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arXiv 1202.5928math.GT
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真正打开的书和真正的切触结构

Real open books and real contact structures

Ferit Ozturk, Nermin Salepci

摘要:

一个实三维流形是一个光滑三维流形加上一个保持方向的光滑对合,称为实结构。在这篇文章中,我们研究了与实结构相容的光滑实三维流形上的开书分解。我们称之为真正的开卷分解。我们证明了每个实开书都带有一个实接触结构,并且由同一个实开书分解支撑的两个实切触结构是等变的同位素。我们还证明了三维实闭流形上的每个实切触结构都由实开书支撑。最后,我们猜想,在实切触流形上支持同一实切触结构的两个实开书通过正实稳定化和等变合痕联系起来,并且Giroux对应也适用于实流形,即在实3-流形上直到等变切触合痕的实切触结构和直到正实稳定化的实开书之间存在一一对应.同时,我们研究了透镜空间中的实开书和实Heegaard分解的一些例子.

英文摘要:

A real 3-manifold is a smooth 3-manifold together with an orientation preserving smooth involution, called a real structure. In this article we study open book decompositions on smooth real 3-manifolds that are compatible with the real structure. We call them real open book decompositions. We show that each real open book carries a real contact structure and two real contact structures supported by the same real open book decomposition are equivariantly isotopic. We also show that every real contact structure on a closed 3-dimensional real manifold is supported by a real open book. Finally, we conjecture that two real open books on a real contact manifold supporting the same real contact structure are related by positive real stabilizations and equivariant isotopy and that the Giroux correspondence applies to real manifolds as well namely that there is a one to one correspondence between the real contact structures on a real 3-manifold up to equivariant contact isotopy and the real open books up to positive real stabilization. Meanwhile, we study some examples of real open books and real Heegaard decompositions in lens spaces.

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