Transverse knots and Khovanov homology

Transverse knots and Khovanov homology
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横向结和霍瓦诺夫同调

DOI:
10.4310/mrl.2006.v13.n4.a7
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发表时间:
2004
影响因子:
1
通讯作者:
O. Plamenevskaya
O. Plamenevskaya
中科院分区:
数学3区
文献类型:
--
作者:
O. Plamenevskaya

文献摘要

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我们定义了一个不变量的横向链接在标准的接触3-球面作为一个杰出的元素的Khovanov同源的链接。这个不变量的量子分次是链接的自链接数。对于纽结,这给出了自链接数在拉斯穆森不变量s(K)方面的界。我们证明了我们的不变量消失的横向结稳定,它是非零的准正辫子。我们还讨论了Heegaard Floer不变量的连接。
We define an invariant of transverse links in the standard contact 3-sphere as a distinguished element of the Khovanov homology of the link. The quantum grading of this invariant is the self-linking number of the link. For knots, this gives a bound on the self-linking number in terms of Rasmussen's invariant s(K). We prove that our invariant vanishes for transverse knot stabilizations, and that it is non-zero for quasipositive braids. We also discuss a connection to Heegaard Floer invariants.