2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/107476Few changes. We compute the Hilbert series of some algebras associated to directed graphs and related to factorizations of noncommutative polynomials.AMSLaTeX, 9 pagesCombinatoricsQuantum Algebra05E05; 15A15; 16W30Hilbert series of algebras associated to directed graphstext