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arXiv 1409.3152math.SG
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通过生成族的拉格朗日余论:构造与地理

Lagrangian Cobordisms via Generating Families: Constructions and Geography

Frederic Bourgeois, Joshua M. Sabloff, Lisa Traynor

摘要:

勒让德子流形之间的嵌入拉格朗日配边是由采用生成族技术的合痕、旋转和手柄连接构造产生的。此外,任何具有生成族的Legendrian都具有具有相容生成族的浸入拉格朗日填充。这些构造在几个方向上都有应用,特别是在一个非经典的地理问题上:任何满足对偶条件的分次群都可以被实现为R^{2n+1}中连通勒让德子流形的生成族同调,或者在n至少为2的紧致n-流形的1-jet空间中。

英文摘要:

Embedded Lagrangian cobordisms between Legendrian submanifolds are produced from isotopy, spinning, and handle attachment constructions that employ the technique of generating families. Moreover, any Legendrian with a generating family has an immersed Lagrangian filling with a compatible generating family. These constructions are applied in several directions, in particular to a non-classical geography question: any graded group satisfying a duality condition can be realized as the generating family homology of a connected Legendrian submanifold in R^{2n+1} or in the 1-jet space of any compact n-manifold with n at least 2.

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