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On a subalgebra of the centre of a group ring II

✍ Scribed by Harald Meyer


Book ID
105755676
Publisher
Springer
Year
2007
Tongue
English
Weight
174 KB
Volume
90
Category
Article
ISSN
0003-889X

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πŸ“œ SIMILAR VOLUMES


Ad-nilpotent ideals of a Borel subalgebr
✍ Paola Cellini; Paolo Papi πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 English βš– 125 KB

We provide an explicit bijection between the ad-nilpotent ideals of a Borel subalgebra of a simple Lie algebra g and the orbits of Q/(h + 1) Q under the Weyl group ( Q being the coroot lattice and h the Coxeter number of g). From this result we deduce in a uniform way a counting formula for the ad-n