Barcelona Fall Workshop on Number Theory II

Dihedral Galois representations and CM forms

Presenters

Nicolas Billerey (to be confirmed) (Univ. Clermond-Ferrand)

Abstract

Starting from congruences modulo 23 of Ramanujan's tau function, we discuss the question to decide whether a given dihedral mod l Galois representation arises from a CM form with prescribed optimal type. Joint work with Filippo Nuccio.

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