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The structure of Ext(A,Z) and GCH: possible co-Moore spaces

Paul C. Eklof·Saharon Shelah
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Abstract

We consider what Ext(A,Z) can be when A is torsion-free and Hom(A,Z)=0. We thereby give an answer to a question of Golasinski and Goncalves which asks for the divisible Abelian groups which can be the type of a co-Moore space.

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Paul C. Eklof, Saharon Shelah. 2003-03-27. The structure of Ext(A,Z) and GCH: possible co-Moore spaces. https://arxiv.org/abs/math/0303344

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