A nondisplaceable Lagrangian torus in T*S2 |
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| Authors: | Peter Albers Urs Frauenfelder |
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| Institution: | 1. Courant Institute, 251 Mercer Street, New York, NY 10012;2. Universit?t München, Mathematisches Institut, Theresienstr. 39, D‐80333 München, Germany |
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| Abstract: | We show that the Lagrangian torus in the cotangent bundles of the 2‐sphere obtained by applying the geodesic flow to the unit circle in a fiber is not displaceable by computing its Lagrangian Floer homology. The computation is based on a symmetry argument. © 2007 Wiley Periodicals, Inc. |
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