2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/73261The n-string braid group of a graph X is defined as the fundamental group of the n-point configuration space of the space X. This configuration space is a finite dimensional aspherical space. A. Abrams and R. Ghrist have conjectured that this braid group is a right angled Artin group if X is planar. We prove their conjecture if X is a tree whose nodes all lie in a single interval of X.13 pagesGeometric TopologyGroup Theory57S30(primary), 57Q05(secondary), 20F36text