Timeline for Non-torsion part of the abelianisation of congruence subgroups
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 22, 2019 at 6:50 | vote | accept | Liam Baker | ||
| Nov 22, 2018 at 18:27 | comment | added | YCor | By the way it's been proved by Shalom-Vaserstein that $E(n,A)$ has Property T for all $n\ge 3$ and every finitely generated commutative (unital associative) ring $A$, so all its finite index subgroups have Property T. It's been extended to $A$ arbitrary finitely generated (associative unital) ring $A$ by Ershov-Jaikin. | |
| Nov 22, 2018 at 18:13 | comment | added | YCor | I wouldn't call it "more general setting" since in the setting of the question precisely the most delicate case is $n=2$. | |
| Nov 22, 2018 at 18:09 | history | answered | Andrei Smolensky | CC BY-SA 4.0 |