{"id":4382,"date":"2022-05-04T09:57:58","date_gmt":"2022-05-04T07:57:58","guid":{"rendered":"https:\/\/www.dm.unipi.it\/eventi\/dijkgraaf-witten-invariants-over-z_2-for-orientable-3-manifolds-sergei-matveev-chelyabinsk-state-university\/"},"modified":"2022-05-04T09:57:58","modified_gmt":"2022-05-04T07:57:58","slug":"dijkgraaf-witten-invariants-over-z_2-for-orientable-3-manifolds-sergei-matveev-chelyabinsk-state-university","status":"publish","type":"unipievents","link":"https:\/\/www.dm.unipi.it\/en\/eventi\/dijkgraaf-witten-invariants-over-z_2-for-orientable-3-manifolds-sergei-matveev-chelyabinsk-state-university\/","title":{"rendered":"Dijkgraaf-Witten invariants  over Z_2 for orientable 3-manifolds &#8211; Sergei Matveev (Chelyabinsk State University)"},"content":{"rendered":"<h4>Venue<\/h4>\n<p>Sala Seminari (Dip. Matematica).<\/p>\n<h4 class='mt-4'>Abstract<\/h4>\n<p>We will describe a general method for calculating DW-invariants of orientable 3-manifolds. The method is based on a relation between DW-invariants and Arf-invariants of special quadratic functions over Z_2 on the first cohomology group of the given manifold. As an example, we calculate DW-invariants of all orientable Seifert manifolds fibered over the 2-dimensional sphere. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>We will describe a general method for calculating DW-invariants of orientable 3-manifolds. The method is based on a relation between DW-invariants and Arf-invariants of special quadratic functions over Z_2 on the first cohomology group of the given&hellip;<\/p>\n<p><a class=\"btn btn-dark btn-sm unipi-read-more-link\" href=\"https:\/\/www.dm.unipi.it\/en\/eventi\/dijkgraaf-witten-invariants-over-z_2-for-orientable-3-manifolds-sergei-matveev-chelyabinsk-state-university\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"template":"","tags":[],"unipievents_taxonomy":[],"class_list":["post-4382","unipievents","type-unipievents","status-publish","hentry"],"acf":[],"unipievents_startdate":1463047200,"unipievents_enddate":1463050800,"unipievents_place":"Sala Seminari (Dip. Matematica).","unipievents_externalid":0,"jetpack_sharing_enabled":true,"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/unipievents\/4382","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\/4382\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/media?parent=4382"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/tags?post=4382"},{"taxonomy":"unipievents_taxonomy","embeddable":true,"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/unipievents_taxonomy?post=4382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}