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Related papers: Arakelov invariants of Riemann surfaces

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A simple and efficient formula is proposed for varying Abelian integrals (including their periods) under variation of the generators of the classical Schottky group representing a Riemann surface.

Complex Variables · Mathematics 2025-09-30 Andrei Bogatyrev

We consider several differential-topological invariants of compact 4-manifolds which directly arise from Riemannian variational problems. Using recent results of Bauer and Furuta, we compute these invariants in many cases that were…

Differential Geometry · Mathematics 2007-05-23 Masashi Ishida , Claude LeBrun

We introduce a novel class of rotation invariants of two dimensional curves based on iterated integrals. The invariants we present are in some sense complete and we describe an algorithm to calculate them, giving explicit computations up to…

Computer Vision and Pattern Recognition · Computer Science 2013-05-30 Joscha Diehl

We classify invariant curves for birational surface maps that are expanding on cohomology. When the expansion is exponential, the arithmetic genus of an invariant curve is at most one. This implies severe constraints on both the type and…

Algebraic Geometry · Mathematics 2007-05-23 Jeffrey Diller , Daniel Jackson , Andrew Sommese

The present paper is a sequel to our work on hybrid geometry of curves and their moduli spaces. We introduce a notion of hybrid Laplacian, formulate a hybrid Poisson equation, and give a mathematical meaning to the convergence both of the…

Algebraic Geometry · Mathematics 2022-03-25 Omid Amini , Noema Nicolussi

We construct the infinite sequence of invariants for curves in surfaces by using word theory that V. Turaev introduced. For plane closed curves, we add some extra terms, e.g. the rotation number. From these modified invariants, we get the…

Geometric Topology · Mathematics 2007-05-23 Noboru Ito

We describe an algorithm for computing certain characteristic numbers of surface scrolls using degenerations. As a corollary we obtain a method for computing the corresponding Gromov-Witten invariants of Grassmannians.

Algebraic Geometry · Mathematics 2007-05-23 Izzet Coskun

For any arbitrary algebraic curve, we define an infinite sequence of invariants. We study their properties, in particular their variation under a variation of the curve, and their modular properties. We also study their limits when the…

Mathematical Physics · Physics 2007-05-23 Bertrand Eynard , Nicolas Orantin

In the present paper we find explicit formulas for the degrees of Heegner divisors on arithmetic quotients of the orthogonal group $\Orth(2,p)$ and for the integrals of certain automorphic Green's functions associated with Heegner divisors.…

Number Theory · Mathematics 2007-05-23 Jan Hendrik Bruinier , Ulf Kuehn

We show that although the fundamental group of the complement of an algebraic affine plane curve is not easy to compute, it possesses a more accessible quotient, which we call the Orevkov invariant.

Algebraic Geometry · Mathematics 2007-05-23 Walter D. Neumann , Paul Norbury

Using Arakelov geometry, we compute the partition function of the noncompact free boson at genus two. We begin by compiling a list of modular invariants which appear in the Arakelov theory of Riemann surfaces. Using these quantities, we…

High Energy Physics - Theory · Physics 2023-08-22 Thomas Vandermeulen

We introduce the p-adic analogue of Arakelov intersection theory on arithmetic surfaces. The intersection pairing in an extension of the p-adic height pairing for divisors of degree 0 in the form described by Coleman and Gross. It also uses…

Number Theory · Mathematics 2007-05-23 Amnon Besser

We present an algorithmic framework for computing generators for the ring of invariants of an Artin-Schreier curve. We give explicit invariants for almost all Artin-Schreier curves of genus up to~8 in standard form, and for a handful of…

Number Theory · Mathematics 2026-02-27 Juanita Duque-Rosero , Elisa Lorenzo García , Beth Malmskog , Renate Scheidler

In this article we study abstract and embedded invariants of reduced curve germs via topological techniques. One of the most important numerical analytic invariants of an abstract curve is its delta invariant. Our primary goal is to develop…

Geometric Topology · Mathematics 2020-03-17 José Ignacio Cogolludo-Agustín , Tamás László , Jorge Martín-Morales , András Némethi

We introduce four invariants of algebraic varieties over imperfect fields, each of which measures either geometric non-normality or geometric non-reducedness. The first objective of this article is to establish fundamental properties of…

Algebraic Geometry · Mathematics 2020-10-14 Hiromu Tanaka

This study defines finite-type invariants for curves on surfaces and reveals the construction of these finite-type invariants for stable homeomorphism classes of curves on compact oriented surfaces without boundaries. These invariants are a…

Geometric Topology · Mathematics 2008-10-15 Noboru Ito

We prove the multiple cover formula conjecture for abelian surfaces for a large class of insertions, including all stationary invariants. The proof uses the reduced degeneration formula expressing the invariants in terms of the correlated…

Algebraic Geometry · Mathematics 2025-12-10 Thomas Blomme , Francesca Carocci

We prove that if (C,0) is a reduced curve germ on a rational surface singularity (X,0) then its delta invariant can be recovered by a concrete expression associated with the embedded topological type of the pair (X,C). Furthermore, we also…

Algebraic Geometry · Mathematics 2019-11-19 José Ignacio Cogolludo-Agustín , Tamás László , Jorge Martín-Morales , András Némethi

We consider the connection of functional decompositions of rational functions over the real and complex numbers, and a question about curves on a Riemann sphere which are invariant under a rational function.

Complex Variables · Mathematics 2024-02-23 Peter Müller

We define refined invariants which "count" nodal curves in sufficiently ample linear systems on surfaces, conjecture that their generating function is multiplicative, and conjecture explicit formulas in the case of K3 and abelian surfaces.…

Algebraic Geometry · Mathematics 2015-09-01 Lothar Göttsche , Vivek Shende