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arXiv 1004.4929math.SGmath.GT
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一个加边Chekanov-Eliashberg代数

A bordered Chekanov-Eliashberg algebra

Steven Sivek

摘要:

给定一个Legendrian纽结$K$在$\mathbb{R}^{3}$中的前投影,该纽结沿垂直线分成若干段,我们给每一段分配一个微分分次代数,并证明了一个van Kampen定理,该定理描述了$K$的Chekanov-Eliashberg不变量是这些代数的推出.然后,我们使用这个定理来构造映射的勒让德结的不变量之间的某些纠缠替换,并描述线性接触的勒让德怀特黑德双打。其他后果包括迈耶-Vietoris序列的线性接触的同源性和范坎彭定理的特征代数的勒让德结。

英文摘要:

Given a front projection of a Legendrian knot $K$ in $\mathbb{R}^{3}$ which has been cut into several pieces along vertical lines, we assign a differential graded algebra to each piece and prove a van Kampen theorem describing the Chekanov-Eliashberg invariant of $K$ as a pushout of these algebras. We then use this theorem to construct maps between the invariants of Legendrian knots related by certain tangle replacements, and to describe the linearized contact homology of Legendrian Whitehead doubles. Other consequences include a Mayer-Vietoris sequence for linearized contact homology and a van Kampen theorem for the characteristic algebra of a Legendrian knot.

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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