2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/64856In the present paper we study the structure of C*-$algebras generated by a certain *-algebra A and a partial isometry inducing an endomorphism of A.28 pagesOperator Algebras46L35, 47B99, 47L30Extensions of C*-algebras by partial isometriestext