摘要
Denote by Dm the dihedral group of order 2m. Let R(Dm) be its complex representation ring, and let △(Dm) be its augmentation ideal. In this paper, we determine the isomorphism class of the n-th augmentation quotient △^n(Dm)/△^n+1(Dm) for each positive integer n.
Denote by Dm the dihedral group of order 2m. Let R(Dm) be its complex representation ring, and let △(Dm) be its augmentation ideal. In this paper, we determine the isomorphism class of the n-th augmentation quotient △^n(Dm)/△^n+1(Dm) for each positive integer n.