Representation theoretic interpretation of the Springer correspondence for dihedral groups

Abstract

The Lusztig-Shoji algorithm is generalized to a complex reflection group $W$ and give us a version of the Springer correspondence of $W$. We show that the combinatorics of generalized Springer correspondences of dihedral groups of order $2n$ exhibit the Brauer-Humphreys type reciprocity as in the case of Weyl groups for odd $n$, and these constitute a major portion of the stratification of the natural module categories attached to them.