奇导体的仿模阿贝尔簇
Paramodular Abelian Varieties of Odd Conductor
摘要:
对具有平凡自同态End_QA = Z的有理交换曲面A给出了一个精确的可检验的模性猜想.这与我们的例子、不存在性结果和C. Poor和D. S.袁权2西格尔仿模形式。我们得到相当精确的信息的半稳定阿贝尔簇A的ell-division领域,主要是当A[ell]是可约的,考虑扩展问题的小组计划的小秩。例如,我们的一般结果意味着阿贝尔曲面的最小素导体是277。
英文摘要:
A precise and testable modularity conjecture for rational abelian surfaces A with trivial endomorphisms, End_Q A = Z, is presented. It is consistent with our examples, our non-existence results and recent work of C. Poor and D. S. Yuen on weight 2 Siegel paramodular forms. We obtain fairly precise information on ell-division fields of semistable abelian varieties A, mainly when A[ell] is reducible, by considering extension problems for groups schemes of small rank. Our general results imply, for instance, that the least prime conductor of an abelian surface is 277.
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