V Balaji, CMI, Chennai

Description
Speaker: V Balaji, CMI, Chennai

Time: Monday 12th October 4 to 5pm (joining time 3.45 pm IST)

Google Meet Link: https://meet.google.com/qvo-kduy-yco

Title: Torsors on semistable curves and the problem of degenerations.

Abstract: Let G be an almost simple, simply connected algebraic group over
the field of complex numbers. In this talk I will discuss a basic question
in the classification of G-torsors on curves, which is to construct a flat
degeneration of the moduli stack G-torsors on a smooth projective curve
when the curve degenerates to an irreducible nodal curve.The question has
a long history and I will discuss the classical results and discuss the
new difficulties and solutions.
Date
Mon, October 12, 2020
Start Time
4:00pm-5:00pm IST
Duration
1 hour
Priority
5-Medium
Access
Public
Created by
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Updated
Sun, October 11, 2020 3:31pm IST