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On the topology of Hitchin fibrations

Date
Thursday, June 18, 2020 14:00 - 16:00
Speaker
Junliang Shen (Massachusetts Institute of Technology)
Location
https://mathseminars.org/seminar/AGNTISTA
Series
Seminar/Talk
Tags
Mathematics and CS Seminar, mathematical_seminar_ics
Host
Tamas Hausel
Contact

The topology of the Hitchin fibrations plays crucial role in geometry, math physics, and representation theory. In this talk, we will discuss two questions arised naturally in the study of Hitchin fibrations in view of the P=W conjecture: (a) How to locate the tautological classes in the perverse filtration? (b) Is the perverse filtration multiplicative for Hitchin fibrations? 
I will explain how connnections to the geometry of some special algebraic varieties (Hilbert schemes, abelian surfaces, hyper-Kahler manifolds)  lead to progress to answering these questions.

Based on joint work with Mark de Cataldo, Davesh Maulik, Qizheng Yin, Zili Zhang.


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