2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/179873We construct and fully characterize a scalar boundary conformal field theory on a triangulated Riemann surface. The results are analyzed from a string theory perspective as tools to deal with open/closed string dualities.40 pages, 7 figures; typos correctedHigh Energy Physics - TheoryBoundary Conformal Field Theory and Ribbon Graphs: a tool for open/closed string dualitiestext