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Title: Remarks on Lagrangian intersections in toric manifolds
Authors: Miguel Abreu, Leonardo Macarini
Categories: math.SG Symplectic Geometry (math.GT Geometric Topology)
Comments: 26 pages, 13 figures. Version 2 with updated references. Version 3 inludes brief description of reduction in stages, expanded comments, added and updated references - to appear in Transactions of the AMS
Abstract: We consider two natural Lagrangian intersection problems in the context of
symplectic toric manifolds: displaceability of torus orbits and of a torus
orbit with the real part of the toric manifold. Our remarks address the fact
that one can use simple cartesian product and symplectic reduction
considerations to go from basic examples to much more sophisticated ones. We
show in particular how rigidity results for the above Lagrangian intersection
problems in weighted projective spaces can be combined with these
considerations to prove analogous results for all monotone toric symplectic
manifolds. We also discuss non-monotone and/or non-Fano examples, including
some with a continuum of non-displaceable torus orbits.
Owner: Miguel Abreu
Version 1: Tue, 3 May 2011 17:44:17 GMT
Version 2: Wed, 11 May 2011 18:07:31 GMT
Version 3: Tue, 17 Jan 2012 15:47:51 GMT