531 reputation
416
bio website
location
age
visits member for 4 years, 1 month
seen 6 hours ago

Sep
17
comment vanishing higher cohomology group for property T group?
@BenWieland, I checked the references you mentioned, but I do not know why the group mentioned by YCor is of type FP. Could you please explain this?
Sep
14
comment vanishing higher cohomology group for property T group?
@BenWieland, thanks, I would check that.
Sep
14
comment vanishing higher cohomology group for property T group?
@BenWieland, could you give me a reference why the group mentioned by YCor has nontrivial $H^2(G, \mathbb{Z}G)$?
Sep
14
comment vanishing higher cohomology group for property T group?
@YCor, thanks for the reference!
Sep
14
comment vanishing higher cohomology group for property T group?
@YCor, in Ben's answer above, -3 paragraph, maybe there is some misunderstanding?
Sep
14
comment vanishing higher cohomology group for property T group?
@YCor, could you give me the reference on the property T group $G$ you mentioned such that $H^2(G;\mathbb{Z}G)$ is nontrivial? Thanks.
Aug
21
asked Reference on calculation of 2nd cohomology group
Aug
11
accepted vanishing higher cohomology group for property T group?
Aug
9
comment vanishing higher cohomology group for property T group?
@IgorBelegradek, thanks a lot for clarification!
Aug
9
comment vanishing higher cohomology group for property T group?
@IgorBelegradek, I am not able to download the paper you mentioned right now, if I understand your remark correctly, you mean there exists a property $T$ group $G$ with $H^2(G, \mathbb{Z})\neq 0$?
Aug
8
comment vanishing higher cohomology group for property T group?
@YCor, you mean for n=2, $G=SL_3(\mathbb{Z})$, the cohomology group vanishes?
Aug
8
asked vanishing higher cohomology group for property T group?
Jul
3
asked seek another proof of a result in Fourier analysis
Jul
2
awarded  Curious
Jan
3
accepted Restriction on the coefficients for an operator in the free group factor $ L(\mathbb{F}_2) $
Dec
24
revised Find a lower bound for a pre-invariant $Fol(L(F_m), X_m)$
Fix typo
Dec
24
revised Find a lower bound for a pre-invariant $Fol(L(F_m), X_m)$
Fix typo
Dec
20
awarded  Disciplined
Dec
3
accepted finite index, self-normalizing subgroup of $F_2$
Dec
3
comment finite index, self-normalizing subgroup of $F_2$
Thanks, I did not realize this simple observation.