A non-reflexive Whitehead group

Details A non-reflexive Whitehead group A non-reflexive Whitehead group

1999-08-29

arxiv.org/abs/math/9908157v1

Mathematics

Logic

Scientific paper

We prove that it is consistent that there is a non-reflexive Whitehead group,
in fact one whose dual group is free. We also prove that it is consistent that
there is a group A such that Ext(A,Z) is torsion and Hom(A,Z)=0. As an
application we show the consistency of the existence of new co-Moore spaces.

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