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arXiv 1206.3532math.GTmath.AT
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Rasmussen s-不变量的一个加细

A refinement of Rasmussen's s-invariant

Robert Lipshitz, Sucharit Sarkar

摘要:

在以前的论文中,我们构建了Khovanov同调的谱级精化。这种改进诱导稳定的上同调运算Khovanov同调。本文证明了这些上同调运算与Khovanov同调上的协边映射可换。因此,我们得到了细化的Rasmussen的切片属界的每个稳定的上同调运算。我们证明,在Steenrod平方SQ ^2的情况下,我们的加细严格强于s。

英文摘要:

In a previous paper we constructed a spectrum-level refinement of Khovanov homology. This refinement induces stable cohomology operations on Khovanov homology. In this paper we show that these cohomology operations commute with cobordism maps on Khovanov homology. As a consequence we obtain a refinement of Rasmussen's slice genus bound s for each stable cohomology operation. We show that in the case of the Steenrod square Sq^2 our refinement is strictly stronger than s.

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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