Classes of Ultrasimplicial Lattice-Order
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Daniele Mundici
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Article
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1999
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Elsevier Science
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English
⚖ 71 KB
A lattice-ordered abelian group is called ultrasimplicial iff every finite set of positive elements belongs to the monoid generated by some finite set of positive Z-independent elements. This property originates from Elliott's classification of AF C U -algebras. Using fans and their desingularizatio