2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/72758We show that the graded commutative ring structure of the Hochschild cohomology HH*(A) is trivial in case A is a triangular quadratic string algebra. Moreover, in case A isgentle, the Lie algebra structure on HH*(A) is also trivial.10 pages. Submited for publicationK-Theory and HomologyRings and Algebras16E40text