… | |
| Jan 22, 2011 at 9:18 | vote | accept | Soluble | ||
| Jan 22, 2011 at 8:34 | comment | added | Dan Ramras | Yeah, I've actually posted this sort of example somewhere else on MO before. But I've never thought about the question of conjugacy of f(H) and g(H) in Out(N). | |
| Jan 22, 2011 at 8:31 | comment | added | Alex B. | @Dan That's right, sorry. See the comment thread on the question for the explanation of why I deleted. I do agree that the question is elementary, but I have tripped over semi-direct products more than once myself. While it's something I would expect any researcher to be able to figure out rather quickly, I wouldn't expect that any mathematicians must know the answer off the top of his head. | |
| Jan 22, 2011 at 8:28 | comment | added | Dan Ramras | Oh, I guess you undeleted an old answer? | |
| Jan 22, 2011 at 8:27 | comment | added | Dan Ramras | You beat me to it by several seconds... What if we ask the same question after passing to Out(N)? | |
| Jan 22, 2011 at 8:23 | history | undeleted | user9198 | ||
| Jan 22, 2011 at 4:13 | history | deleted | user9198 | ||
| Jan 22, 2011 at 4:13 | history | answered | Alex B. | CC BY-SA 2.5 |