Denominators of the Weierstrass coefficients of the canonical lifting

Speaker:Delong Li (University of Tenne
Time: 周五, 2021-01-08 20:00-21:00
Venue:腾讯会议ID:339 627 402

Description

Given an ordinary elliptic curve, the Weierstrass coefficients of its canonical lifting a, b can be given by explicit formulas. We study the coordinates of these a, b. We show that the denominators have only three possible factors, and we give an upper bound for the power of each factor. We also study the universal property of these formulas.
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