The consistency of Ext(G, Z)=Q

Saharon Shelah

doi:10.1007/BF02762854

The consistency of Ext(G, Z)=Q

Saharon Shelah^*

^*Corresponding author for this work

Einstein Institute of Mathematics

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

For abelian groups, if V=L, Ext(G, Z) cannot have cardinality א₀. We show that G.C.H. does not imply this. See Hiller and Shelah [2], Hiller, Huber and Shelah [3], Nunke [5] and Shelah [6, 7, 8] for related results. We use the method of [7].

Original language	English
Pages (from-to)	74-82
Number of pages	9
Journal	Israel Journal of Mathematics
Volume	39
Issue number	1-2
DOIs	https://doi.org/10.1007/BF02762854
State	Published - Mar 1981

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The consistency of Ext(G, Z)=Q

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