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In this article we explicitly determine the structure of the Weierstrass semigroups $H(P)$ for any point $P$ of the Suzuki curve $\mathcal{S}_q$. As the point $P$ varies, exactly two possibilities arise for $H(P)$: one for the…

组合数学 · 数学 2018-11-21 Daniele Bartoli , Maria Montanucci , Giovanni Zini

In 2017, D. Skabelund constructed a maximal curve over $\mathbb{F}_{q^4}$ as a cyclic cover of the Suzuki curve. In this paper we explicitly determine the structure of the Weierstrass semigroup at any point $P$ of the Skabelund curve. We…

代数几何 · 数学 2020-05-01 Peter Beelen , Leonardo Landi , Maria Montanucci

In this paper, we study configurations of three rational points on the Hermitian curve over $\mathbb{F}_{q^2}$ and classify them according to their Weierstrass semigroups. For $q>3$, we show that the number of distinct semigroups of this…

代数几何 · 数学 2020-11-17 Gretchen L. Matthews , Dane Skabelund , Michael Wills

We determine the Weierstrass semigroup $H(P_{\infty}, P_{1}, \ldots , P_{m})$ at several points on the $GK$ curve. In addition, we present conditions to find pure gaps on the set of gaps $G(P_{\infty}, P_{1}, \ldots , P_{m})$. Finally, we…

代数几何 · 数学 2017-05-17 Alonso S. Castellanos , Guilherme Tizziotti

We show that for any numerical semigroup H of genus g at most 6, the locus of Weierstrass points on curves of genus g with Weierstrass semigroup H is irreducible and that for all but possibly two semigroups it is stably rational.

代数几何 · 数学 2012-05-04 Evan M. Bullock

We determine the Weierstrass semigroup $H(P_\infty,P_1,\ldots,P_m)$ at several rational points on the maximal curves which cannot be covered by the Hermitian curve introduced by Tafazolian, Teher\'an-Herrera, and Torres. Furthermore, we…

代数几何 · 数学 2021-06-25 Alonso Sepúlveda Castellanos , Maria Bras-Amorós

In this work we study the generalized Weierstrass semigroup $\widehat{H} (\mathbf{P}_m)$ at an $m$-tuple $\mathbf{P}_m = (P_{1}, \ldots , P_{m})$ of rational points on certain curves admitting a plane model of the form $f(y) = g(x)$ over…

代数几何 · 数学 2017-09-04 Wanderson Tenório , Guilherme Tizziotti

In this article we explicitly determine the Weierstrass semigroup at any point and the full automorphism group of a known $\mathbb{F}_{q^2}$-maximal curve $\mathcal{X}_3$ having the third largest genus. This curve arises as a Galois…

代数几何 · 数学 2023-09-21 Peter Beelen , Maria Montanucci , Lara Vicino

In this article we use techniques from coding theory to derive upper bounds for the number of rational places of the function field of an algebraic curve defined over a finite field. The used techniques yield upper bounds if the…

代数几何 · 数学 2012-02-03 Peter Beelen , Diego Ruano

In this work, we are concerned with the structure of sparse semigroups and some applications of them to Weierstrass points. We manage to describe, classify and find an upper bound for the genus of sparse semigroups. We also study the…

代数几何 · 数学 2014-10-14 André Contiero , Carlos Gustavo T. A. Moreira , Paula M. Veloso

In this paper we determine the generalized Weierstrass semigroup $ \widehat{H}(P_{\infty}, P_1, \ldots , P_{m})$, and consequently the Weierstrass semigroup $H(P_{\infty}, P_1, \ldots , P_{m})$, at $m+1$ points on the curves…

代数几何 · 数学 2021-12-16 M. Montanucci , G. Tizziotti

In this work we determine the so-called minimal generating set of the Weierstrass semigroup of certain $m$ points on curves $\mathcal{X}$ with plane model of the type $f(y) = g(x)$ over $\mathbb{F}_{q}$, where $f(T),g(T)\in…

代数几何 · 数学 2017-04-11 A. S. Castellanos , G. Tizziotti

A numerical semigroup is said to be Weierstrass if it is the semigroup of pole orders of rational functions that are regular at all but one point of some compact Riemann surface or smooth algebraic curve. Hurwitz asked in 1892 whether all…

代数几何 · 数学 2026-03-10 David Eisenbud , Frank-Olaf Schreyer

We consider the problem of determining Weierstrass gaps and pure Weierstrass gaps at several points. Using the notion of relative maximality in generalized Weierstrass semigroups due to Delgado \cite{D}, we present a description of these…

代数几何 · 数学 2018-03-26 Wanderson Tenório , Guilherme Tizziotti

In this article we explicitly determine the Weierstrass semigroup at any place of some $\mathbb{F}_{q^2}$-maximal Fermat function fields $\mathcal{F}_m$, namely for $m=(q+1)/2$ and $m=(q+1)/3$. These famous function fields arise as Galois…

代数几何 · 数学 2026-03-02 Peter Beelen , Maria Montanucci , Marie Frank vom Braucke

In this paper we treat several topics regarding numerical Weierstrass semigroups and the theory of Algebraic Geometric Codes associated to a pair $(X, P)$, where $X$ is a projective curve defined over the algebraic closure of the finite…

代数几何 · 数学 2011-04-29 Alessio Del Padrone , Anna Oneto , Grazia Tamone

The {\it Weierstrass semigroup} of pole orders of meromorphic functions in a point $p$ of a smooth algebraic curve $C$ is a classical object of study; a celebrated problem of Hurwitz is to characterize which semigroups ${\rm S} \subset…

代数几何 · 数学 2023-06-27 Ethan Cotterill , Nathan Pflueger , Naizhen Zhang

We consider the structure of rational points on elliptic curves in Weierstrass form. Let x(P)=A_P/B_P^2 denote the $x$-coordinate of the rational point P then we consider when B_P can be a prime power. Using Faltings' Theorem we show that…

数论 · 数学 2007-05-23 Graham Everest , Jonathan Reynolds , Shaun Stevens

In this work, we investigate generalized Weierstrass semigroups in arbitrary Kummer extensions of function field $\mathbb{F}_q(x)$. We analyze their structure and properties, with a particular emphasis on their maximal elements. Explicit…

代数几何 · 数学 2025-04-18 Alonso S. Castellanos , Erik A. R. Mendoza , Guilherme Tizziotti

For each group $G$, $(|G| > 2)$ \, which acts as a full automorphism group on a genus 3 hyperelliptic curve, we determine the family of curves which have 2-Weierstrass points. Such families of curves are explicitly determined in terms of…

代数几何 · 数学 2019-05-28 T. Shaska , C. Shor
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