Geometric Group Theory (GGT)  Seminar

12.30 pm on 31 March 2023

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Venue: Room 114

Host: Rekha Santhanam

Speaker: Soumyadeb Samanta

Affiliation: IIT Bombay

Title: Quasi-isometries

Abstract: In this talk, I will give an introduction to quasi-isometries on metric spaces and groups, and discuss some basic results concerning them. Then we will see the statement and proof of the celebrated Milnor-Schwarz lemma.

CCAAG Seminar

4 pm on Friday, 31 March 2023

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Venue: Ramanujan Hall

Host: Madhusudan Manjunath

Speaker: Madhusudan Manjunath

Affiliation: IIT Bombay

Title: Unimodality and Log concavity in Algebra, Geometry, and 
Combinatorics

Abstract: We will review the relevant tools from Hodge's theory.

Virtual commutative algebra seminar

6.30 pm on Friday, 31 March 2023

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Venue: meet.google.com/rhf-jzen-fyf

Host: J. K. Verma

Speaker: Alexandra  Seceleanu

Affiliation: University of Nebraska-Lincoln

 Title: Principal symmetric ideals

Abstract: Consider a homogeneous polynomial f in variables x_1,...,x_n. The set of polynomials obtained from f by permuting the variables in all possible ways generates an ideal, which we call a principal symmetric ideal. What can we say about the Betti numbers of a principal symmetric ideal? I will give a general answer in this talk. This is joint work with Megumi Harada and Liana Sega.