arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.01055math.AGmath.RT
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范德蒙德行列式的Bernstein-Sato $b$ -函数

The Bernstein-Sato $b$-function of the Vandermonde determinant

Asilata Bapat, Robin Walters

摘要:

Bernstein-Sato多项式,或称$b$ -函数,是超曲面奇异性的重要不变量,通常难以计算。我们描述了几个不同的结果对计算的$b$ -功能的范德蒙德行列式$ξ$。我们使用Opdam的结果来产生$ξ$的$b$ -函数的下界。这个界证明了Budur,Mustaerovich和Teitler对于有限Coxeter超平面安排的一个猜想,在这种情况下证明了强单值猜想。在第二组结果中,我们证明了两个$\mathcal{D}$ -模的对偶性,并得出$ξ$的$b$ -函数的根关于$-1$对称的结论。然后利用跳变系数的一些结果证明了$ξ$的$b$ -函数的一个上界,最后推测了$ξ$的$b$ -函数的一个公式.

英文摘要:

The Bernstein-Sato polynomial, or the $b$-function, is an important invariant of singularities of hypersurfaces that is difficult to compute in general. We describe a few different results towards computing the $b$-function of the Vandermonde determinant $ξ$. We use a result of Opdam to produce a lower bound for the $b$-function of $ξ$. This bound proves a conjecture of Budur, Mustaţă, and Teitler for the case of finite Coxeter hyperplane arrangements, proving the Strong Monodromy Conjecture in this case. In our second set of results, we show the duality of two $\mathcal{D}$-modules, and conclude that the roots of the $b$-function of $ξ$ are symmetric about $-1$. We then use some results about jumping coefficients to prove an upper bound for the $b$-function of $ξ$, and finally we conjecture a formula for the $b$-function of $ξ$.

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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