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arXiv 2201.07825math.NT
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超椭圆曲线的潜在好约化

Potential good reduction of hyperelliptic curves

Robin Visser

摘要:

令$K$为数字字段,而$g \geq 2$为正整数。定义$c_K(g)$为最小整数$n$,使得存在无穷多个亏格$g$超椭圆曲线$C/K$的$\overline{K}$ -同构类,其中$K$中的所有Weierstrass点在$K$中的$n$素数之外具有潜在的好约化.我们证明了$c_K(g) > π_{K, \textrm{odd}}(2g) + 1$,其中$π_{K, \textrm{odd}}(n)$表示$K$中范数不大于$n$的奇素数的个数,并总结了关于$c_K(g)$上界的各种条件和无条件结果.

英文摘要:

Let $K$ be a number field, and $g \geq 2$ a positive integer. We define $c_K(g)$ as the smallest integer $n$ such that there exist infinitely many $\overline{K}$-isomorphism classes of genus $g$ hyperelliptic curves $C/K$ with all Weierstrass points in $K$ having potentially good reduction outside $n$ primes in $K$. We show that $c_K(g) > π_{K, \textrm{odd}}(2g) + 1$, where $π_{K, \textrm{odd}}(n)$ denotes the number of odd primes in $K$ with norm no greater than $n$, as well as present a summary of various conditional and unconditional results on upper bounds for $c_K(g)$.

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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