2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/108876This paper is devoted to the problem of sample path large deviations for multidimensional queueing models with feedback. We derive a new version of the contraction principle where the continuous map is not well-defined on the whole space: we give conditions under which it allows to identify the rate function. We illustrate our technique by deriving a large deviation principle for a class of networks that contains the classical Jackson networks.25 pages, 2 figuresProbability60F10; 60K25text