{"id":18909,"date":"2023-03-02T10:14:45","date_gmt":"2023-03-02T07:14:45","guid":{"rendered":"https:\/\/w3.bilkent.edu.tr\/en\/?p=18909"},"modified":"2023-03-14T08:15:52","modified_gmt":"2023-03-14T05:15:52","slug":"math-seminar-rational-points-on-the-noether-lefschetz-locus-of-k3-moduli-spaces-domenico-valloni-340pm-march-10-en","status":"publish","type":"post","link":"https:\/\/w3.bilkent.edu.tr\/en\/math-seminar-rational-points-on-the-noether-lefschetz-locus-of-k3-moduli-spaces-domenico-valloni-340pm-march-10-en\/","title":{"rendered":"MATH Seminar: \u201cRational points on the Noether-Lefschetz locus of K3 moduli spaces\u201d, Domenico Valloni, 3:40PM March 10 (EN)"},"content":{"rendered":"<p>You are cordially invited to the ODTU-Bilkent Algebraic Geometry Seminar<\/p>\n<p>Speaker: Domenico Valloni (Hannover)<br \/>\n\u201cRational points on the Noether-Lefschetz locus of K3 moduli spaces\u201d<\/p>\n<p>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 \u2014&gt;NS(X) and, when L = 2d &gt;, 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<p>Date: Friday, 10 March 2023<br \/>\nTime: 15:40 (GMT+3)<br \/>\nPlace: Zoom<\/p>\n<p>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":"<p>You are cordially invited to the ODTU-Bilkent Algebraic Geometry Seminar Speaker: Domenico Valloni (Hannover) \u201cRational points on the Noether-Lefschetz locus of K3 moduli spaces\u201d 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<div class=\"clear\"><\/div>\n<p><a class=\"more_link clearfix\" href=\"https:\/\/w3.bilkent.edu.tr\/en\/math-seminar-rational-points-on-the-noether-lefschetz-locus-of-k3-moduli-spaces-domenico-valloni-340pm-march-10-en\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-18909","post","type-post","status-publish","format-standard","hentry","category-oldposts"],"_links":{"self":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/posts\/18909","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/comments?post=18909"}],"version-history":[{"count":1,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/posts\/18909\/revisions"}],"predecessor-version":[{"id":18910,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/posts\/18909\/revisions\/18910"}],"wp:attachment":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/media?parent=18909"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/categories?post=18909"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/tags?post=18909"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}