Decomposing induced characters of the centralizer of an $n$-cycle in the symmetric group on $2n$-elements

摘要

We give explicit multiplicities and formulas for multiplicities of charactersappearing in the decomposition of the induced characterInd^{S_{2n}}_{C_{S_{2n}}({\sigma})} 1_C, where {\sigma} is an n-cycle,C_{S_{2n}}({\sigma}) is the centralizer of {\sigma} in S_{2n}, and 1_C denotesthe trivial character on C_{S_{2n}}({\sigma}).