2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/68043In this note we prove that there is no constant $C$, depending on the genus of the surface, such that every element in the mapping class group can be written as a product of at most $C$ torsion elements, answering a question of T. E. Brendle and B. Farb in the negative.Added a new section. Corrected some tipos. Now 3 pagesGeometric Topologytext