Speaker: M. S. Raghunathan
Title: Lie algebra cohomology
Time: 16:00 - 17:00, Monday, October 1
Venue: Ramanujan Hall, Department of Mathematics
Note: This is the first of two lectures. Also please note the change in time.
Time:
5:15pm
Location:
Room. 215
Description:
Popular talk in Mathematics
Venue: Ramanujan Hall
Time & Date: 5:15 PM on Monday October 1st 2018.
Speaker: Mayukh Mukherjee
Title: An introduction to spectral problems and shape optimization
Abstract: We will start by giving some broad overview of the general
area of inverse spectral theory and the associated area of
so-called shape optimization. Then, we will make an attempt
to give a proof of the classical Faber-Krahn theorem.
MSc students are encouraged to attend.
Please note tea and snack will be available in Room 215 at 5:00 PM
Time:
2:30pm
Location:
Ramanujan Hall, Department of Mathematics
Description:
Algebraic geometry seminar
Date& Time: Wednesday, 3rd October at 2.30 pm
Venue: Ramanujan Hall
Speaker: Piotr Pragacz, Polish Academy of Sciences, Warsaw
https://www.impan.pl/~pragacz/
Title: Gysin maps, duality, and Schubert classes
Abstract: We establish a Gysin formula for Kempf-Laksov flag
bundles and prove a duality formula for Grassmann bundles.
We then combine them to study Schubert bundles, their
push-forwards and fundamental classes.
This is a joint work with Lionel Darondeau.
Time:
4:00pm
Location:
Ramanujan Hall, Department of Mathematics
Description:
Mathematics Colloquium
Date & Time: 3rd October, Wednesday, at 4pm
Venue: Ramanujan Hall
Speaker: Debanjana Mitra
Title: An application of microlocal analysis to control theory.
Abstract: In the first part of my talk, some preliminaries on microlocal
analysis will be discussed. In the second part of the talk, some
techniques to study the controllability of a system using microlocal
analysis will be explained. As an example of this approach, the lack of
null controllability of viscoelastic flows will be discussed.
Time:
2:00pm-3:30pm
Location:
Room. 215
Description:
Commutative algebra seminar
Thursday, 4 October, 2018
Room 215
2.00-3.30
Speaker: J. K. Verma
Title: The Hoskin-Deligne formula for complete ideals in two-dimensional regular local rings.
Abstract: Let I be a complete m-primary ideal in a two dimensional regular local ring R.
The Hoskin-Deligne (HD) formula expresses the length of the Artin local ring R/I in terms of
the m-adic order of the transforms of I in various local quadratic transforms of R.
It uses a structure theorem of Zariski and Abhyankar about two dimensional regular
local rings which birationally dominate R. The HD formula implies several fundamental
theorems about complete ideals proved by Zariski, Lipman, Rees and Huneke-Sally. We
shall prove these in a series of talks.