{"id":2027,"date":"2022-04-29T11:19:15","date_gmt":"2022-04-29T09:19:15","guid":{"rendered":"https:\/\/www.dm.unipi.it\/eventi\/vafa-witten-formulas-and-generalizations-lothar-gottsche-ictp-trieste\/"},"modified":"2022-04-29T11:19:15","modified_gmt":"2022-04-29T09:19:15","slug":"vafa-witten-formulas-and-generalizations-lothar-gottsche-ictp-trieste","status":"publish","type":"unipievents","link":"https:\/\/www.dm.unipi.it\/en\/eventi\/vafa-witten-formulas-and-generalizations-lothar-gottsche-ictp-trieste\/","title":{"rendered":"Vafa-Witten formulas and generalizations &#8211; Lothar G\u00f6ttsche (ICTP, Trieste)"},"content":{"rendered":"<h4>Venue<\/h4>\n<p>Dipartimento di Matematica, Aula Magna.<\/p>\n<h4 class='mt-4'>Abstract<\/h4>\n<p>25 years ago Vafa and Witten predicted generating functions for the Euler numbers of the moduli spaces of sheaves on algebraic surfaces. In this talk, I review joint work with Martijn Kool to interpret and check these predictions in terms of virtual Euler numbers, and to extend them to finer invariants like $chi_y$ genus. Time permitting I will also mention recent results on Chern numbers of tautological sheaves, and Verlinde type formulas.<\/p>\n<p class='mt-4'>Further information is available on the <a href=\"https:\/\/events.dm.unipi.it\/event\/39\/\">event page<\/a> on the Indico platform.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>25 years ago Vafa and Witten predicted generating functions for the Euler numbers of the moduli spaces of sheaves on algebraic surfaces. In this talk, I review joint work with Martijn Kool to interpret and check these predictions in terms of virtual&hellip;<\/p>\n<p><a class=\"btn btn-dark btn-sm unipi-read-more-link\" href=\"https:\/\/www.dm.unipi.it\/en\/eventi\/vafa-witten-formulas-and-generalizations-lothar-gottsche-ictp-trieste\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"template":"","tags":[],"unipievents_taxonomy":[],"class_list":["post-2027","unipievents","type-unipievents","status-publish","hentry"],"acf":[],"unipievents_startdate":1571848200,"unipievents_enddate":1571851800,"unipievents_place":"Dipartimento di Matematica, Aula Magna.","unipievents_externalid":39,"jetpack_sharing_enabled":true,"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/unipievents\/2027","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\/2027\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/media?parent=2027"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/tags?post=2027"},{"taxonomy":"unipievents_taxonomy","embeddable":true,"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/unipievents_taxonomy?post=2027"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}