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arXiv 1708.03356math.SG
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Legendrians之间Lagrangian协律的相对Gromov宽度

The Relative Gromov Width of Lagrangian Cobordisms between Legendrians

Joshua M. Sabloff, Lisa Traynor

摘要:

我们得到了Legendrian子流形之间Lagrange协边的相对Gromov宽度的上界和下界。上界的存在产生的$J$-全纯磁盘上的拉格朗日配边,通过任何给定的辛嵌入球的中心的边界。这些磁盘的面积-因此,这些球的大小-是由一个实值的基本容量,一个数量来自过滤线性化勒让德接触同调的代数结构的勒让德顶部的协边。下界来自于在勒让德末端使用里布弦邻域的显式构造。我们还研究了相对格罗莫夫宽度和另一个定量测量,拉格朗日配边的长度之间的关系。

英文摘要:

We obtain upper and lower bounds for the relative Gromov width of Lagrangian cobordisms between Legendrian submanifolds. Upper bounds arise from the existence of $J$-holomorphic disks with boundary on the Lagrangian cobordism that pass through the center of any given symplectically embedded ball. The areas of these disks --- and hence the sizes of these balls --- are controlled by a real-valued fundamental capacity, a quantity derived from the algebraic structure of filtered linearized Legendrian Contact Homology of the Legendrian at the top of the cobordism. Lower bounds come from explicit constructions that use neighborhoods of Reeb chords in the Legendrian ends. We also study relationships between the relative Gromov width and another quantitative measurement, the length of a Lagrangian cobordism.

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