2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/159356The forcing relation of braids has been introduced for a 2-dimensional analogue of the Sharkovskii order on periods for maps of the interval. In this paper, by making use of the Nielsen fixed point theory and a representation of braid groups, we deduce a trace formula for the computation of the forcing order.24 pages, 9 figuresDynamical SystemsGeometric Topology37E30; 20F36text