2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/70723We illustrate some simple ideas that can be used for obtaining a classification of small-dimensional solvable Lie algebras.Using these we obtain the classification of 3 and 4 dimensional solvable Lie algebras (over fields of any characteristic). Precise conditions for isomorphism are given.16 pagesRings and Algebras17B30; 17_08text