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We prove a conjecture of Boucksom-Demailly-P\u{a}un-Peternell, namely that on a projective manifold $X$ the cone of pseudoeffective classes in $H^{1,1}_{\mathbb{R}}(X)$ is dual to the cone of movable classes in $H^{n-1,n-1}_{\mathbb{R}}(X)$…

Complex Variables · Mathematics 2016-12-06 David Witt Nyström , Sébastien Boucksom

This is the second part of our work on Zariski decomposition structures, where we compare two different volume type functions for curve classes. The first function is the polar transform of the volume for ample divisor classes. The second…

Algebraic Geometry · Mathematics 2016-07-20 Brian Lehmann , Jian Xiao

A numerical equivalence class of k-cycles is said to be big if it lies in the interior of the closed cone generated by effective classes. We construct analogues for arbitrary cycle classes of the volume function for divisors which…

Algebraic Geometry · Mathematics 2017-02-22 Brian Lehmann

We characterize the movable cone of divisors using intersections against curves on birational models.

Algebraic Geometry · Mathematics 2012-12-27 Brian Lehmann

S. Boucksom, J.-P. Demailly, M. Paun and Th. Peternell proved that the cone of mobile curves ME(X) of a projective complex manifold X is dual to the cone generated by classes of effective divisors and conjectured an extension of this…

Algebraic Geometry · Mathematics 2009-08-06 Matei Toma

We give a relation between the existence of a Zariski decomposition and the behavior of the restricted volume of a big divisor on a smooth (complex) projective variety. Moreover, we give an analytic description of the restricted volume in…

Algebraic Geometry · Mathematics 2013-01-17 Shin-ichi Matsumura

We give a complete description of the behavior of the volume function at the boundary of the pseudoeffective cone of certain Calabi-Yau complete intersections known as Wehler N-folds. We find that the volume function exhibits a pathological…

Algebraic Geometry · Mathematics 2025-10-16 Simion Filip , John Lesieutre , Valentino Tosatti

We prove that the partial derivative of the volume function of big classes along any real divisor in a compact Kaehler manifold is equal to the numerical restricted volume of that class to the divisor. A consequence of our main result is…

Algebraic Geometry · Mathematics 2023-08-01 Duc-Viet Vu

We prove that a holomorphic line bundle on a projective manifold is pseudo-effective if and only if its degree on any member of a covering family of curves is non-negative. This is a consequence of a duality statement between the cone of…

Algebraic Geometry · Mathematics 2007-05-23 Sébastien Boucksom , Jean-Pierre Demailly , Mihai Paun , Thomas Peternell

In the paper \cite{Lau16}, it was shown that the restriction of a pseudoeffective divisor $D$ to a subvariety $Y$ with nef normal bundle is pseudoeffective. Assuming the normal bundle is ample and that $D|_Y$ is not big, we prove that the…

Algebraic Geometry · Mathematics 2019-07-10 Chung-Ching Lau

Our goal is twofold. On one hand we show that the cones of divisors ample in codimension $k$ on a Mori dream space are rational polyhedral. On the other hand we study the duality between such cones and the cones of $k$-moving curves by…

Algebraic Geometry · Mathematics 2025-08-05 Maria Chiara Brambilla , Olivia Dumitrescu , Elisa Postinghel , Luis José Santana Sánchez

Consider a smooth projective curve and a given embedding into projective space via a sufficiently positive line bundle. We can form the secant variety of $k$-planes through the curve. These are singular varieties, with each secant variety…

Algebraic Geometry · Mathematics 2024-10-15 Daniel Brogan

In this article, we compute the pseudo-effective cones of various projective bundles $\mathbb{P}_X(E)$ over higher dimensional varieties $X$ under some assumptions on $X$ as well as on the vector bundle $E$. We also compute the volume…

Algebraic Geometry · Mathematics 2024-12-06 Snehajit Misra , Anoop Singh

Inside the symmetric product of a very general curve, we consider the codimension-one subvarieties of symmetric tuples of points imposing exceptional secant conditions on linear series on the curve of fixed degree and dimension. We compute…

Algebraic Geometry · Mathematics 2016-02-03 Nicola Tarasca

We present several analogies between convex geometry and the theory of holomorphic line bundles on smooth projective varieties or K\"ahler manifolds. We study the relation between positive products and mixed volumes. We define and study a…

Algebraic Geometry · Mathematics 2023-06-22 Brian Lehmann , Jian Xiao

In this paper we define certain analogues of the volume of a divisor - called asymptotic cohomological functions - and investigate their behaviour on the Neron--Severi space. We establish that asymptotic cohomological functions are…

Algebraic Geometry · Mathematics 2007-05-23 Alex Kuronya

We prove a characterization of the dual mixed volume in terms of functional properties of the polynomial associated to it. To do this, we use tools from the theory of multilinear operators on spaces of continuos functions. Along the way we…

Functional Analysis · Mathematics 2014-08-29 Carlos H. Jiménez , Ignacio Villanueva

In this article, we show a differentiability property for the $\chi$-volume function on the ample cone of adelic line bundles over an adelic curve. This result is deduced from a non-Archimedean counterpart of a diffrentiability result of…

Algebraic Geometry · Mathematics 2023-11-06 Antoine Sédillot

We prove that the cone of mobile divisors and the cone of curves birationally movable in codimension 1 are dual in the $(K+B)$-negative part for a klt pair $(X/Z,B)$. We also prove the structure theorem and the contraction theorem for the…

Algebraic Geometry · Mathematics 2011-05-10 Sung Rak Choi

For a smooth projective curve, the cycles of subordinate or, more generally, secant divisors to a given linear series are among some of the most studied objects in classical enumerative geometry. We consider the intersection of two such…

Algebraic Geometry · Mathematics 2020-08-31 Mara Ungureanu
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