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Related papers: Arithmetic intersection theory over adelic curves

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We define a variant of intersection space theory that applies to many compact complex and real analytic spaces $X$, including all complex projective varieties; this is a significant extension to a theory which has so far only been shown to…

Algebraic Topology · Mathematics 2018-12-06 Christian Geske

A result of Belyi can be stated as follows. Every curve defined over a number field can be expressed as a cover of the projective line with branch locus contained in a rigid divisor. We define the notion of geometrically rigid divisors in…

Algebraic Geometry · Mathematics 2007-05-23 Kapil Hari Paranjape

We study embedded rational curves in projective toric varieties. Generalizing results of the first author and Zotine for the case of lines, we show that any degree $d$ rational curve in a toric variety $X$ can be constructed from a special…

Algebraic Geometry · Mathematics 2026-01-14 Nathan Ilten , Jake Levinson

We consider an algebraic surface. For an irreducible curve on this surface and for a point on this curve one can associate an artinian ring, which is a sum of two-dimensional local fields. An example of two-dimensional local field is…

Number Theory · Mathematics 2015-06-26 D. V. Osipov

In this book, we establish a theory of adelic line bundles over quasi-projective varieties over finitely generated fields. Besides definitions of adelic line bundles, we consider their intersection theory, volume theory, and height theory,…

Number Theory · Mathematics 2025-06-17 Xinyi Yuan , Shou-Wu Zhang

We compute divisors class groups of singular surfaces. Most notably we produce an exact sequence that relates the Cartier divisors and almost Cartier divisors of a surface to the those of its normalization. This generalizes Hartshorne's…

Commutative Algebra · Mathematics 2013-01-16 Robin Hartshorne , Claudia Polini

In this paper we develop a bridge between model theory, geometric topology, and geometric group theory. In particular, we investigate the Ivanov Metaconjecture from the point of view of model theory, and more broadly we seek to answer the…

Geometric Topology · Mathematics 2023-06-12 Valentina Disarlo , Thomas Koberda , J. de la Nuez González

Vologodsky's theory of $p$-adic integration plays a central role in computing several interesting invariants in arithmetic geometry. In contrast with the theory developed by Coleman, it has the advantage of being insensitive to the…

Number Theory · Mathematics 2021-12-16 Enis Kaya

Using the discriminant modular form and the Noether formula it is possible to write the admissible self-intersection of the relative dualising sheaf of a semistable hyperelliptic curve over a number field or function field as a sum, over…

Algebraic Geometry · Mathematics 2012-03-29 Robin de Jong

We study hyperbolic curves and their Jacobians over finite fields in the context of anabelian geometry.

Algebraic Geometry · Mathematics 2008-02-27 Fedor Bogomolov , Mikhail Korotiaev , Yuri Tschinkel

We prove embeddings of adelic groups on an excellent scheme of special type and a flat quasicoherent sheaf on it. For a normal excellent scheme of special type we establish the equality…

Algebraic Geometry · Mathematics 2026-04-21 Dmitry Badulin

In the mid eighties Goldman proved an embedded curve could be isotoped to not intersect a closed geodesic if and only if their Lie bracket (as defined in that work) vanished. Goldman asked for a topological proof and about extensions of the…

Geometric Topology · Mathematics 2016-11-16 Moira Chas , Siddhartha Gadgil

In this paper, we develop a new approach to the discrimi-nant of a complete intersection curve in the 3-dimensional projective space. By relying on the resultant theory, we first prove a new formula that allows us to define this…

Symbolic Computation · Computer Science 2017-02-07 Laurent Busé , Ibrahim Nonkané

Arithmetical structures on a graph were introduced by Lorenzini as some intersection matrices that arise in the study of degenerating curves in algebraic geometry. In this article we study these arithmetical structures, in particular we are…

Combinatorics · Mathematics 2017-06-14 Hugo Corrales , Carlos E. Valencia

Numerical equivalence of algebraic cycles is defined abstractly by intersection numbers. Classically, for smooth complex proper toric varieties, the quotients by numerical equivalence with rational coefficients can be described…

Algebraic Geometry · Mathematics 2026-05-14 Ryota Mikami

On a smooth variety, Serre's intersection formula computes intersection multiplicities via an alternating sum of the lengths of Tor groups. When the variety is singular, the corresponding sum can be a divergent series. But there are…

Commutative Algebra · Mathematics 2015-08-03 Daniel Erman

In this paper, we discuss an interaction between complex geometry and integrable systems. Section 1 reviews the classical results on integrable systems. New examples of integrable systems, which have been discovered, are based on the Lax…

Dynamical Systems · Mathematics 2007-06-13 A. Lesfari

For an arbitrary complex algebraic variety which is not necessarily pure dimensional, the intersection complex can be defined as the direct sum of the Deligne-Goresky-MacPherson intersection complexes of each irreducible component. We give…

Algebraic Geometry · Mathematics 2020-02-10 Ben Wu

We give a close formula for the N\'eron-Tate height of tautological integral cycles on Jacobians of curves over number fields as well as a new lower bound for the arithmetic self-intersection number $\hat{\omega}^2$ of the dualizing sheaf…

Algebraic Geometry · Mathematics 2022-12-20 Robert Wilms

An ADE Dynkin diagram gives rise to a family of algebraic curves. In this paper, we use arithmetic invariant theory to study the integral points of the curves associated to the exceptional diagrams $E_6, E_7$, $E_8$. These curves are…

Number Theory · Mathematics 2017-07-17 Beth Romano , Jack A. Thorne