{"id":10037,"date":"2023-09-21T10:47:24","date_gmt":"2023-09-21T08:47:24","guid":{"rendered":"https:\/\/www.dm.unipi.it\/eventi\/the-j-invariant-of-linear-algebraic-groups-of-outer-type-nikita-geldhauser-lmu-munich\/"},"modified":"2023-09-21T10:47:24","modified_gmt":"2023-09-21T08:47:24","slug":"the-j-invariant-of-linear-algebraic-groups-of-outer-type-nikita-geldhauser-lmu-munich","status":"publish","type":"unipievents","link":"https:\/\/www.dm.unipi.it\/en\/eventi\/the-j-invariant-of-linear-algebraic-groups-of-outer-type-nikita-geldhauser-lmu-munich\/","title":{"rendered":"The J-invariant of linear algebraic groups of outer type &#8211; Nikita Geldhauser (LMU Munich)"},"content":{"rendered":"<h4>Venue<\/h4>\n<p>Department of Mathematics, Aula Seminari.<\/p>\n<h4 class='mt-4'>Abstract<\/h4>\n<p><span style=\"font-size:10pt\">The J-invariant is a discrete invariant of semisimple<\/span><br \/><span style=\"font-size:10pt\">algebraic groups which describes the motivic behavior of the variety of<\/span><br \/><span style=\"font-size:10pt\">Borel subgroups. This invariant was an important tool to solve several<\/span><br \/><span style=\"font-size:10pt\">long-standing problems. For example, it plays an important role in the<\/span><br \/><span style=\"font-size:10pt\">progress on the Kaplansky problem about possible values of the<\/span><br \/><span style=\"font-size:10pt\">u-invariant of fields by Vishik. In the talk I would like to present a<\/span><br \/><span style=\"font-size:10pt\">generalization of the J-invariant to groups of outer type and describe<\/span><br \/><span style=\"font-size:10pt\">some new combinatorial patterns for Chow groups and motives.<\/span><\/p>\n<p class='mt-4'>Further information is available on the <a href=\"https:\/\/events.dm.unipi.it\/event\/206\/\">event page<\/a> on the Indico platform.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The J-invariant is a discrete invariant of semisimplealgebraic groups which describes the motivic behavior of the variety ofBorel subgroups. This invariant was an important tool to solve severallong-standing problems. For example, it plays an&hellip;<\/p>\n<p><a class=\"btn btn-dark btn-sm unipi-read-more-link\" href=\"https:\/\/www.dm.unipi.it\/en\/eventi\/the-j-invariant-of-linear-algebraic-groups-of-outer-type-nikita-geldhauser-lmu-munich\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"template":"","tags":[],"unipievents_taxonomy":[],"class_list":["post-10037","unipievents","type-unipievents","status-publish","hentry"],"acf":[],"unipievents_startdate":1695826800,"unipievents_enddate":1695830400,"unipievents_place":"Department of Mathematics, Aula Seminari.","unipievents_externalid":206,"jetpack_sharing_enabled":true,"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/unipievents\/10037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/unipievents"}],"about":[{"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/types\/unipievents"}],"author":[{"embeddable":true,"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/users\/6"}],"version-history":[{"count":0,"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/unipievents\/10037\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/media?parent=10037"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/tags?post=10037"},{"taxonomy":"unipievents_taxonomy","embeddable":true,"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/unipievents_taxonomy?post=10037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}