According to Lerman, compact connected toric contact 3-manifolds with a non-free toric action whose moment cone spans an angle greater than are overtwisted, thus non-fillable. In contrast, we show that all compact connected toric contact manifolds in dimension greater than three are weakly symplectically fillable and many of them are strongly symplectically fillable. The proof is based on Lerman's classification of toric contact manifolds and on our observation that the only contact manifolds in higher dimensions that admit free toric action are the cosphere bundle of and , with the unique contact structure.
机构:
Inst Super Tecn, Dept Matemat, Ctr Anal Matemat Geometria & Sistemas Dinam, P-1049001 Lisbon, PortugalInst Super Tecn, Dept Matemat, Ctr Anal Matemat Geometria & Sistemas Dinam, P-1049001 Lisbon, Portugal
Abreu, Miguel
Macarini, Leonardo
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机构:
Univ Fed Rio de Janeiro, Inst Matemat, BR-21941909 Rio De Janeiro, BrazilInst Super Tecn, Dept Matemat, Ctr Anal Matemat Geometria & Sistemas Dinam, P-1049001 Lisbon, Portugal