PBW filtration and bases for symplectic Lie algebras

PBW filtration and bases for symplectic Lie algebras
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DOI:
10.1093/imrn/rnr014
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发表时间:
2010-10
期刊:
arXiv: Representation Theory
影响因子:
--
通讯作者:
E. Feigin;G. Fourier;P. Littelmann
E. Feigin;G. Fourier;P. Littelmann
中科院分区:
其他
文献类型:
--
作者:
E. Feigin;G. Fourier;P. Littelmann

文献摘要

相似文献

我们研究了$\msp_{2n}$的最高权表示$V(\la)$上的PBW过滤。这个过滤由$U(\n^-)$上的标准度过滤引起。我们给出了分次$S(\n^-)$-模$gr V(\la)$的生成元和关系的刻画.我们还构造了$gr V(\la)$的基。作为应用,我们得到了V(\la)特征标的分次组合公式,并得到了V(\la)模的一类新的基.
We study the PBW filtration on the highest weight representations $V(\la)$ of $\msp_{2n}$. This filtration is induced by the standard degree filtration on $U(\n^-)$. We give a description of the associated graded $S(\n^-)$-module $gr V(\la)$ in terms of generators and relations. We also construct a basis of $gr V(\la)$. As an application we derive a graded combinatorial formula for the character of $V(\la)$ and obtain a new class of bases of the modules $V(\la)$.