Posted in

Speaker:

Debargha Banerjee
Affiliation:

IISER, Pune/MPI
Date:

Wed, 2017-09-27 14:15 - 15:15
Location:

MPIM Lecture Hall
Parent event:

Number theory lunch seminar Let $f$ be a primitive non-CM cusp form of weight two or more. The endomorphism

algebra X_f (attached to f) is a 2-torsion element in the Brauer group of some number field.

We give a formula for the ramification of X_f locally for all places lying above

supercuspidal primes. For p=2, we also treat the interesting case where the image of the

Weil-Deligne representation attached to f is an exceptional group.

This is a joint work with Tathagata Mandal.

October 4, there is the Aach-Bonn-Koeln-Lille-Siegen automorphic form seminar taken

place in Cologne and we will be going with a group there.

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