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arXiv 2007.11036math.QAmath-phmath.MP
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作为普适不变量的Alexander多项式

The Alexander polynomial as a universal invariant

Rinat Kashaev

摘要:

令$\mathsf{B}_1$是多项式环$\mathbb{C}[a^{\pm1},b]$,其结构是复Hopf代数,该复Hopf代数是由其解释为$\left( \begin{smallmatrix} a&b\\0&1 \end{smallmatrix}\right)$形式的复可逆上三角2乘2矩阵的仿射线性代数群上的正则函数的代数导出的。我们证明了与$\mathsf{B}_1$相关的长结$K$的普适不变量是正则规范化的Alexander多项式$Δ_K(a)$的倒数。假设$\mathsf{B}_1$允许作为(有色)Jones多项式基础的$q$ -变形$\mathsf{B}_q$,我们的结果为Bar-Nathan和Garoufaldom,Garoufaldom和Lê证明的Melvin-Morton-Rozansky猜想提供了另一种概念上的解释.

英文摘要:

Let $\mathsf{B}_1$ be the polynomial ring $\mathbb{C}[a^{\pm1},b]$ with the structure of a complex Hopf algebra induced from its interpretation as the algebra of regular functions on the affine linear algebraic group of complex invertible upper triangular 2-by-2 matrices of the form $\left( \begin{smallmatrix} a&b\\0&1 \end{smallmatrix}\right)$. We prove that the universal invariant of a long knot $K$ associated to $\mathsf{B}_1$ is the reciprocal of the canonically normalised Alexander polynomial $Δ_K(a)$. Given the fact that $\mathsf{B}_1$ admits a $q$-deformation $\mathsf{B}_q$ which underlies the (coloured) Jones polynomials, our result provides another conceptual interpretation for the Melvin--Morton--Rozansky conjecture proven by Bar-Nathan and Garoufalidis, and Garoufalidis and Lê.

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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