Block pro-fusion systems for profinite groups and blocks with infinite dihedral defect groups (2504.09286v1)

Abstract: We introduce block pro-fusion systems for blocks of profinite groups, prove a profinite version of Puig's structure theorem for nilpotent blocks, and use it to show that there is only one Morita equivalence class of blocks having the infinite dihedral pro-$2$ group as their defect group.