The isomorphism and quasi-isomorphism relations on the p p -local torsion-free abelian groups of rank n ≥ 3 n\geq 3 are incomparable with respect to Borel reducibility.
CITATION STYLE
Coskey, S. (2011). The classification of torsion-free abelian groups of finite rank up to isomorphism and up to quasi-isomorphism. Transactions of the American Mathematical Society, 364(1), 175–194. https://doi.org/10.1090/s0002-9947-2011-05349-3
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