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On the denominators of Young's seminormal basis
Journal of Combinatorial Theory Series A ( IF 1.1 ) Pub Date : 2022-06-09 , DOI: 10.1016/j.jcta.2022.105645
Steen Ryom-Hansen

We study the seminormal basis {ft} for the Specht modules of the Iwahori-Hecke algebra Hn(q) of type An1. We focus on the base change coefficients between the seminormal basis {ft} and Murphys' standard basis {xt} with emphasis on the denominators of these coefficients. In certain important cases we obtain simple formulas for these coefficients involving hook lengths. Even for general standard tableaux we obtain new formulas. On the way we prove a new result about submodules of the restricted Specht module at root of unity.



中文翻译:

关于杨氏半正规基的分母

我们研究半正态基{F}用于 Iwahori-Hecke 代数的 Specht 模块Hn(q)类型一个n-1. 我们关注半正态基之间的基变化系数{F}和墨菲标准基{X}强调这些系数的分母。在某些重要的情况下,我们获得了这些涉及钩子长度的系数的简单公式。即使对于一般标准画面,我们也获得了新的公式。在此过程中,我们证明了一个关于统一根的受限 Specht 模块的子模块的新结果。

更新日期:2022-06-10
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