TY - JOUR
T1 - The consistency of Ext(G, Z)=Q
AU - Shelah, Saharon
PY - 1981/3
Y1 - 1981/3
N2 - 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].
AB - 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].
UR - https://www.scopus.com/pages/publications/51249184780
U2 - 10.1007/BF02762854
DO - 10.1007/BF02762854
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AN - SCOPUS:51249184780
SN - 0021-2172
VL - 39
SP - 74
EP - 82
JO - Israel Journal of Mathematics
JF - Israel Journal of Mathematics
IS - 1-2
ER -