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We find a new class of the Fuchsian equations, which have an algebraic geometric solutions with the parameter belonging to a hyperelliptic curve. Methods of calculating the algebraic genus of the curve, and its branching points, are…

Classical Analysis and ODEs · Mathematics 2007-05-23 Alexander O. Smirnov

We exhibit an explicit formula for the cardinality of solutions to a class of quadratic matrix equations over finite fields. We prove that the orbits of these solutions under the natural conjugation action of the general linear groups can…

Rings and Algebras · Mathematics 2024-03-01 Yin Chen , Xinxin Zhang

We describe an algorithm that computes explicit models of hyperelliptic Shimura curves attached to an indefnite quaternion algebra over Q and Atkin-Lehner quotients of them. It exploits Cerednik-Drinfeld's non-archimedean uniformisation of…

Number Theory · Mathematics 2014-02-26 Santiago Molina

We give explicit formulas for the number of distinct elliptic curves over a finite field, up to isomorphism, in two families of curves introduced by C.~Doche, T.~Icart and D.~R. Kohel.

Algebraic Geometry · Mathematics 2015-10-08 Reza Rezaeian Farashahi , Mehran Hosseini

We present new higher-order quadratures for a family of boundary integral operators re-derived using the approach introduced in [Kublik, Tanushev, and Tsai - J. Comp. Phys. 247: 279-311, 2013]. In this formulation, a boundary integral over…

Numerical Analysis · Mathematics 2022-04-04 Federico Izzo , Olof Runborg , Richard Tsai

We derive a new bound for some bilinear sums over points of an elliptic curve over a finite field. We use this bound to improve a series of previous results on various exponential sums and some arithmetic problems involving points on…

Number Theory · Mathematics 2013-08-23 Omran Ahmadi , Igor E. Shparlinski

Let $X$be a complex hyperelliptic curve of genus two equipped with the canonical metric $ds^2$. We study mean field equations on complex hyperelliptic curves and show that the Gaussian curvature function of $(X,ds^2)$ determines an explicit…

Differential Geometry · Mathematics 2017-06-01 Jia-Ming , Liou

We classify rational cuspidal curves of degrees 6 and 7 in the complex projective plane, up to symplectic isotopy. The proof uses topological tools, pseudoholomorphic techniques, and birational transformations.

Geometric Topology · Mathematics 2020-09-22 Marco Golla , Fabien Kütle

In this work we explore the construction of abelian extensions of number fields with exactly one complex place using multivariate analytic functions in the spirit of Hilbert's 12th problem. To this end we study the special values of the…

Number Theory · Mathematics 2024-12-20 Pierre L. L. Morain

In a previous article, a universal linear algebraic model was proposed for describing homogeneous conformal geometries, such as the spherical, Euclidean, hyperbolic, Minkowski, anti-de Sitter and Galilei planes. This formalism was…

Metric Geometry · Mathematics 2018-04-12 Mate Lehel Juhasz

In this paper we give an upper bound on the number of rational points on an irreducible curve $C$ of degree $\delta$ defined over a finite field $\mathbb{F}_q$ lying on a Frobenius classical surface $S$ embedded in $\mathbb{P}^3$. This…

Algebraic Geometry · Mathematics 2022-05-16 Elena Berardini , Jade Nardi

In recent years, many useful applications of the polynomial method have emerged in finite geometry. Indeed, algebraic curves, especially those defined by R\'edei-type polynomials, are powerful in studying blocking sets. In this paper, we…

Algebraic Geometry · Mathematics 2023-10-26 Shamil Asgarli , Dragos Ghioca , Chi Hoi Yip

In this paper we extend the Lie theory of integration in two different ways. First we consider a finite dimensional Lie algebra of vector fields and discuss the most general conditions under which the integral curves of one of the fields…

Mathematical Physics · Physics 2019-07-18 J. F. Cariñena , F. Falceto , J. Grabowski , M. F. Rañada

We give a classification of all possible $2$-adic images of Galois representations associated to elliptic curves over $\mathbb{Q}$. To this end, we compute the 'arithmetically maximal' tower of 2-power level modular curves, develop…

Number Theory · Mathematics 2018-01-22 Jeremy Rouse , David Zureick-Brown

We find equations for the higher dimensional analogue of the modular curve X_0(3) using Mumford's algebraic formalism of algebraic theta functions. As a consequence, we derive a method for the construction of genus 2 hyperelliptic curves…

Number Theory · Mathematics 2008-01-16 R. Carls , D. Kohel , D. Lubicz

Let $E$ be an elliptic curve over $\mathbb{Q}$. Let $p$ be an odd prime and $\iota: \overline{\mathbb{Q}}\hookrightarrow \mathbb{C}_p$ an embedding. Let $K$ be an imaginary quadratic field and $H_{K}$ the corresponding Hilbert class field.…

Number Theory · Mathematics 2018-01-03 Ashay A. Burungale , Haruzo Hida , Ye Tian

We show that if f: X --> Y is a finite, separable morphism of smooth curves defined over a finite field F_q, where q is larger than an explicit constant depending only on the degree of f and the genus of X, then f maps X(F_q) surjectively…

Number Theory · Mathematics 2008-06-09 Robert M. Guralnick , Thomas J. Tucker , Michael E. Zieve

We propose a detailed study of a canonical bound which relates the numbers of rational points of a curve over a finite field with that over its quadratic extension. Alternative proofs which make a connection with the variance enable to…

Algebraic Geometry · Mathematics 2026-05-27 Yves Aubry , Fabien Herbaut , Julien Monaldi

In algebraic geometry, it is important to provide effective parametrizations for families of curves, both in theory and in practice. In this paper, we present such an effective parametrization for the moduli of genus-$5$ curves that are…

Algebraic Geometry · Mathematics 2023-11-21 Momonari Kudo , Shushi Harashita

One of the big questions in the area of curves over finite fields concerns the distribution of the numbers of points: Which numbers occur as the number of points on a curve of genus $g$? The same question can be asked of various subclasses…

Algebraic Geometry · Mathematics 2010-12-02 Gary McGuire , Alexey Zaytsev
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