Timeline for Congruence Subgroups as Open Subgroups of the Modular Group Under the Right Topology
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
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| Mar 21, 2012 at 15:50 | comment | added | Marc Palm | Modulus Margulis rigidity, this is the same answer as mine. For $SL(2)$ you have to take the profinite completion with respect to a special sequence of subgroups. | |
| Aug 26, 2010 at 17:03 | history | edited | HJRW | CC BY-SA 2.5 |
Added reference
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| Aug 26, 2010 at 16:53 | history | answered | HJRW | CC BY-SA 2.5 |