2 papers
math.RT2006
Around Solomon's descent algebras
Cédric Bonnafé, Götz Pfeiffer
We study different problems related to the Solomon's descent algebra of a finite Coxeter group : positive elements, morphisms between descent algebras, Loewy length..…
math.GR2005
Twisted invariant theory for reflection groups
Cédric Bonnafé, Gus Lehrer, Jean Michel
Let be a reflection group acting on a vector space and let be an automorphism of normalising . We study how acts on invariants and covariants (for various re…