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We study the shapes of all Newton-Okounkov bodies $\Delta_{v}(D)$ of a given big divisor $D$ on a surface $S$ with respect to all rank 2 valuations $v$ of $K(S)$. We obtain upper bounds for, and in many cases we determine exactly, the…

Algebraic Geometry · Mathematics 2025-01-17 Julio José Moyano-Fernández , Matthias Nickel , Joaquim Roé

We study the additivity of Newton-Okounkov bodies. Our main result states that on two-dimensional subcones of the ample cone the Newto-Okounkov body associated to an appropriate flag acts additively. We prove this by induction relying on…

Algebraic Geometry · Mathematics 2026-01-23 Robert Wilms

In this article, we study Newton-Okounkov bodies on projective vector bundles over curves. Inspired by Wolfe's estimates used to compute the volume function on these varieties, we compute all Newton-Okounkov bodies with respect to linear…

Algebraic Geometry · Mathematics 2018-10-16 Pedro Montero

We generalize the theory of Newton-Okounkov bodies of big divisors to the case of graded linear series. One of the results is the generalization of slice formulas and the existence of generic Newton-Okounkov bodies for birational graded…

Algebraic Geometry · Mathematics 2018-01-16 Georg Merz

In this article we define and study convex bodies associated to linear series of adelic divisors over quasi-projective varieties that have been introduced recently by Xinyi Yuan and Shou-Wu Zhang. Restricting our attention to big adelic…

Algebraic Geometry · Mathematics 2023-01-20 Debam Biswas

A Newton-Okounkov body is a convex body constructed from a polarized variety with a valuation on its function field. Kaveh (resp., the first author and Naito) proved that the Newton-Okounkov body of a Schubert variety associated with a…

Algebraic Geometry · Mathematics 2017-07-25 Naoki Fujita , Hironori Oya

The theory of Newton--Okounkov bodies provides direct relations and points out analogies between the theory of mixed volumes of convex bodies, on the one hand, and the intersection theories of Cartier divisors and of Shokurov $b$-divisors,…

Algebraic Geometry · Mathematics 2025-12-19 Askold Khovanskii

To a generically big adelic divisor, we can associate an arithmetic Okounkov body, which is a pair of the geometric Okounkov body and the concave transform of the Green functions. In this paper, we show that the infimum of the concave…

Algebraic Geometry · Mathematics 2016-01-21 Hideaki Ikoma

We associate convex bodies to a wide class of graded G-algebras where G is a connected reductive group. These convex bodies give information about the Hilbert function as well as multiplicities of irreducible representations appearing in…

Algebraic Geometry · Mathematics 2012-03-30 Kiumars Kaveh , Askold G. Khovanskii

Okounkov bodies, which are closed convex sets defined for big line bundles, have rich information on the line bundles. On the other hand, Seshadri constants are invariants which measure the positivity of line bundles. In this paper, we…

Algebraic Geometry · Mathematics 2013-06-03 Atsushi Ito

We generalize Kawamata's product formula for volumes of canonical divisors to arbitrary divisors using Okounkov bodies

Algebraic Geometry · Mathematics 2019-08-27 Sung Rak Choi , Seung-Jo Jung , Jinhyung Park , Joonyeong Won

In recent years, the interaction between the local positivity of divisors and Okounkov bodies has attracted considerable attention, and there have been attempts to find a satisfactory theory of positivity of divisors in terms of convex…

Algebraic Geometry · Mathematics 2020-08-11 Jinhyung Park , Jaesun Shin

Given a smooth projective algebraic surface X, a point O in X and a big divisor D on X, we consider the set of all Newton-Okounkov bodies of D with respect to valuations of the field of rational functions of X centred at O, or,…

Algebraic Geometry · Mathematics 2016-02-08 C. Ciliberto , M. Farnik , A. Küronya , V. Lozovanu , J. Roé , C. Shramov

Let $\mathscr{L} \rightarrow X$ be an ample line bundle over a complex normal projective variety $X$. We construct a flag $X_0 \subseteq X_1 \subseteq \cdots \subseteq X_n=X$ of subvarieties for which the associated Okounkov body for…

Algebraic Geometry · Mathematics 2014-09-09 Henrik Seppänen

We show that the volume of transcendental big $(1,1)$-classes on compact K\"ahler manifolds can be realized by convex bodies, thus answering questions of Lazarsfeld-Musta\c{t}\u{a} and Deng. In our approach we use an approximation process…

Differential Geometry · Mathematics 2026-01-06 Tamás Darvas , Rémi Reboulet , David Witt Nyström , Mingchen Xia , Kewei Zhang

A Newton-Okounkov body is a convex body constructed from a projective variety with a globally generated line bundle and with a higher rank valuation on the function field, which gives a systematic method of constructing toric degenerations…

Representation Theory · Mathematics 2025-07-24 Naoki Fujita , Akihiro Higashitani

We compute Okounkov bodies of projective complexity-one T-varieties with respect to two types of invariant flags. In particular, we show that the latter are rational polytopes. Moreover, using results of Dave Anderson and Nathan Ilten, we…

Algebraic Geometry · Mathematics 2011-08-03 Lars Petersen

A Newton-Okounkov convex body is a convex body constructed from a projective variety with a valuation on its homogeneous coordinate ring; this is deeply connected with representation theory. For instance, the Littelmann string polytopes and…

Quantum Algebra · Mathematics 2016-03-07 Naoki Fujita , Satoshi Naito

Up to a factor 1/n!, the volume of a big line bundle agrees with the Euclidean volume of its Okounkov body. The latter is the convex hull of top rank valuation vectors of sections, all with respect to a single flag. In this text we give a…

Algebraic Geometry · Mathematics 2019-03-12 Oliver Braunling

The purpose of the paper is to initiate the development of the theory of Newton Okounkov bodies of curve classes. Our denition is based on making a fundamental property of NewtonOkounkov bodies hold also in the curve case: the volume of the…

Algebraic Geometry · Mathematics 2022-09-27 Lucie Devey