Showing papers on "Torsion-free abelian group published in 2011"
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TL;DR: In this article, the authors provide a characterisation of linear order extensions of a given order on a group by modelling the linear orders using hyperplanes in a real vector spaces. But they do not provide a construction of an archimedian directed order for every torsion free abelian group.
Abstract: Partially ordered groups, also known as po-groups, are groups with a compatible partial order. Results from M.I. Zajceva and H.-H. Teh are combined in order to provide a full characterisation of linear order extensions of a given order on a group. In contrast to Teh this approach provides a method to discuss linear orders of different abelian rank in a uniform manner. This will be achieved by modelling the linear orders using hyperplanes in a real vector spaces. Among some additional remarks a construction of an archimedian directed order is given for every torsion free abelian group.