Abstract
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.
Original language | English |
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Pages (from-to) | 199-214 |
Number of pages | 16 |
Journal | Journal of Pure and Applied Algebra |
Volume | 156 |
Issue number | 2-3 |
DOIs | |
State | Published - 23 Feb 2001 |
Keywords
- 03E35
- 03E75
- 18G15
- 20K20
- 55N10
- Primary 20K35
- Secondary 13L05