Mathematics – Representation Theory
Scientific paper
2009-05-22
Mathematics
Representation Theory
14 pages, minor changes.
Scientific paper
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 $e$.
Goodwin Simon M.
Roehrle Gerhard
Ubly Glenn
No associations
LandOfFree
On 1-dimensional representations of finite W-algebras associated to simple Lie algebras of exceptional type does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On 1-dimensional representations of finite W-algebras associated to simple Lie algebras of exceptional type, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On 1-dimensional representations of finite W-algebras associated to simple Lie algebras of exceptional type will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-325783