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Effros–Shen's unimodularity conjecture for ordered abelian groups
Let $n$ be a natural number, and let $(G,G^+)$ be an ordered, directed, unperforated, rank $n$ free abelian group with Riesz interpolation. An inductive-system realization conjectu…
Conjecturerefuteddimension-groups ordered-abelian-groups riesz-interpolationarXiv posted 2 days ago

Effros–Shen's unimodularity conjecture for ordered abelian groups