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FINITE-DIMENSIONAL ORDERED VECTOR SPACES WITH RIESZ INTERPOLATION AND EFFROS–SHEN’S UNIMODULARITY CONJECTURE

Part of: Ordered structures Lattices Topological linear spaces and related structures

Published online by Cambridge University Press:  13 May 2016

AARON TIKUISIS Open the ORCID record for AARON TIKUISIS [Opens in a new window]
AARON TIKUISIS*
Affiliation:
Institute of Mathematics, University of Aberdeen, Aberdeen, AB24 3UE, UK email [email protected]
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Abstract

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It is shown that, for any field $\mathbb{F}\subseteq \mathbb{R}$, any ordered vector space structure of $\mathbb{F}^{n}$ with Riesz interpolation is given by an inductive limit of a sequence with finite stages $(\mathbb{F}^{n},\mathbb{F}_{\geq 0}^{n})$ (where $n$ does not change). This relates to a conjecture of Effros and Shen, since disproven, which is given by the same statement, except with $\mathbb{F}$ replaced by the integers, $\mathbb{Z}$. Indeed, it shows that although Effros and Shen’s conjecture is false, it is true after tensoring with $\mathbb{Q}$.

Keywords

dimension groupsRiesz interpolationordered vector spacesunimodularity conjecturesimplicial groupslattice-ordered groups

MSC classification

Primary: 46A40: Ordered topological linear spaces, vector lattices
Secondary: 06B75: Generalizations of lattices 06F20: Ordered abelian groups, Riesz groups, ordered linear spaces
Type
Research Article
Information
Journal of the Australian Mathematical Society , Volume 101 , Issue 2 , October 2016 , pp. 277 - 287
Copyright
© 2016 Australian Mathematical Publishing Association Inc. 

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