Sharply Transitive Linear Groups and Nearfields over p-adic Fields.
The paper studies nilpotent -Lie superalgebras over a field of characteristic zero. More specifically speaking, we prove Engel’s theorem for -Lie superalgebras which is a generalization of those for -Lie algebras and Lie superalgebras. In addition, as an application of Engel’s theorem, we give some properties of nilpotent -Lie superalgebras and obtain several sufficient conditions for an -Lie superalgebra to be nilpotent by using the notions of the maximal subalgebra, the weak ideal and the...
On étudie la structure des algèbres de Lie rigides sur un corps algébriquement clos de caractéristique 0. Elles sont algébriques. Quand le radical est non nilpotent leur dimension est la même que celle de l’algèbre des dérivations. Quand le radical est nilpotent elle appartient à l’un des cas suivants : parfaite, produit direct d’une algèbre parfaite par le corps de base ou encore toutes les dérivations semi-simples sont intérieures.
Let be a classical Lie algebra, i.e., either , , or and let be a nilpotent element of . We study various properties of the centralisers . The first four sections deal with rather elementary questions, like the centre of , commuting varieties associated with , or centralisers of commuting pairs. The second half of the paper addresses problems related to different Poisson structures on and symmetric invariants of .
Let be a unitary group defined over a non-Archimedean local field of odd residue characteristic and let be the centralizer of a semisimple rational Lie algebra element of We prove that the Bruhat-Tits building of can be affinely and -equivariantly embedded in the Bruhat-Tits building of so that the Moy-Prasad filtrations are preserved. The latter property forces uniqueness in the following way. Let and be maps from to which preserve the Moy–Prasad filtrations. We prove that...
We classify quadratic - and -modules by crude computation, generalising in the first case a Theorem proved independently by F.G. Timmesfeld and S. Smith. The paper is the first of a series dealing with linearisation results for abstract modules of algebraic groups and associated Lie rings.