Quantitative level lowering
Quantitative level lowering
复制标题
量级降低
DOI:
10.1353/ajm.2016.0019
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发表时间:
2016
影响因子:
1.7
通讯作者:
Benjamin E. Lundell
中科院分区:
文献类型:
--
作者:
Benjamin E. Lundell
We give a quantitative version of Ribet's famous level lowering result for modular forms. Specifically, we measure how certain congruence ideals change as we vary the level. By studying the deformation theory of the Galois representation attached to the modular form, we can use the numerical criterion of Wiles to relate congruence ideals to Selmer groups, and thereby reduce the problem to a calculation in Galois cohomology.