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
中科院分区:
文献类型:
--
作者:
O. Plamenevskaya
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.