Seminar series
Date
Fri, 19 Nov 2021
Time
10:00 -
11:30
Location
N3.12
Speaker
Tasuki Kinjo
Organisation
Kavli IPMU
[REMOTE TALK]
In this talk, we will propose a new construction of the virtual fundamental classes of quasi-smooth derived schemes using the vanishing cycle complexes. This is based on the dimensional reduction theorem of cohomological Donaldson—Thomas invariants which can be regarded as a variant of the Thom isomorphism. We will also discuss a conjectural approach to construct DT4 virtual classes using the vanishing cycle complexes.
Zoom link: https://us02web.zoom.us/j/86267335498?pwd=R2hrZ1N3VGJYbWdLd0htZzA4Mm5pd…