Andersen, Brooke M.; Kach, Asher M.; Melnikov, Alexander G.; Solomon, Reed Jump degrees of torsion-free abelian groups. (English) Zbl 1273.03142 J. Symb. Log. 77, No. 4, 1067-1100 (2012). MSC: 03D45 20K15 20K20 PDF BibTeX XML Cite \textit{B. M. Andersen} et al., J. Symb. Log. 77, No. 4, 1067--1100 (2012; Zbl 1273.03142) Full Text: DOI Euclid
Downey, Rodney G.; Goncharov, Sergei S.; Kach, Asher M.; Knight, Julia F.; Kudinov, Oleg V.; Melnikov, Alexander G.; Turetsky, Daniel Decidability and computability of certain torsion-free abelian groups. (English) Zbl 1211.03063 Notre Dame J. Formal Logic 51, No. 1, 85-96 (2010). Reviewer: Marius Zimand (Towson) MSC: 03D45 03B25 20K15 20K20 PDF BibTeX XML Cite \textit{R. G. Downey} et al., Notre Dame J. Formal Logic 51, No. 1, 85--96 (2010; Zbl 1211.03063) Full Text: DOI