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DTSTAMP:20250802T162452Z
DESCRIPTION:Discrete geometry and isotropic surfaces.\n\nWe consider smooth
  isotropic immersions from the 2-dimensional torus into R2n\, for g>=2. Wh
 en n = 2 the image of such map is an immersed Lagrangian torus of R4. We p
 rove that such isotropic immersions can be approximated by arbitrarily C0-
 close piecewise linear isotropic maps. If n >= 3 the piecewise linear isot
 ropic maps can be chosen so that they are piecewise linear isotropic immer
 sions as well. The proofs are obtained using analogies with an infinite di
 mensional moment map geometry due to Donaldson. As a byproduct of these co
 nsiderations\, we introduce a numerical flow in finite dimension\, whose l
 imit provide\, from an experimental perspective\, many examples of piecewi
 se linear Lagrangian tori in R4.\n
DTSTART:20180202T160000Z
DTEND:20180202T170000Z
LOCATION:Room PK-5115 \, CA\, Pavillon President-Kennedy
SUMMARY:Yann Rollin\, Université de Nantes
URL:/mathstat/channels/event/yann-rollin-universite-de
 -nantes-284251
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