Injective morphisms between Artin-Tits groups. (Morphismes injectifs entre groupes d'Artin-Tits.)
Intertwining Operators and Polynomials Associated with the Symmetric Group.
Invariants of finite groups generated by generalized transvections in the modular case
We investigate the invariant rings of two classes of finite groups which are generated by a number of generalized transvections with an invariant subspace over a finite field in the modular case. We name these groups generalized transvection groups. One class is concerned with a given invariant subspace which involves roots of unity. Constructing quotient groups and tensors, we deduce the invariant rings and study their Cohen-Macaulay and Gorenstein properties. The other is concerned with...
Isometry classes of generalized associahedra.