
doi: 10.1007/bfb0092232
Ce travail est inspire par plusieurs constructions recentes d'algebres a division qui ne se decomposent pas en produit tensoriel de sous-algebres. L'auteur de ce travail commence par definir une notion tres voisine de celle de "q-generating set" ou de 'p-central set", que l'on appelle "armature". Cette notion permet, dans le cas ou le corps de base contient suffisamment de racines de l'unite, de decrire les diverses decompositions d'une algebre. Il montre ensuite comment il est possible de determiner toutes les armatures de certaines algebres de series formelles. Les resultats ainsi obtenus sont ensuite appliques a certains cas particuliers.
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