Title: Cartan calculus in derived and noncommutative geometry. IV
Speaker: Nick Rozenblyum
Speaker Info: University of Chicago
Classical Cartan calculus concerns the action of vector fields on differential forms of a smooth manifold via Lie derivative and contraction. The key result is the Cartan magic formula which expresses the relation between the two actions.Date: Tuesday, July 19, 2022
In the algebro-geometric setting, I will describe an interpretation of the Cartan calculus as Griffiths transversality for the Gauss-Manin connection on the universal deformation space. This naturally generalizes to the setting of derived algebraic geometry and also to Tamarkin-Tsygan calculus in noncommutative geometry which involves the action of Hoschschild cohomology on Hochschild homology of a DG category.
I will explain a very general theorem relating derived loop spaces and connections, which is used to give a precise relationship between the two. Moreover, I will describe some applications of these results to shifted symplectic structures on moduli spaces in topology and representation theory.
This is joint work with Christopher Brav.