2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/167617Let X be a compact connected Riemann surface of genus at least two. We compute the Chen--Ruan cohomology ring of the moduli space of stable PSL(2, C)--bundles of nontrivial second Stiefel--Whitney class over X.To appear in International Mathematics Research NoticesAlgebraic GeometryAlgebraic Topology14D20; 14F05text