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arXiv 0709.4077math.SGmath.DS
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局部弗洛尔同调与作用差

Local Floer Homology and the Action Gap

Viktor L. Ginzburg, Basak Z. Gurel

摘要:

本文研究了孤立不动点的局部弗洛尔同调的行为和作用间隙在迭代下的增长性。更具体地说,我们证明了一个孤立的不动点的Hamilton同构保持孤立的某一类迭代(所谓的容许迭代)和所有这样的迭代的局部弗洛尔同调群是同构到彼此的程度的转变。进一步研究了局部弗洛尔同调中的裤子对积,刻画了一类特殊的孤立不动点(辛退化极大值),这在Conley猜想的证明中起了重要作用.这些事实的证明依赖于一个观察,即对于一个一般的自同构,不一定是哈密顿的,一个孤立的不动点在所有允许的迭代下保持孤立。最后,我们应用这些结果表明,对于一个准等差数列的容许迭代的Hamilton同构孤立不动点的最小作用间隙是有界的,从上当周围的流形是封闭的和辛非球面。这个定理是Conley猜想的推广。

英文摘要:

In this paper, we study the behavior of the local Floer homology of an isolated fixed point and the growth of the action gap under iterations. To be more specific, we prove that an isolated fixed point of a Hamiltonian diffeomorphism remains isolated for a certain class of iterations (the so-called admissible iterations) and that the local Floer homology groups for all such iterations are isomorphic to each other up to a shift of degree. Furthermore, we study the pair-of-pants product in local Floer homology, and characterize a particular class of isolated fixed points (the symplectically degenerate maxima), which plays an important role in the proof of the Conley conjecture. The proofs of these facts rely on an observation that for a general diffeomorphism, not necessarily Hamiltonian, an isolated fixed point remains isolated under all admissible iterations. Finally, we apply these results to show that for a quasi-arithmetic sequence of admissible iterations of a Hamiltonian diffeomorphism with isolated fixed points the minimal action gap is bounded from above when the ambient manifold is closed and symplectically aspherical. This theorem is a generalization of the Conley conjecture.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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