Torsion-free abelian groups are consistently $ {\rm a}\Delta ^1_2$-complete
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Published:2019
Issue:3
Volume:247
Page:275-297
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ISSN:0016-2736
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Container-title:Fundamenta Mathematicae
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language:en
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Short-container-title:Fund. Math.
Author:
Shelah Saharon,Ulrich Douglas
Publisher
Institute of Mathematics, Polish Academy of Sciences
Subject
Algebra and Number Theory