Computing the geometric endomorphism ring of a genus-2 Jacobian
Computing the geometric endomorphism ring of a genus-2 Jacobian
复制标题
计算 genus-2 雅可比行列式的几何自同态环
DOI:
10.1090/mcom/3358
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
D. Lombardo
中科院分区:
文献类型:
--
作者:
D. Lombardo
We describe an algorithm, based on the properties of the characteristic polynomials of Frobenius, to compute $\operatorname{End}_{\overline{K}}(A)$ when $A$ is the Jacobian of a nice genus-2 curve over a number field $K$. We use this algorithm to confirm that the description of the structure of the geometric endomorphism ring of $\operatorname{Jac}(C)$ given in the LMFDB ($L$-functions and modular forms database) is correct for all the genus 2 curves $C$ currently listed in it. We also discuss the determination of the field of definition of the endomorphisms in some special cases.
影响因子:
2
作者:
Costa, Edgar;Mascot, Nicolas;Sijsling, Jeroen;Voight, John
通讯作者:
Voight, John
影响因子:
--
作者:
Booker, Andrew R.;Sijsling, Jeroen;Yasaki, Dan
通讯作者:
Yasaki, Dan