From: uranus!ikastan@uunet.uu.net (Ilias Kastanas) Subject: Re: Is G free? Date: 26 Oct 2000 08:30:16 -0500 Newsgroups: sci.math.research Summary: [missing] In article <8snp3h$mqo$1@nnrp1.deja.com>, Robin Chapman wrote: @In article <39D5A5AA.AD5C908B@its.caltech.edu>, @qiang lin wrote: @> Let G be the subgroup of direct product of (say, countably many) copies @> of Z whose elements have uniformly bounded coordinates. @> @> Is G free abelian group? @> @> I guess not @> @ @It is free. I seem to remember this is a theorem of Specker, and @a proof can be found in one of L. Fuchs's books on Abelian groups. Wasn't Specker's theorem "any subgroup of G of cardi- nality w_1 is free"? Ilias . .