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We apply Vojta's conjecture to blowups and deduce a number of deep statements regarding (generalized) greatest common divisors on varieties, in particular on projective space and on abelian varieties. Special cases of these statements…

Number Theory · Mathematics 2007-07-09 Joseph H. Silverman

We discuss the theory of jet events in high-energy photon-proton interactions using a model which gives a good description of the data available on total inelastic $\gamma p$ cross sections up to $\sqrt{s}$=210 GeV. We show how to calculate…

High Energy Physics - Phenomenology · Physics 2014-11-17 L. Durand , K. Honjo , R. Gandhi , I. Sarcevic , H. Pi

We study invariant jet differentials in the framework of complex hyperbolicity, focusing on the algebra of invariants for the non--reductive reparametrization group $G_k = \mathbb{C}^{\ast} \ltimes U_k$. The paper develops a uniform,…

Representation Theory · Mathematics 2025-11-21 Mohammad Reza Rahmati

We prove a conjecture due to Sturmfels and Uhler concerning the degree of the projective variety associated to the Gaussian graphical model of the cycle. We involve new methods based on the intersection theory in the space of complete…

Algebraic Geometry · Mathematics 2021-11-05 Rodica Andreea Dinu , Mateusz Michałek , Martin Vodička

We establish that the intersection number between the horizontal foliations of any two finite-area holomorphic quadratic differentials on an arbitrary Riemann surface is finite. Our main result shows that the intersection number is jointly…

Complex Variables · Mathematics 2025-06-19 Dragomir Saric , Taro Shima

In this paper, a generic intersection theorem in projective differential algebraic geometry is presented. Precisely, the intersection of an irreducible projective differential variety of dimension d>0 and order h with a generic projective…

Algebraic Geometry · Mathematics 2011-07-19 Wei Li , Xiao-Shan Gao

We prove a general vanishing theorem for the cohomology of products of symmetric and skew-symmetric powers of an ample vector bundle on a smooth complex projective variety. Special cases include an extension of classical theorems of…

alg-geom · Mathematics 2009-10-28 Laurent Manivel

We give a generalization of the classical Bombieri--Schneider--Lang criterion in transcendence theory. We give a local notion of $LG$--germ, which is similar to the notion of $E$-- function and Gevrey condition, and which generalize (and…

Algebraic Geometry · Mathematics 2008-11-20 Carlo Gasbarri

We prove a combination theorem for trees of (strongly) relatively hyperbolic spaces and finite graphs of (strongly) relatively hyperbolic groups. This gives a geometric extension of Bestvina and Feighn's Combination Theorem for hyperbolic…

Geometric Topology · Mathematics 2014-11-11 Mahan Mj , Lawrence Reeves

We prove that, on a smooth projective variety over an algebraically closed field of characteristic 0, the semiregularity map annihilates every obstruction to embedded deformations of a local complete intersection subvariety with extendable…

Algebraic Geometry · Mathematics 2013-11-11 Donatella Iacono , Marco Manetti

The main purpose of this paper is to prove the following theorem on the defect relations for ample divisors of abelian varieties. Main Theorem. Let $A$ be an abelian variety of complex dimension $n$ and $D$ be an ample divisor in $A$. Let…

Complex Variables · Mathematics 2008-02-03 Yum-Tong Siu , Sai-Kee Yeung

An analogue of Serre's theorem is established for finite dimensional simple Lie superalgebras, which describes presentations in terms of Chevalley generators and Serre type relations relative to all possible choices of Borel subalgebras.…

Representation Theory · Mathematics 2011-01-18 R. B. Zhang

In [Ann. of Math. 169 (2009)], Min Ru proved a second main theorem for algebraically nondegenerate holomorphic curves in complex projective varieties intersecting fixed hypersurface targets. In this paper, by introducing a new proof method…

Complex Variables · Mathematics 2018-11-13 Gerd Dethloff , Tran Van Tan

In [7], Higashitani, Kummer, and Micha{\l}ek pose a conjecture about the symmetric edge polytopes of complete multipartite graphs and confirm it for a number of families in the bipartite case. We confirm that conjecture for a number of new…

Combinatorics · Mathematics 2024-04-03 Max Kölbl

Let $k$ be an algebraically closed field of characteristic zero, and let $X/k$ be a projective variety. The conjectures of Demailly--Green--Griffiths--Lang posit that every integral subvariety of $X$ is of general type if and only if $X$ is…

Algebraic Geometry · Mathematics 2023-06-26 Jackson S. Morrow

A hypertoric variety is a quaternionic analogue of a toric variety. Just as the topology of toric varieties is closely related to the combinatorics of polytopes, the topology of hypertoric varieties interacts richly with the combinatorics…

Algebraic Geometry · Mathematics 2021-06-18 Nicholas Proudfoot , Ben Webster

We generalize some properties related to Hilbert series and Lefschetz properties of Milnor algebras of projective hypersurfaces with isolated singularities to the more general case of an almost complete intersection ideal $J$ of dimension…

Algebraic Geometry · Mathematics 2017-08-30 Alexandru Dimca , Dorin Popescu

In this note we give a positive answer to a question asked by Y. Colin de Verdi\`ere concerning the converse of the following theorem, due to A. N. Varchenko: two germs of volume forms are equivalent with respect to diffeomorphisms…

Symplectic Geometry · Mathematics 2014-06-03 Konstantinos Kourliouros

The famous Sidorenko's conjecture asserts that for every bipartite graph $H$, the number of homomorphisms from $H$ to a graph $G$ with given edge density is minimized when $G$ is pseudorandom. We prove that for any graph $H$, a graph…

Combinatorics · Mathematics 2024-08-29 Seonghyuk Im , Ruonan Li , Hong Liu

We use a variational principle to prove an existence and uniqueness theorem for planar weighted Delaunay triangulations (with non-intersecting site-circles) with prescribed combinatorial type and circle intersection angles. Such weighted…

Geometric Topology · Mathematics 2013-09-17 Boris A. Springborn
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