Seminar on Donaldson-Thomas Theory - Mon Jan 22, 9.30, room 136 Sissa

[Andrea Maiorana]

Next Monday (Jan 22, at 9.30 in room 136) we will have the 10th and last 
seminar of the series on Donaldson-Thomas theory.

Title: Joyce's invariants and generalized DT invariants
Speaker: Andrea Maiorana
Abstract: We will discuss Joyce's invariants counting semistable objects 
in Abelian categories, and we will use motivic Hall algebras to derive 
"wall crossing" relations between these invariants which allow to 
compute them. Then we will introduce generalized Donaldson-Thomas 
invariants of Calabi-Yau threefolds in this framework.