December 2021
Public Access Category: All
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6:50pm» Mario Kummer (is currently faculty at TU, Dresden).- Time:
- 6:50pm - 8:15pm
- Description:
- Title: "Matroids with the half-plane property and related concepts".
Speaker: Mario Kummer (is currently faculty at TU, Dresden).
Abstract: We will study several properties of bases generating polynomials of
matroids that are related to stability. This includes the half-plane
property or determinantal representability. We will further present a
classification of all matroids on up to eight elements whose bases
generating polynomial is stable. This is joint work with Büşra Sert.
When: Wed Dec 1, 2021 6:50pm – 8:15pm India Standard Time - Kolkata
Joining info: Join with Google Meet
https://meet.google.com/tbr-ewsh-arb?hs=224
- Time:
- 6:30pm
- Description:
- Speaker: Claudiu Raicu, University of Notre Dame, Notre Dame, IN, USA.
Date/Time: 10 December 2021, 6:30pm IST/ 1:00pm GMT / 8:00am ET (joining
time 6:15pm IST).
Gmeet link: meet.google.com/oby-gwst-pko
Title: Cohomology of line bundles on the incidence correspondence.
Abstract: Let X denote the incidence correspondence (or partial flag
variety) parametrizing pairs consisting of a point in projective space and
a hyperplane containing it. I will explain how to characterize the
vanishing and non-vanishing behavior of the cohomology groups of line
bundles on X over an arbitrary field. For the projective plane, the
results are contained in the thesis of Griffith from the 70s, while in
characteristic zero the cohomology groups are described in any dimension
by the Borel-Weil-Bott theorem. Joint work with Zhao Gao.
For more information and links to previous seminars, visit the website of
VCAS: https://sites.google.com/view/virtual-comm-algebra-seminar