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arXiv 2111.00550math.SGmath.GT
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闭流形上共形辛叶理的存在性

Existence of conformal symplectic foliations on closed manifolds

Fabio Gironella, Lauran Toussaint

摘要:

本文研究了维数至少为5的闭流形上辛和共形辛余维1叶理的存在性。我们的主要定理,根据最近的结果,由贝特尔森Meigniez,指出,在7维至少任何几乎切触结构是同伦的共形辛叶理。在5维中,我们在每个闭的,单连通的,几乎切触流形上构造显式共形辛叶理,以及在其中的一个大子集上构造诚实的辛叶理。最后,通过圆连通和,我们得到,在闭流形上,共形辛叶理的例子,允许线性变形的切触结构。

英文摘要:

We consider the existence of symplectic and conformal symplectic codimension-one foliations on closed manifolds of dimension at least 5. Our main theorem, based on a recent result by Bertelson-Meigniez, states that in dimension at least 7 any almost contact structure is homotopic to a conformal symplectic foliation. In dimension 5 we construct explicit conformal symplectic foliations on every closed, simply-connected, almost contact manifold, as well as honest symplectic foliations on a large subset of them. Lastly, via round-connected sums, we obtain, on closed manifolds, examples of conformal symplectic foliations which admit a linear deformation to contact structures.

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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