Timeline for Finite subgroups of ${\rm SL}_2(\mathbb{Z})$ (reference request)
Current License: CC BY-SA 2.5
4 events
| when toggle format | what | by | license | comment | |
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| Jun 8, 2010 at 13:59 | comment | added | Peter Samuelson | This is a very clean answer (at least, modulo the proof that $SL_2(\mathbb{Z}) \cong Z_4 \ast_{Z_2} Z_6$, which I knew already). Also, the fact that you mention feels like it should be true, and it's nice to know that it is. | |
| Jun 8, 2010 at 13:55 | vote | accept | Peter Samuelson | ||
| Jun 7, 2010 at 0:11 | comment | added | Autumn Kent | That's right. It follows, in particular, from the more general Kurosh Subgroup Theorem. See en.wikipedia.org/wiki/Kurosh_subgroup_theorem | |
| Jun 6, 2010 at 23:40 | history | answered | Allen Knutson | CC BY-SA 2.5 |