La -matrice pour les algèbres quantiques de type affine non tordu
La renaissance des opérades
Le centre des algèbres de coordonnées des groupes quantiques aux racines -ièmes de l’unité
Le modèle des chemins
Left-covariant differential calculi on
We study dimensional left-covariant differential calculi on the quantum group . In this way we obtain four classes of differential calculi which are algebraically much simpler as the bicovariant calculi. The algebra generated by the left-invariant vector fields has only quadratic-linear relations and posesses a Poincaré-Birkhoff-Witt basis. We use the concept of universal (higher order) differential calculus associated with a given left-covariant first order differential calculus. It turns out...
Lie bialgebras real cohomology.
Littelmann's refined Demazure character formula revisited.
Lusztig conjectures, old and new, I.