BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20260602T200419EDT-4707Oi8NWc@132.216.98.100 DTSTAMP:20260603T000419Z DESCRIPTION:Title: Nodal sets of eigenfunctions of sub-Laplacians\n\nAbstra ct: Nodal sets of eigenfunctions of elliptic operators on compact manifold s have been studied extensively over the past decades. In a recent work\, we initiated the study of nodal sets of eigenfunctions of hypoelliptic ope rators on compact manifolds\, focusing on sub-Laplacians (e.g. on compact quotients of the Heisenberg group). Fixing an arbitrary sub-Laplacian\, so me of our results hold for any eigenfunction\, and others hold when averag ing over random linear combinations of eigenfunctions. Our results show th at nodal sets behave in an anisotropic way which can be analyzed with stan dard tools from sub-Riemannian geometry such as sub-Riemannian dilations\, nilpotent approximation and desingularization at singular points. This is a joint work with S. Eswarathasan.\n\nRoom: 4336-4384 Pavillon André-Aise nstadt\, Université de Montréal\n\nor\n\nZoom link: https://umontreal.zoom .us/j/83118539851?pwd=bk5IOXBLNDRNSnR4dEcrSUFJVWhPZz09\n\nMeeting ID: 831 1853 9851\n\nPasscode: 215516\n DTSTART:20230113T193000Z DTEND:20230113T203000Z SUMMARY:Cyril Letrouit (MIT) URL:/mathstat/channels/event/cyril-letrouit-mit-344796 END:VEVENT END:VCALENDAR