Intersections of irreducible components of the Emerton-Gee stack for GL_2

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Number Theory Seminar
September 26, 2022
4:00PM - 5:00PM
Location
Zoom

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Add to Calendar 2022-09-26 16:00:00 2022-09-26 17:00:00 Intersections of irreducible components of the Emerton-Gee stack for GL_2 Title:  Intersections of irreducible components of the Emerton-Gee stack for GL_2 Speaker:  Kalyani Kansal (Johns Hopkins) Abstract:  Let K be a finite extension of Q_p. In a 2020 paper, Caraiani, Emerton, Gee, and, Savitt constructed a moduli stack of two dimensional mod p representations of the Galois group of K. We compute criteria for codimension one intersections of the irreducible components of this stack, and interpret them in sheaf-theoretic terms. URL associated with Seminar:  https://research.math.osu.edu/numbertheory/ Zoom:  email patrikis.1 for Zoom link   Zoom Department of Mathematics math@osu.edu America/New_York public
Description

Title:  Intersections of irreducible components of the Emerton-Gee stack for GL_2

Speaker:  Kalyani Kansal (Johns Hopkins)

Abstract:  Let K be a finite extension of Q_p. In a 2020 paper, Caraiani, Emerton, Gee, and, Savitt constructed a moduli stack of two dimensional mod p representations of the Galois group of K. We compute criteria for codimension one intersections of the irreducible components of this stack, and interpret them in sheaf-theoretic terms.

URL associated with Seminar:  https://research.math.osu.edu/numbertheory/

Zoom:  email patrikis.1 for Zoom link

 

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