arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2406.01985math.NTmath.AG
收藏

关于具有潜在良好超奇异约化的椭圆曲线的 Kodaira 类型

On the Kodaira types of elliptic curves with potentially good supersingular reduction

Haiyang Wang

AI总结:

本文研究了在扩张 $L/K$ 为度为 $2$ 的野分歧且曲线 $E/K$ 具有潜在良好超奇异约化时,对椭圆曲线 Kodaira 类型施加的限制,并分析了同源椭圆曲线的可能约化类型。

摘要:

设 $\mathcal{O}_K$ 为具有分式域 $K$ 的 Henselian 离散赋值环。假设 $\mathcal{O}_K$ 具有代数闭剩余域 $k$。设 $E/K$ 为具有加性约化的椭圆曲线。半稳定约化定理断言,存在一个极小扩张 $L/K$,使得基变换 $E_L/L$ 具有半稳定约化。人们自然会问,半稳定约化和扩张 $L/K$ 的特定性质是否会对 $E/K$ 的特殊纤维可能具有的 Kodaira 类型施加限制。在本文中,我们研究了当扩张 $L/K$ 是度为 $2$ 的野分歧,且曲线 $E/K$ 具有潜在良好超奇异约化时,对约化类型施加的限制。我们还分析了具有这些性质的两条同源椭圆曲线的可能约化类型。

英文摘要:

Let $\mathcal{O}_K$ be a Henselian discrete valuation domain with field of fractions $K$. Assume that $\mathcal{O}_K$ has algebraically closed residue field $k$. Let $E/K$ be an elliptic curve with additive reduction. The semi-stable reduction theorem asserts that there exists a minimal extension $L/K$ such that the base change $E_L/L$ has semi-stable reduction. It is natural to wonder whether specific properties of the semi-stable reduction and of the extension $L/K$ impose restrictions on what types of Kodaira type the special fiber of $E/K$ may have. In this paper we study the restrictions imposed on the reduction type when the extension $L/K$ is wildly ramified of degree $2$, and the curve $E/K$ has potentially good supersingular reduction. We also analyze the possible reduction types of two isogenous elliptic curves with these properties.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑