Bext^2(G,T) can be nontrivial, even assuming GCH

Details Bext^2(G,T) can be nontrivial, even assuming GCH Bext^2(G,T) can be nontrivial, even assuming GCH

1994-05-15

arxiv.org/abs/math/9405214v1

Contemp. Math. 171 (1994), 287--294

Mathematics

Logic

Scientific paper

Using the consistency of some large cardinals we produce a model of Set
Theory in which the generalized continuum hypothesis holds and for some
torsion-free abelian group G of cardinality aleph_{omega +1} and for some
torsion group T, Bext^2(G,T) not =0 .

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