A non-reflexive Whitehead group

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dc.creatorEklof, Paul C.
dc.creatorShelah, Saharon
dc.date1999-08-29
dc.date.accessioned2026-07-07T05:30:33Z
dc.date.available2026-07-07T05:30:33Z
dc.descriptionWe prove that it is consistent that there is a non-reflexive Whitehead group, in fact one whose dual group is free. We also prove that it is consistent that there is a group A such that Ext(A,Z) is torsion and Hom(A,Z)=0. As an application we show the consistency of the existence of new co-Moore spaces.
dc.identifierhttps://arxiv.org/abs/math/9908157
dc.identifierhttp://arxiv.org/abs/math/9908157
dc.identifierJ. Pure Appl. Algebra 156 No. 2-3 (2001) 199--214
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/79026
dc.subjectLogic
dc.subjectCommutative Algebra
dc.subjectRings and Algebras
dc.subjectPrimary 20K35, 20K20, 03E35, 03E75; Secondary 13L05, 18G15, 55N10
dc.titleA non-reflexive Whitehead group
dc.typetext

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