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# Paolo Stellari : Derived Torelli Theorem and Orientation

We will consider the problem of describing the group of autoequivalences of the derived categories of smooth K3 surfaces. After recalling the (Twisted) Derived Torelli Theorem, we will focus on its conjectural refinement, involving the preservation of the orientation of some 4-dimensional space in the total cohomology lattice. The conjecture will be proved in the generic (non-projective) case and we will discuss a few results which will possibly lead to the proof of the conjecture for smooth projective K3 surfaces. This is a joint work with D. Huybrechts and E. Macri'.

**Category**: Algebraic Geometry**Duration**: 01:34:47**Date**: September 19, 2007 at 4:25 PM**Views**: 165-
**Tags:**seminar, Algebraic Geometry Seminar

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