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arXiv 0704.0105math.SG
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辛流形的刚性子集

Rigid subsets of symplectic manifolds

Michael Entov, Leonid Polterovich

摘要:

我们证明了闭辛流形中集合的交刚性性质存在一个层次:某些集合不能被来自更多集合的辛同胚置换。我们还发现新的例子刚性的交叉涉及,特别是特定纤维的时刻地图的哈密顿环面行动,单调拉格朗日子流形(以下的工作P.阿尔伯斯和P.Biran-O.科尼亚),以及某些,可能是奇异的,集定义的泊松交换子代数的光滑函数。此外,我们还得到了辛流形量子同调半单性的一些几何障碍。证明是基于Floer理论的机械部分辛准状态。

英文摘要:

We show that there is an hierarchy of intersection rigidity properties of sets in a closed symplectic manifold: some sets cannot be displaced by symplectomorphisms from more sets than the others. We also find new examples of rigidity of intersections involving, in particular, specific fibers of moment maps of Hamiltonian torus actions, monotone Lagrangian submanifolds (following the works of P.Albers and P.Biran-O.Cornea), as well as certain, possibly singular, sets defined in terms of Poisson-commutative subalgebras of smooth functions. In addition, we get some geometric obstructions to semi-simplicity of the quantum homology of symplectic manifolds. The proofs are based on the Floer-theoretical machinery of partial symplectic quasi-states.

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