2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/98026In this article, we study local models associated to certain Shimura varieties. In particular, we present a resoultion of their singularities. As a consequence, we are able to determine the alternating semisimple trace of the geometric Frobenius on the sheaf of nearby cycles.Algebraic Geometry14G35;11G18text