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arXiv:math/9806165 [math.LO]AbstractReferencesReviewsResources

On the p-rank of Ext

Alan H. Mekler, Andrzej Rosłanowski, Saharon Shelah

Published 1998-06-15Version 1

Assume V=L and lambda is regular smaller than the first weakly compact cardinal. Under those circumstances and with arbitrary requirements on the structure of Ext(G,Z) (under well known limitations), we construct an abelian group G of cardinality lambda such that for no G' subseteq G, |G'|< lambda is G/G' free and Ext(G,Z) realizes our requirements.

Journal: Israel J. Math. 112 (1999) 327-356
Categories: math.LO, math.RA
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