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arXiv 1012.4693math.SGmath.GT
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触点5-歧管示意图

Diagrams for contact 5-manifolds

Fan Ding, Hansjörg Geiges, Otto van Koert

摘要:

根据Giroux,接触流形可以被描述为打开的书,其页面是Stein流形。对于5维接触流形的网页是斯坦表面,允许描述通过柯比图。我们引入处理移动这样的图,不改变相应的接触流形。作为应用,我们得到了亚临界Stein可填充切触5-流形的分类结果,并利用这种填充对5-球面上的标准切触结构进行了分类。这一特点是讨论的背景下,安德鲁斯-柯蒂斯猜想有关介绍的平凡组。我们进一步说明了使用这样的图的覆盖定理的单连通自旋5-流形和一个新的存在性证明的切触结构的单连通5-流形。

英文摘要:

According to Giroux, contact manifolds can be described as open books whose pages are Stein manifolds. For 5-dimensional contact manifolds the pages are Stein surfaces, which permit a description via Kirby diagrams. We introduce handle moves on such diagrams that do not change the corresponding contact manifold. As an application, we derive classification results for subcritically Stein fillable contact 5-manifolds and characterise the standard contact structure on the 5-sphere in terms of such fillings. This characterisation is discussed in the context of the Andrews-Curtis conjecture concerning presentations of the trivial group. We further illustrate the use of such diagrams by a covering theorem for simply connected spin 5-manifolds and a new existence proof for contact structures on simply connected 5-manifolds.

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