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arXiv 1702.03569math.GTmath.RT
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仿射辫群、JM元素和纽结同调

Affine Braid group, JM elements and knot homology

Alexei Oblomkov, Lev Rozansky

摘要:

本文在作者的前一篇文章中所考虑的空间$\overline{\mathcal{X}}_2=\mathfrak{b}_n\times GL_n\times\mathfrak{n}_n$上构造了仿射辫群$Br_n^{aff}$在等变矩阵分解的卷积代数中的同态。我们解释了空间$\overline{\mathcal{X}_2}$的稳定部分上的拉回与从仿射辫群$Br_n^{aff}$到有限辫群$Br_n$的自然同态交织在一起。这一观察使我们能够推导出$β\in Br_n$闭合的结同源性和$β\cdotδ$闭合的结同源性之间的关系,其中$δ$是$Br_n$中JM元件的产物

英文摘要:

In this paper we construct a homomorphism of the affine braid group $Br_n^{aff}$ in the convolution algebra of the equivariant matrix factorizations on the space $\overline{\mathcal{X}}_2=\mathfrak{b}_n\times GL_n\times\mathfrak{n}_n$ considered in the earlier paper of the authors. We explain that the pull-back on the stable part of the space $\overline{\mathcal{X}_2}$ intertwines with the natural homomorphism from the affine braid group $Br_n^{aff}$ to the finite braid group $Br_n$. This observation allows us derive a relation between the knot homology of the closure of $β\in Br_n$ and the knot homology of the closure of $β\cdotδ$ where $δ$ is a product of the JM elements in $Br_n$

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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