### Test Groups for Whitehead Groups

by Eklof and Fuchs and Shelah. [EFSh:879]

Rocky Mountain J Math, 2012

We consider the question of when the dual of a Whitehead
group is a test group for Whitehead groups. This turns out
to be equivalent to the question of when the tensor product of
two Whitehead groups is Whitehead. We investigate what
happens in different models of set theory.

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