BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Joé Brendel (ETH Zurich) DTSTART:20251118T150000Z DTEND:20251118T160000Z DTSTAMP:20260423T022720Z UID:Geolis/176 DESCRIPTION:Title: Knotted bi-disk embeddings\nby Joé Brendel (ETH Zurich) as part of G eometria em Lisboa (IST)\n\n\nAbstract\nA classical result by McDuff shows that the space of symplectic ball embeddings into many simple symplectic four-manifolds is connected. In this talk\, on the other hand\, we show th at the space of symplectic bi-disk embeddings often has infinitely many co nnected components\, even for simple target spaces like the complex projec tive plane\, or the symplectic ball. This extends earlier results by Gutt- Usher and Dimitroglou-Rizell. The proof uses almost toric fibrations and e xotic Lagrangian tori. Furthermore\, we will discuss natural quantitative questions arising in this context. This talk is based on joint work in pro gress with Grigory Mikhalkin and Felix Schlenk.\n LOCATION:https://researchseminars.org/talk/Geolis/176/ END:VEVENT END:VCALENDAR