Hensel-lifting torsion points on Jacobians and Galois representations
Hensel-lifting torsion points on Jacobians and Galois representations
复制标题
雅可比行列式和伽罗瓦表示法上的亨塞尔提升扭点
DOI:
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发表时间:
2018
影响因子:
2
通讯作者:
Nicolas Mascot
中科院分区:
文献类型:
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作者:
Nicolas Mascot
Let $\rho$ be a mod $\ell$ Galois representation. We show how to compute $\rho$, given the characteristic polynomial of the image of the Frobenius at one prime $p$ and a curve $C$ whose Jacobian contains $\rho$ in its $\ell$-torsion. The main ingredient is a method to $p$-adically lift torsion points on a Jacobian in the framework of Makdisi's algorithms.