September 7, 2020 - September 11, 2020
Public Access Category: All |
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- Time:
- 3:00pm-4:00pm
- Description:
Date and Time: Monday 07 September, 03.00pm - 04.00pm (joining time:
2.45pm - 3.00pm)
Meeting link: http://meet.google.com/aqe-hgbk-jpf
Speaker: Tamalika Koley, Indian Statistical Institute
Title: Current Status data with competing risks and missing failure types
Abstract:
Various studies on current status data with or without competing risks are present in the literature. In competing risks set up missing or uncertainty in failure types is a very common phenomenon. When observation on true failure type is not available, one observes a set of possible types containing the true cause. This gives rise to uncertainty in the true cause for the occurrence of the event of interest. As per our knowledge, the missing failure types in current status data with competing risks has not received much attention. The main purpose of this work is to focus and highlight this less-explored area of research. Throughout, for simplicity it is worked with two competing risks and both parametric and non-parametric analyses are carried out.
- Time:
- 4:00pm-5:00pm
- Description:
Speaker: Sarbeswar Pal, IISER Trivandrum
Time: Monday 7th September 4 to 5pm (joining time 3.50pm)
Google Meet Link: https://meet.google.com/wnf-ywcy-ozi
Title: Irreducibility of the moduli space of vector bundles over a very
general sextic surface.
Abstract: In this talk we will discuss the irreducibility question of the
moduli space of vector bundles over surfaces. More precisely we will
study the irreducibility question over a very general sextic surface. Our
technique is to use O’Grady’s method of deformation to the boundary as it
was exploited by Nijsse in the case of a very general quintic
hypersurface. We will discuss the main difficulties of using Nijsse's
method and how to overcome that.
- Time:
- 6:30pm
- Description:
- Date and Time: 8 September 2020, 6:30 pm IST/ 1:00 pm GMT/ 09:00 am EDT
(joining time : 6:15 pm IST - 6:30 pm IST)
Google Meet link: https://meet.google.com/tmh-yngo-ksk
Speaker: Irena Swanson, Purdue University
Title: Primary decomposition and powers of ideals
Abstract: This talk is about associated primes of powers of an ideal in
Noetherian commutative rings. Brodmann proved that the set of associated
primes stabilizes for large powers. In general, the number of associated
primes can go up or down as the exponent increases. This talk is about
sequences $\{ a_n \}$ for which there exists an ideal $I$ in a Noetherian
commutative ring $R$ such that the number of associated primes of $R/I^n$
is $a_n.$ This is a report on my work with Sarah Weinstein, with Jesse Kim
and ongoing work with Roswitha Rissner.
- Time:
- 3:00pm-4:00pm
- Description:
- Speaker: Sarbeswar Pal, IISER Trivandrum
Time: Friday 11th September 3 to 4 pm (joining time 2.50pm)
Google Meet Link: https://meet.google.com/qvo-kduy-yco
Title: Irreducibility of the moduli space of vector bundles over a very
general sextic surface.
Abstract: In this talk we will discuss the irreducibility question of the
moduli space of vector bundles over surfaces. More precisely we will
study the irreducibility question over a very general sextic surface. Our
technique is to use O’Grady’s method of deformation to the boundary as it
was exploited by Nijsse in the case of a very general quintic
hypersurface. We will discuss the main difficulties of using Nijsse's
method and how to overcome that.