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Reconstruction of one-punctured elliptic curves in positive characteristic by their geometric fundamental groups
manuscripta mathematica ( IF 0.5 ) Pub Date : 2019-09-20 , DOI: 10.1007/s00229-019-01152-7
Akira Sarashina

Our main question is whether the isomorphism class as a scheme of a curve X over an algebraic closure of a finite field can be reconstructed by the etale fundamental group of X. Tamagawa answered this question affirmatively when the genus of X is 0. In this paper, we will discuss the genus 1 case, and prove a similar result when the genus of X is 1, the cardinality of cusps is 1, and the characteristic of X is not equal to 2.

中文翻译:

利用几何基群重建具有正特征的单刺椭圆曲线

我们的主要问题是同构类作为有限域的代数闭包上的曲线 X 的方案是否可以由 X 的 etale 基本群重建。当 X 的属为 0 时,玉川肯定地回答了这个问题。在这篇论文中,我们将讨论属 1 的情况,并证明当 X 的属为 1,尖点的基数为 1,X 的特征不等于 2 时的类似结果。
更新日期:2019-09-20
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