English

Noncommutative Iwasawa theory arising from Hecke algebras

Number Theory 2020-02-03 v2

Abstract

Let pp be an odd prime and ff be a nearly ordinary Hilbert modular Hecke eigenform defined over a totally real field FF. Let I\mathbb{I} be an irreducible component of the universal nearly ordinary or locally cyclotomic deformation of the representation of GalF\mathrm{Gal}_F that is associated to ff. We study the deformation rings over a pp-adic Lie extension FF_\infty that contains the cyclotomic Zp\mathbb{Z}_p-extension of FF. More precisely, we prove a control theorem about these rings. We introduce a category MHI(G)\mathfrak{M}_{\mathcal H}^{\mathbb I}(\mathcal G), where G=Gal(F/F)\mathcal G=\mathrm{Gal}(F_\infty/F) and H=Gal(F/Fcyc)\mathcal H=\mathrm{Gal}(F_\infty/F_{cyc}), which is the category of modules which are torsion with respect to a certain Ore set, which generalizes the Ore set introduced by Venjakob. For Selmer groups which are in this category, we formulate a Main conjecture in the spirit of Noncommutative Iwasawa theory. We then set up a strategy to prove the conjecture by generalizing work of Burns, Kato, Kakde, and Ritter and Weiss. This requires appropriate generalizations of results of Oliver and Taylor, and Oliver on Logarithms of certain KK-groups, which we have presented here.

Keywords

Cite

@article{arxiv.1608.00392,
  title  = {Noncommutative Iwasawa theory arising from Hecke algebras},
  author = {Chandrakant Aribam},
  journal= {arXiv preprint arXiv:1608.00392},
  year   = {2020}
}

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