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arxiv: 1608.00221 · v2 · pith:SDHWSXSKnew · submitted 2016-07-31 · 🧮 math.AG

Okounkov bodies associated to pseudoeffective divisors II

classification 🧮 math.AG
keywords bodiesokounkovpseudoeffectivedivisordivisorsrationalsomeadmissible
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We first prove some basic properties of Okounkov bodies, and give a characterization of Nakayama and positive volume subvarieties of a pseudoeffective divisor in terms of Okounkov bodies. Next, we show that each valuative and limiting Okounkov bodies of a pseudoeffective divisor which admits the birational good Zariski decomposition is a rational polytope with respect to some admissible flag. This is an extension of the result of Anderson-K\"{u}ronya-Lozovanu about the rational polyhedrality of Okounkov bodies of big divisors with finitely generated section rings.

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