Orateur
Calaque
Description
In this talk, I will present ongoing work with Alex Vitanov aimed at describing the Ext algebra of the sheaf associated with a closed embedding of smooth algebraic varieties.
I will first recall the case of the diagonal embedding, and then explain the two main tools we use:
- methods from formal geometry in a relative setting;
- a formality theorem in the presence of branes.
If time permits, I will conclude with a conjecture (which actually constitutes the main motivation for this work).