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In this paper, we will give an algebraic proof for determining the sections for the universal pointed hyperelliptic curves, when $g\geq 3$ and the image of the $\ell$-adic cyclotomic character $G_k\to \Z^\times$ is infinite. Furthermore, we…

Algebraic Geometry · Mathematics 2016-09-15 Tatsunari Watanabe

The purpose of this paper is to propose an efficient method to compute the automorphism group of an arbitrary hyperelliptic function field (genus>1) over a given ground field of characteristic >2 as well as over its algebraic extensions.

Number Theory · Mathematics 2007-05-23 Norbert Goeb

Motivated by the analogy between number fields and function fields, this paper extends the main result of \cite{janbazi2025unified} to the function field setting. Let $C$ be a smooth affine curve over a finite field, and let $\pi: S…

Algebraic Geometry · Mathematics 2025-07-29 Fateme Sajadi

We determine all complex hyperelliptic curves with many automorphisms and decide which of their jacobians have complex multiplication.

Algebraic Geometry · Mathematics 2017-11-20 Nicolas Müller , Richard Pink

In a previous paper, the author examined the possible torsions of an elliptic curve over the quadratic fields $\mathbb Q(i)$ and $\mathbb Q(\sqrt{-3})$. Although all the possible torsions were found if the elliptic curve has rational…

Number Theory · Mathematics 2011-11-24 Filip Najman

The well-known analogies between number fields and function fields have led to the transposition of many problems from one domain to the other. In this paper, we will discuss traffic of this sort, in both directions, in the theory of…

Number Theory · Mathematics 2007-05-23 Douglas Ulmer

Conics and Cartesian ovals are very important curves in various fields of science. Also aspheric curves based on conics are useful in optics. Superconic curves recently suggested by A. Greynolds are extensions of both conics and Cartesian…

General Mathematics · Mathematics 2016-09-21 Sunggoo Cho

We prove the filling area conjecture in the hyperelliptic case. In particular, we establish the conjecture for all genus 1 fillings of the circle, extending P. Pu's result in genus 0. We translate the problem into a question about closed…

Differential Geometry · Mathematics 2007-05-23 Victor Bangert , Christopher Croke , Sergei V. Ivanov , Mikhail G. Katz

Combining $2$-descent techniques with Riemann-Roch and B\'ezout's theorems, we give an upper bound on the number of rational points of bounded height on elliptic and hyperelliptic curves over function fields of characteristic $\neq 2$. We…

Number Theory · Mathematics 2025-10-16 Jean Gillibert , Emmanuel Hallouin , Aaron Levin

We show how to speed up the computation of isomorphisms of hyperelliptic curves by using covariants. We also obtain new theoretical and practical results concerning models of these curves over their field of moduli.

Algebraic Geometry · Mathematics 2015-01-13 Reynald Lercier , Christophe Ritzenthaler , Jeroen Sijsling

We prove a symplectic version of a conjecture of Lian and Pandharipande: in sufficiently high degree, the fixed-domain Gromov-Witten invariants of positive symplectic manifolds are signed counts of pseudo-holomorphic curves. The original…

Symplectic Geometry · Mathematics 2025-08-05 Alessio Cela , Aleksander Doan

We generalize Iskovskih's theorem about surfaces without irregularity and bigenus from the smooth case to regular surfaces over arbitrary fields, with special focus on the case of imperfect fields. This includes surfaces that are…

Algebraic Geometry · Mathematics 2025-03-14 Andrea Fanelli , Stefan Schröer

A field F is said to have the Bogomolov Property related to a height function h, if h(a) is either zero or bounded from below by a positive constant for all a in F. In this paper we prove that the maximal algebraic extension of a number…

Number Theory · Mathematics 2011-03-08 Lukas Pottmeyer

We give a proof of the Gromov compactness theorem using the language of stable curves (i.e. cusp-curve of Gromov, or stable maps of Kontsevich and Manin) in general setting: An almost complex structure on a target manifold is only…

Differential Geometry · Mathematics 2016-09-07 S. Ivashkovich , V. Shevchishin

We establish characterization of $H^1$ Sobolev spaces by certain square functions, improving previous results.

Classical Analysis and ODEs · Mathematics 2026-01-05 Shuichi Sato

In this article, we introduce the notion of global adelic space of an arithmetic variety over an adelic curve and prove an equidistribution theorem for a generic sequence of subvarieties. As an application, we prove a Bogomolov type theorem…

Number Theory · Mathematics 2022-09-26 Huayi Chen , Atsushi Moriwaki

In this paper we prove an extension of a result of Gromov, Henkin and Shubin [GHS] on holomorphic L_{2} functions on coverings of strongly pseudoconvex manifolds.

Complex Variables · Mathematics 2007-05-23 Alexander Brudnyi

In this paper, we have defined bicomplex valued functions of bounded variations and rectifiable hyperbolic path. We have studied the integration of product-type bicomplex functions over rectifiable hyperbolic path. Also we have established…

Complex Variables · Mathematics 2024-01-18 Chinmay Ghosh , Soumen Mondal

In this paper we prove the conjecture posed by Kl\'en et al. in \cite{kvz}, and give optimal inequalities for generalized trigonometric and hyperbolic functions.

Classical Analysis and ODEs · Mathematics 2014-03-03 Barkat Ali Bhayo , Li Yin

We prove the famous Faber intersection number conjecture and other more general results by using a recursion formula of $n$-point functions for intersection numbers on moduli spaces of curves. We also present some vanishing properties of…

Algebraic Geometry · Mathematics 2011-03-24 Kefeng Liu , Hao Xu
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