2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/144014Let f be an orientation-preserving homeomorphism of the plane such that f-Id is contracting. Under these hypotheses, we establish the existence, for every periodic orbit, of a fixed point which has nonzero linking number with this periodic orbit.7 pages, 4 figuresDynamical Systems55M20, 54H20text