Test Groups for Whitehead Groups [article]

Paul C. Eklof and Laszlo Fuchs and Saharon Shelah
2007 arXiv   pre-print
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.
arXiv:math/0702293v1 fatcat:no43kn3tmjf3piwonlv6535jpu