%0 Journal Article
%T Borel Whitehead groups
%A Saharon Shelah
%J Mathematics
%D 1998
%I arXiv
%X We investigate the Whiteheadness of Borel abelian groups (aleph_1-free, wlog, as otherwise this is trivial). We show that CH (and even WCH) implies any such abelian group is free, and always aleph_2-free.
%U http://arxiv.org/abs/math/9809198v1