RT Book, Section T1 Algunos ejemplos de grupos abelianos sin torsión A1 Delgado Pérez, Juan Ramón AB 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" PB Univ. Murcia YR 1985 FD 1985 LK https://hdl.handle.net/20.500.14352/65437 UL https://hdl.handle.net/20.500.14352/65437 NO Actas de las X jornadas Hispano Lusas de matemáticas, Universidad de Murcia, 21 a 25 de enero de 1985 DS Docta Complutense RD 7 abr 2025