Algebra and gometry online seminar 19-02-2021

[Francesco Galuppi]

Dear colleagues,

this is to advertise the weekly seminar of the Algebra and Geometry 
group of the University of Trieste. On Friday, February 19th at 10:30, 
Andrea Ricolfi (SISSA Trieste) will talk about "Higher rank motivic 
Donaldson-Thomas invariants".

Abstract: We define the Grothendieck ring of varieties and the power 
structure on it. We then present some formulae expressing the naive 
motive of the Quot scheme of points on a 3-fold, as opposed to its 
virtual motive, also known as motivic Donaldson-Thomas invariant. In the 
virtual setup, we will focus mainly on the case of affine 3-space, on 
which the global case is suitably modelled. The final formula for the 
generating function of the virtual motives fully solves the higher rank 
DT theory of a pair (X,F) = (3-fold,vector bundle).

The seminar will take place online. The Zoom link is 
https://us02web.zoom.us/j/87239350702.

You are welcome to extend the invitation to anyone interested.

Best,
Francesco