You are cordially invited to the ODTU-Bilkent Algebraic Geometry Seminar<\/p>\n
Speaker: Domenico Valloni (Hannover)
\n“Rational points on the Noether-Lefschetz locus of K3 moduli spaces”<\/p>\n
Abstract: Let L be an even hyperbolic lattice and denote by F_L the moduli space of L-polarized K3 surfaces. This parametrizes K3 surfaces X together with a primitive embedding of lattices L —>NS(X) and, when L = 2d >, one recovers the classical moduli spaces of 2d-polarized K3 surfaces. In this talk, I will introduce a simple criterion to decide whether a given bar{Q}-point of F_L has generic N\u00e9ron-Severi lattice (that is, NS(X) cong L). The criterion is of arithmetic nature and only uses properties of covering maps between Shimura varieties.<\/p>\n
Date: Friday, 10 March 2023
\nTime: 15:40 (GMT+3)
\nPlace: Zoom<\/p>\n
This is an online seminar. To request the event link, please send a message to sertoz@bilkent.edu.tr<\/p>\n","protected":false},"excerpt":{"rendered":"
You are cordially invited to the ODTU-Bilkent Algebraic Geometry Seminar Speaker: Domenico Valloni (Hannover) “Rational points on the Noether-Lefschetz locus of K3 moduli spaces” Abstract: Let L be an even hyperbolic lattice and denote by F_L the moduli space of L-polarized K3 surfaces. This parametrizes K3 surfaces X together with [\u2026] <\/p>\n