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math.RT2003
On blocks with cyclic defect group and their head orders
Gabriele Nebe
It is shown that Section 8 of Plesken's 1983 lecture notes describes blocks of cyclic defect group up to Morita equivalence. In particular such a block is determined by its planar…
math.RT2003★ 1 cited
On the radical idealizer chain of symmetric orders
Gabriele Nebe
If is an indecomposable, non maximal, symmetric order, then the idealizer of the radical $Γ:= \Id(J(Λ)) = J(Λ)^{#} $ is the dual of the radical. If is hereditary then h…
math.RT2002
Elementary divisors of Gram matrices of certain Specht modules
Matthias Kuenzer, Gabriele Nebe
The elementary divisors of the Gram matrices of Specht modules S^lambda over the symmetric group are determined for two-row partitions and for two-column partitions lambda. More pr…