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SUMMARY:Renato Vianna (Rio de Janeiro)
DTSTART:20200903T140000Z
DTEND:20200903T150000Z
DTSTAMP:20260423T005802Z
UID:notts_ag/26
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/notts_ag/26/
 ">Sharp ellipsoid embeddings and almost-toric mutations</a>\nby Renato Via
 nna (Rio de Janeiro) as part of Online Nottingham algebraic geometry semin
 ar\n\n\nAbstract\nWe will show how to construct volume filling ellipsoid e
 mbeddings in some $4$-dimensional toric domain using mutations of almost t
 oric compactifications of those. In particular we recover the results of M
 cDuff-Schlenk for the ball\, Fenkel-Müller for product of symplectic disk
 s and Cristofaro-Gardiner for $E(2\,3)$\, giving a more explicit geometric
  perspective for these results. To be able to represent certain divisors\,
  we develop the idea of symplectic tropical curves in almost toric fibrati
 ons\, inspired by Mikhalkin's work for tropical curves. This is joint work
  with Roger Casals.\n
LOCATION:https://researchseminars.org/talk/notts_ag/26/
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