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arXiv 1707.04861math.NT
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$\mathbb Q$曲线的强模模型

Strongly modular models of $\mathbb Q$-curves

Peter Bruin, Andrea Ferraguti

摘要:

设$E$是一条没有复乘的$\mathbb Q$曲线.我们解决的问题,决定是否$E$是几何同构的强模块$\mathbb Q$曲线。我们表明,这个问题有一个积极的答案,当且仅当$E$有一个模型,是完全定义在一个阿贝尔数域。其次,如果$E$是在二次或双二次数域$L$上完全定义的,我们根据$L$的算术对$L$上的$E$的所有强模扭转进行分类。此外,我们将展示如何确定这些曲折来,直到ismartan,从一个子字段的$L$。

英文摘要:

Let $E$ be a $\mathbb Q$-curve without complex multiplication. We address the problem of deciding whether $E$ is geometrically isomorphic to a strongly modular $\mathbb Q$-curve. We show that the question has a positive answer if and only if $E$ has a model that is completely defined over an abelian number field. Next, if $E$ is completely defined over a quadratic or biquadratic number field $L$, we classify all strongly modular twists of $E$ over $L$ in terms of the arithmetic of $L$. Moreover, we show how to determine which of these twists come, up to isogeny, from a subfield of $L$.

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。

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