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arXiv 2103.01507math.SGmath.AT
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Arnold猜想与Morava K-理论

Arnold Conjecture and Morava K-theory

Mohammed Abouzaid, Andrew J. Blumberg

摘要:

证明了特征$p$域上系数闭辛流形的上同调秩小于任何非退化Hamilton流的周期轨道数.在Floer之后,证明依赖于构造与每个这样的流相关联的同调群,并将其与周围辛流形的同调进行比较。这个证明并不是通过构造一个具有特征$p$系数的弗洛尔复形来进行的,而是使用弗洛尔轨迹的模空间的规范(稳定)复方向来构造一个具有摩拉瓦$K$ -理论中系数的弗洛尔同调,因此可以看作是科恩、琼斯和西格尔对弗洛尔同伦理论的实现。Morava K-理论的关键特征是允许进行构造,这一事实是有限群的分类空间的相应同调群和上同调群满足庞加莱对偶。

英文摘要:

We prove that the rank of the cohomology of a closed symplectic manifold with coefficients in a field of characteristic $p$ is smaller than the number of periodic orbits of any non-degenerate Hamiltonian flow. Following Floer, the proof relies on constructing a homology group associated to each such flow, and comparing it with the homology of the ambient symplectic manifold. The proof does not proceed by constructing a version of Floer's complex with characteristic $p$ coefficients, but uses instead the canonical (stable) complex orientations of moduli spaces of Floer trajectories to construct a version of Floer homology with coefficients in Morava's $K$-theories, and can thus be seen as an implementation of Cohen, Jones, and Segal's vision for a Floer homotopy theory. The key feature of Morava K-theory that allows the construction to be carried out is the fact that the corresponding homology and cohomology groups of classifying spaces of finite groups satisfy Poincaré duality.

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