arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.6785math.COmath.AGmath.RT

Ordered Bell numbers, Hermite polynomials, Skew Young Tableaux, and Borel orbits

Mahir Bilen Can, Michael Joyce

英文摘要:

We give three interpretations of the number $b$ of orbits of the Borel subgroup of upper triangular matrices on the variety $\ms{X}$ of complete quadrics. First, we show that $b$ is equal to the number of standard Young tableaux on skew-diagrams. Then, we relate $b$ to certain values of a modified Hermite polynomial. Third, we relate $b$ to a certain cell decomposition on $\ms{X}$ previously studied by De Concini, Springer, and Strickland. Using these, we give asymptotic estimates for $b$ as the dimension of the quadrics increases.

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。

↑