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arXiv 0905.3714math.RTmath.QA
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例外型单李代数的有限W-代数的一维表示

On 1-dimensional representations of finite W-algebras associated to simple Lie algebras of exceptional type

Simon M. Goodwin, Gerhard Roehrle, Glenn Ubly

摘要:

考虑例外型单复李代数$\g$中与幂零元$e \in \g$相关联的有限$W$ -代数$U(\g,e)$.使用通过基于PBW定理的算法获得的演示文稿,我们验证了一个猜想,即$U(\g,e)$总是有一个1维表示,当$\g$是类型$G_2$,$F_4$,$E_6$或$E_7$。由于一个定理的普雷梅特,这使得人们能够推导出存在的最小维表示减少包络代数的模块李代数的上述类型。此外,Losev的一个定理使我们能够推导出在$U(\g)$中存在一个完全素本原理想,它的伴随簇是对应于$e$的余伴随轨道.

英文摘要:

We consider the finite $W$-algebra $U(\g,e)$ associated to a nilpotent element $e \in \g$ in a simple complex Lie algebra $\g$ of exceptional type. Using presentations obtained through an algorithm based on the PBW-theorem, we verify a conjecture of Premet, that $U(\g,e)$ always has a 1-dimensional representation, when $\g$ is of type $G_2$, $F_4$, $E_6$ or $E_7$. Thanks to a theorem of Premet, this allows one to deduce the existence of minimal dimension representations of reduced enveloping algebras of modular Lie algebras of the above types. In addition, a theorem of Losev allows us to deduce that there exists a completely prime primitive ideal in $U(\g)$ whose associated variety is the coadjoint orbit corresponding to $e$.

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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