Algunos ejemplos de grupos abelianos sin torsión

Abstract

Starting from the results of his thesis ["Clasificación de grupos abelianos sin torsión de rango 2 por invariantes" ("Classification of torsion-free abelian groups of rank 2 for invariants"), Dissertation, Univ. Murcia, Murcia, 1984; per bibl.], the author gives some examples which "exemplify the strong relationship that exists between the problem of isomorphism between abelian groups and certain questions from number theory"