2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/64822We describe the role of algebraic extensions in the theory of commutative, unital normed algebras, with special attention to uniform algebras. We shall also compare these constructions and show how they are related to each other.14 pages; plain TeXFunctional Analysis46J05; 46J10text