most recent 30 from http://mathoverflow.net 2013-05-19T05:50:52Z http://mathoverflow.net/feeds/question/107318 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/107318/subgroups-of-direct-sum-of-a-prufer-group Fred.Fred 2012-09-16T13:31:42Z 2012-09-16T13:31:42Z

<p>Hello, I wonder which p-primary groups can be injected into a suitable direct sum of Prufer groups. I would suspect that ugly groups like the torsion part of $\prod \mathbb{Z}_{p^k}$ are not of this kind, but I was unable to figure it out. I would be grateful for any hint or reference.</p>