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Zeta Morphisms for Rank Two Universal Deformations

Shimura Varieties and L-Functions March 13, 2023 - March 17, 2023

March 16, 2023 (09:00 AM PDT - 10:00 AM PDT)
Speaker(s): Kentaro Nakamura (Saga University)
Location: SLMath: Eisenbud Auditorium, Online/Virtual
Tags/Keywords
  • Kato’s Euler system

  • p-adic Langlands correpondence

  • completed cohomology

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Abstract

In his work on the Iwasawa main conjecture for elliptic Hecke eigen cusp newforms, Kazuya Kato constructed a map which we call the zeta morphism whose target is the Iwasawa cohomology of the associated p-adic Galois representations. Combining Fukaya-Kato’s idea for constructing the zeta morphisms for Hida families with many deep results in the p-adic (local and global) Langlands correspondence for GL_2/Q, we extend this map for the universal deformations of odd absolutely irreducible mod p Galois representations of rank two. As an application, we prove a theorem, which roughly says that, under some mu= 0 assumption, the Iwasawa main conjecture (without p-adic L- function) for one modular form implies the same conjecture for arbitrary congruent modular forms.

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