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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…

Algebraic Geometry · Mathematics 2017-04-25 Sung Rak Choi , Jinhyung Park , Joonyeong Won

Based on the work of Okounkov (\cite{Ok96}, \cite{Ok03}), Lazarsfeld and Musta\c t\u a (\cite{LM08}) and Kaveh and Khovanskii (\cite{KK08}) have independently associated a convex body, called the Okounkov body, to a big divisor on a smooth…

Algebraic Geometry · Mathematics 2010-08-27 Alex Kuronya , Victor Lozovanu , Catriona Maclean

The purpose of this paper is to investigate the close relation between Okounkov bodies and Zariski decompositions of pseudoeffective divisors on smooth projective surfaces. Firstly, we completely determine the limiting Okounkov bodies on…

Algebraic Geometry · Mathematics 2017-04-25 Sung Rak Choi , Jinhyung Park , Joonyeong Won

We continue to explore the numerical nature of the Okounkov bodies focusing on the local behaviors near given points. More precisely, we show that the set of Okounkov bodies of a pseudoeffective divisor with respect to admissible flags…

Algebraic Geometry · Mathematics 2020-08-10 Sung Rak Choi , Jinhyung Park , Joonyeong Won

Based on the work of Okounkov, Kaveh-Khovanskii and Lazarsfeld-Mustata independently associated a convex body, called the Okounkov body, to a big divisor on a normal projective variety with respect to an admissible flag. Although the…

Algebraic Geometry · Mathematics 2018-06-26 Jaesun Shin

The aim of this paper is to study the Okounkov bodies associated to abundant divisors. As a main result, we prove that the valuative Okounkov bodies of an abundant divisor encode all the numerical properties. We apply this result to recover…

Algebraic Geometry · Mathematics 2021-11-02 Sung Rak Choi , Jinhyung Park , Joonyeong Won

Let $X$ be a projective irreducible holomorphic symplectic manifold. We associate with any big $\mathbf{R}$-divisor $D$ on $X$ a convex polygon $\Delta_E^{\mathrm{num}}(D)$ of dimension 2, whose Euclidean volume is…

Algebraic Geometry · Mathematics 2025-01-22 Francesco Antonio Denisi

An Okounkov body is a convex subset of Euclidean space associated to a divisor on a smooth projective variety with respect to an admissible flag. In this paper, we recover the asymptotic base loci from the Okounkov bodies by studying…

Algebraic Geometry · Mathematics 2017-11-20 Sung Rak Choi , Yoonsuk Hyun , Jinhyung Park , Joonyeong Won

The theory of Newton-Okounkov bodies attaches a convex body to a line bundle on a variety equipped with flag of subvarieties. This convex body encodes the asymptotic properties of sections of powers of the line bundle. In this paper, we…

Algebraic Geometry · Mathematics 2016-11-15 Eric Katz , Stefano Urbinati

We prove that the Okounkov body of a big divisor with respect to a general flag on a smooth projective surface whose pseudo-effective cone is rational polyhedral decomposes as the Minkowski sum of finitely many simplices and line segments…

Algebraic Geometry · Mathematics 2016-08-11 Patrycja Łuszcz-Świdecka , David Schmitz

The Newton--Okounkov body of a big divisor D on a smooth surface is a numerical invariant in the form of a convex polygon. We study the geometric significance of the shape of Newton--Okounkov polygons of ample divisors, showing that they…

Algebraic Geometry · Mathematics 2022-03-16 Joaquim Roé , Tomasz Szemberg

In his work on log-concavity of multiplicities, Okounkov showed in passing that one could associate a convex body to a linear series on a projective variety, and then use convex geometry to study such linear systems. Although Okounkov was…

Algebraic Geometry · Mathematics 2008-05-30 Robert Lazarsfeld , Mircea Mustata

We study the restricted volume of effective divisors, its properties and the relationship with the related notion of reduced volume, defined via multiplier ideals, and with the asymptotic intersection number. We build upon the fundamental…

Algebraic Geometry · Mathematics 2012-07-06 Lorenzo Di Biagio , Gianluca Pacienza

The main goal of this article is to construct "arithmetic Okounkov bodies" for an arbitrary pseudo-effective (1,1)-class $\alpha$ on a K\"ahler manifold. Firstly, using Boucksom's divisorial Zariski decompositions for pseudo-effective…

Algebraic Geometry · Mathematics 2015-03-03 Ya Deng

Given a big divisor $D$ on a normal complex projective variety $X$, we show that the restricted volume of $D$ along a very general complete-intersection curve $C\subset X$ can be read off from the Okounkov body of $D$ with respect to an…

Algebraic Geometry · Mathematics 2009-10-14 Shin-Yao Jow

We show that the Okounkov body of a big divisor with finitely generated section ring is a rational simplex, for an appropriate choice of flag; furthermore, when the ambient variety is a surface, the same holds for every big divisor. Under…

Algebraic Geometry · Mathematics 2015-06-10 Dave Anderson , Alex Küronya , Victor Lozovanu

In recent years, the study of Newton-Okounkov bodies on normal varieties has become a central subject in the asymptotic theory of linear series, after its introduction by Lazarsfeld-Mustata and Kaveh-Khovanskii. One reason for this is that…

Algebraic Geometry · Mathematics 2016-02-08 Joaquim Roé

The purpose of this paper is to study the slices of the Okounkov bodies of Mori dream spaces. First, we analyze all the slices of the Okounkov bodies of big divisors on Mori dream spaces associated to some admissible flags. As a byproduct,…

Algebraic Geometry · Mathematics 2016-05-04 Jaesun Shin

The Okounkov body is a construction which, to an effective divisor D on an n-dimensional algebraic variety X, associates a convex body in the n-dimensional Euclidean space R^n. It may be seen as a generalization of the moment polytope of an…

Algebraic Geometry · Mathematics 2016-03-04 Shin-Yao Jow

We define and study the vanishing sequence along a real valuation of sections of a line bundle on a projective variety. Building on previous work of the first author with Huayi Chen, we prove an equidistribution result for vanishing…

Algebraic Geometry · Mathematics 2016-04-12 Sébastien Boucksom , Alex Küronya , Catriona Maclean , Tomasz Szemberg
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