Bext^2(G,T) can be nontrivial, even assuming GCH
Logic
2009-09-25 v1 Rings and Algebras
Abstract
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 .
Keywords
Cite
@article{arxiv.math/9405214,
title = {Bext^2(G,T) can be nontrivial, even assuming GCH},
author = {Menachem Magidor and Saharon Shelah},
journal= {arXiv preprint arXiv:math/9405214},
year = {2009}
}