Algebra and geometry seminar 19-03-2021

[Francesco Galuppi]

Dear colleagues,

this is to advertise the weekly seminar of the Algebra and geometry 
group of University of Trieste. On Friday, March 19th at 10:30, Sergej 
Monavari (University of Utrecht) will talk about "Higher rank 
K-theoretic Donaldson-Thomas invariants of points".

 From the moduli spaces of sheaves on a complex algebraic variety one 
can extract many interesting invariants of various nature, which are in 
general very difficult to compute and rarely described by explicit 
closed formulae. We start reviewing classical results on topological 
invariants of Hilbert schemes of points for curves and surfaces and then 
turn to the case of threefolds, where Donaldson-Thomas theory is 
defined. As an example, we present and prove a closed formula for higher 
rank K-theoretic DT invariants of points, which solves a conjecture 
proposed in String Theory. This is based on joint work with N. Fasola 
and A. Ricolfi.

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

You are welcome to extend the invitation to anyone interested.