Categorical Torelli theorems: results and open problems

Abstract

We survey some recent results concerning the so called Categorical Torelli problem. This is to say how one can reconstruct a smooth projective variety up to isomorphism, by using the homological properties of special admissible subcategories of the bounded derived category of coherent sheaves of such a variety. The focus is on Enriques surfaces, prime Fano threefolds and cubic fourfolds.

arXiv comment59 pages. Final version to appear in a special issue of Rend. Circ. Mat. Palermo (2)