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arXiv 2602.21047math.NT
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GL₂型阿贝尔簇上的torsion点

Torsion points on $\rm{GL}_2$-type abelian varieties

Max Planck Institute for Mathematics(马克斯·普朗克数学研究所);Dipartimento di Matematica, Università di Padova(帕多瓦大学数学系)

Jessica Alessandrì, Nirvana Coppola

AI总结:

研究GL₂型阿贝尔簇的torsion点逆问题,提出模阿贝尔簇上torsion阶的猜想列表。

摘要:

众所周知,数域上阿贝尔簇的有理torsion点注入到任何足够大的素数模下的reduction,因此torsion群的阶整除每个素数处reduction点大小的最大公约数。受Katz 1981年论文启发,本文研究此问题的逆向情况,并为有理数域上维数不超过5的模阿贝尔簇提出可能的torsion阶猜想列表。

英文摘要:

It is well known that the order of the torsion group of an abelian variety over a number field divides the greatest common divisor of the sizes of points on the reduction at each prime (except for an explicit finite set). Drawing inspiration from Katz's Inventiones paper (1981), we investigate the converse to this for abelian varieties of \(\rm GL_2\)-type and exhibit a tentative list of possible rational torsion orders for modular abelian varieties over \(\mathbb Q\) of dimension up to \(5\).

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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