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On Constant Terms of Eisenstein Series

Number Theory 2020-10-05 v1

Abstract

We calculate the constant terms of certain Hilbert modular Eisenstein series at all cusps. Our formula relates these constant terms to special values of Hecke LL-series. This builds on previous work of Ozawa, in which a restricted class of Eisenstein series were studied. Our results have direct arithmetic applications---in separate work we apply these formulas to prove the Brumer-Stark conjecture away from p=2p=2 and to give an exact analytic formula for Brumer-Stark units.

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Cite

@article{arxiv.2010.00650,
  title  = {On Constant Terms of Eisenstein Series},
  author = {Samit Dasgupta and Mahesh Kakde},
  journal= {arXiv preprint arXiv:2010.00650},
  year   = {2020}
}

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30 pages