2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/76093In this article we calculate the n-string braid groups of certain non-contractible graphs. We use techniques from the work of A. Abrams, F. Connolly and M. Doig combined with Van Kampen's Theorem to prove these results.10 pages, 4 figuresGeometric Topology20F36Braid Groups of the Sun Graphtext