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arXiv 0903.3376math.SGmath.DS
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构造微分型可积系统

Constructing integrable systems of semitoric type

Alvaro Pelayo, San Vu Ngoc

摘要:

设M是连通的辛4-流形。M上的Hamilton可积系统实质上由流形M上的一对独立的实值光滑函数J和H组成,J对J产生一个Hamilton圈作用,H在该作用下不变.本文给出了从五个成分的集合出发,构造一个带有可积可积系统的辛4-流形的一般方法。然后我们证明了辛4-流形上的每一个可积可积系统都是这样得到的。结合作者最近证明的唯一性定理(Invent. Math.2009),这给出了4-流形上的随机可积系统的分类,根据五个不变量。一些不变量是几何的,另一些是分析的,另一些是组合/群论的。

英文摘要:

Let M be a connected, symplectic 4-manifold. A semitoric integrable system on M essentially consists of a pair of independent, real-valued, smooth functions J and H on the manifold M, for which J generates a Hamiltonian circle action under which H is invariant. In this paper we give a general method to construct, starting from a collection of five ingredients, a symplectic 4-manifold equipped a semitoric integrable system. Then we show that every semitoric integrable system on a symplectic 4-manifold is obtained in this fashion. In conjunction with the uniqueness theorem proved recently by the authors (Invent. Math. 2009), this gives a classification of semitoric integrable systems on 4-manifolds, in terms of five invariants. Some of the invariants are geometric, others are analytic and others are combinatorial/group-theoretic.

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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