Fast change of level and applications to isogenies
Fast change of level and applications to isogenies
复制标题
水平的快速变化和同基因的应用
DOI:
10.1007/s40993-022-00407-9
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发表时间:
2023
影响因子:
0.8
通讯作者:
Robert, Damien
中科院分区:
文献类型:
--
作者:
Lubicz, David;Robert, Damien
Letbe a dimensiongabelian variety together with a levelntheta structure over a fieldkof odd characteristic. We thus denote bythe associated standard basis. For a positive integerrelatively prime tonand the characteristic ofk, we study change of level algorithms which allow one to compute leveltheta functionsfrom the knowledge of levelntheta functionsor vice versa. The classical duplication formulas are an example of change of level algorithm to go from levelnto level 2n. The main result of this paper states that there exists an algorithm to go from levelnto levelinoperations ink. We derive an algorithm to compute an isogenyfrom the knowledge ofandisotropic for the Weil pairing which computesf(x) forinoperations ink. We remark that this isogeny computation algorithm is of quasi-linear complexity in the size ofK.
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影响因子:
0.8
作者:
Alina Dudeanu;Dimitar Jetchev;Damien Robert;Marius Vuille
通讯作者:
Marius Vuille
影响因子:
1.7
作者:
J. Igusa
通讯作者:
J. Igusa
DOI:
10.1007/978-3-642-65315-5_4
发表时间:
1972
期刊:
Math. Comput.
影响因子:
--
作者:
J. Igusa
通讯作者:
J. Igusa
DOI:
10.1090/mcom/3672
发表时间:
2021
期刊:
Math. Comput.
影响因子:
--
作者:
M. Kirschmer;Fabien Narbonne;C. Ritzenthaler;Damien Robert
通讯作者:
Damien Robert
影响因子:
1
作者:
J. Couveignes;Tony Ezome
通讯作者:
Tony Ezome