{"id":4329,"date":"2022-05-04T09:56:44","date_gmt":"2022-05-04T07:56:44","guid":{"rendered":"https:\/\/www.dm.unipi.it\/eventi\/an-integrable-billiard-close-to-an-ellipse-of-small-eccentricity-is-an-ellipse-jacopo-de-simoi-university-of-toronto\/"},"modified":"2022-05-04T09:56:44","modified_gmt":"2022-05-04T07:56:44","slug":"an-integrable-billiard-close-to-an-ellipse-of-small-eccentricity-is-an-ellipse-jacopo-de-simoi-university-of-toronto","status":"publish","type":"unipievents","link":"https:\/\/www.dm.unipi.it\/en\/eventi\/an-integrable-billiard-close-to-an-ellipse-of-small-eccentricity-is-an-ellipse-jacopo-de-simoi-university-of-toronto\/","title":{"rendered":"An integrable billiard close to an ellipse of small eccentricity is an ellipse &#8211; Jacopo De Simoi  (University of Toronto)"},"content":{"rendered":"<h4>Venue<\/h4>\n<p>Sala Conferenze (Puteano, Centro De Giorgi).<\/p>\n<h4 class='mt-4'>Abstract<\/h4>\n<p>In 1927 G. Birkhoff conjectured that if a billiard in a strictly convex smoothdomain is integrable, the domain has to be an ellipse (or a circle). Theconjecture is still wide open, and presents remarkable relations with openquestions in inverse spectral theory and spectral rigidity. In the talk we show that a version of Birkhoff&#8217;s conjecture is true for smallperturbations of ellipses of small eccentricity. This is joint work with A. Avila and V. Kaloshin <\/p>\n","protected":false},"excerpt":{"rendered":"<p>In 1927 G. Birkhoff conjectured that if a billiard in a strictly convex smoothdomain is integrable, the domain has to be an ellipse (or a circle). Theconjecture is still wide open, and presents remarkable relations with openquestions in inverse&hellip;<\/p>\n<p><a class=\"btn btn-dark btn-sm unipi-read-more-link\" href=\"https:\/\/www.dm.unipi.it\/en\/eventi\/an-integrable-billiard-close-to-an-ellipse-of-small-eccentricity-is-an-ellipse-jacopo-de-simoi-university-of-toronto\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"template":"","tags":[],"unipievents_taxonomy":[],"class_list":["post-4329","unipievents","type-unipievents","status-publish","hentry"],"acf":[],"unipievents_startdate":1437388200,"unipievents_enddate":1437391800,"unipievents_place":"Sala Conferenze (Puteano, Centro De Giorgi).","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\/4329","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\/4329\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/media?parent=4329"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/tags?post=4329"},{"taxonomy":"unipievents_taxonomy","embeddable":true,"href":"https:\/\/www.dm.unipi.it\/en\/wp-json\/wp\/v2\/unipievents_taxonomy?post=4329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}