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arXiv 2106.06253math.GTmath.SG
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具有柔性页面的接触式打开书籍

Contact open books with flexible pages

Jonathan Bowden, Diarmuid Crowley

摘要:

本文给出了维数为$2q{+}1 \geq 7$的流形$M$的一个初等拓扑阻塞:若$q$的整同调群的挠子群非零,则不存在具有柔性Weinstein页的切触开书和$c_1(π_2(M)) = 0$.我们实现这一点,证明了一个灵活的Weinstein流形的symplectomorphism行为平凡上同调。我们还使用相关的想法产生的非平凡的灵活的切触结构的循环的例子。

英文摘要:

We give an elementary topological obstruction for a manifold $M$ of dimension $2q{+}1 \geq 7$ to admit a contact open book with flexible Weinstein pages and $c_1(π_2(M)) = 0$: if the torsion subgroup of the $q$-th integral homology group is non-zero, then no such contact open book exists. We achieve this by proving that a symplectomorphism of a flexible Weinstein manifold acts trivially on cohomology. We also produce examples of non-trivial loops of flexible contact structures using related ideas.

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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