Large characteristic subgroups of surface groups not containing any simple loops

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/59161We determine the largest (i.e. smallest index) characteristic subgroup of surface groups not containing any simple loops.6 pages, only minor changesGeometric Topology57M05Large characteristic subgroups of surface groups not containing any simple loopstext