Algebraic Geometry Seminar

Friday 24 March 2023,  11.00am
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Venue: Ramanujan Hall, Department of Mathematics

Host: Sudarshan Gurjar

Speaker: Nitin Nitsure

Affiliation: TIFR, Mumbai (retd)

Title: Local Criterion of Flatness-II

GGT Seminar 

Date and time: Friday 24 March, 2023 at 12:35 pm

Venue: Room No 114, Department of Mathematics

Host: Rekha Santhanam

Speaker:  Ankit Rai 

Affiliation: IIT Bombay

Title: The Ping-Pong Lemma.

Abstract : The talk will be based on the chapter titled The Ping-Pong Lemma from the book Office hours with a geometric group theorist. The  chapter consists of ping-pong lemma and it's application(s), a construction of Farey tree and a gentle introduction to hyperbolic upper half plane.

CACAAG seminar

4 PM Friday, 24 March 2023

Please note the deviation in the time from the previous seminars.

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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: h-vectors of Polytopes and Toric Geometry.

Abstract:  We discuss unimodality questions on h-vectors of polytopes and sketch an approach via toric geometry.

Virtual Commutative Algbera Seminar

Friday, 24 March 2023, 6.30 p.m.

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Venue: meet.google.com/upz-rfxh-uob

Host: J. K. Verma

Speaker: Takumi Maruyama

Affiliation: Purdue University, USA

Title: Uniform bounds on symbolic powers in regular rings via closure theory

Abstract: The containment problem asks: For a fixed ideal I, which symbolic powers of I are contained in an ordinary power of I? We present a closure-theoretic proof of the theorem which says that for ideals I in regular rings R, there is a uniform containment of symbolic powers of I in ordinary powers of I.