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Questions on group theory which concern finite groups.
3
votes
Accepted
Algorithm for Brauer lifting via Brauer tree?
If I understand correctly, you have a tree with edges labelled by e1,...,en and vertices labelled
by v0,...,vn,...v(n+m-1), where the last m >= 1 of these label the same (namely the exceptional) verte …
6
votes
Parabolic induction GL(n,Zp)
If $P$ is the Borel and $\pi$ is admissible, then $\pi$ is 1-dimensional and let $\Pi$ denote the induction. Let $K(r)$ be the principal congruence subgroup
of elements in $GL_n(\mathbb Z_p)$ that are …