Bruno Klingler: On the algebraicity of the Hodge locus
Time: Tue 2021-10-12 13.15 - 14.15
Participating: Bruno Klingler (Humboldt-Universität zu Berlin)
Abstract: Given a polarizable variation of Hodge structures on a smooth quasi projective variety S, Cattani–Deligne–Kaplan proved that its Hodge locus (the locus of closed points of S where exceptional Hodge tensors do appear) is a countable union of closed algebraic subvarieties of S. In this talk I will discuss when this Hodge locus is actually algebraic. Joint work with Baldi and Ullmo.