8:00am 

9:00am 

10:00am 

11:00am 
[11:30am]RV Gurjar
 Description:
 Commutative algebra seminar
30 Jan 2018
11.301.00
Room 215
Speaker: RV Gurjar
Title. A geometric proof of Minkowski inequality (Teissier's
Conjecture), and related results.
Abstract. Using resolution of singularity we will give a geometric proof of
Teissier's Conjecture about the multiplicity of the product of two ideals.
A stronger form of this proved in Jugal Verma's lecture will also be
proved. We will also give a short proof of C.P.Ramanujam's geometric
interpretation of the multiplicity of a local ring.

12:00pm 
1:00pm 

2:00pm 
[2:30pm]Vincent Sécherre, Université de Versailles SaintQuentin
 Description:
 Number Theory Seminar
Speaker: Vincent Sécherre, Université de Versailles SaintQuentin
Date & Time: Tuesday, January 30, 14:3015:30.
Venue: Ramanujan Hall
Title: Supercuspidal representations of GL(n,K) distinguished by GL(n,F),
with K/F a quadratic extension of padic fields.
Abstract: Let p be an odd prime number and K/F be a quadratic extension of
padic fields. Say that an irreducible representation of GL(n,K) is
distinguished by GL(n,F) if its vector space carries a GL(n,F)invariant
nonzero linear form. Any distinguished representation is isomorphic to the
contragredient of its Gal(K/F)conjugate, but the converse is not true. We
will explain how to canonically associate to any
Gal(K/F)selfcontragredient supercuspidal representation of GL(n,K) a
finite tamely ramified extension T of F and a character of the
multiplicative group of T, by using BushnellKutzko’s theory of types, and
how to get a necessary and sufficient condition on this character for this
supercuspidal representation to be distinguished.

3:00pm 
4:00pm 

5:00pm 

