Floer cohomology of the Chiang Lagrangian
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 Jonny Evans, UCL
 Wednesday 14 May 2014, 16:0017:00
 MR13.
If you have a question about this talk, please contact Ivan Smith.
Joint work with YankI Lekili. If we think of CP3 as the space of triples of points on the sphere then the Chiang Lagrangian is the subspace of triples with centre of mass at the origin. We will see that it has nonvanishing Floer cohomology if and only if the coefficient ring has characteristic 5. This calculation involves some general theory, true for all homogeneous Lagrangian submanifolds, and some very specific geometry in CP3 involving the twisted cubic.
This talk is part of the Differential Geometry and Topology Seminar series.
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