2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/73973This is a renovated list of open problems, to appear in: "Affine Algebraic Geometry" conference Proceedings volume in Contemporary Mathematics series of the Amer. Math. Soc. Ed. by Jaime Gutierrez, Vladimir Shpilrain, and Jie-Tai Yu.Algebraic Geometry14XX, 32XXtext