Produkt von Formen.
Projektive Ebenen mit Homomorphismus und erweiterte lokale Ternärringe
Propriétés de dualité dans les représentations coinduites de superalgèbres de Lie
Nous généralisons un résultat de dualité dans les représentations coinduites établi par M. Duflo (dans [Du]) dans le cas des algèbres de Lie de dimension finie. La démonstration que nous en proposons utilise la superalgèbre des opérateurs différentiels sur le module coinduit ainsi que la correspondance, mise en évidence par J. Bernstein, entre -modules à droite et -modules à gauche. Elle n’est valable qu’en caractéristique zéro. Nous donnons aussi une interprétation de ce théorème en termes de...
Pseudo-composition algebras.
Quantum sections and Gauge algebras.
Using quantum sections of filtered rings and the associated Rees rings one can lift the scheme structure on Proj of the associated graded ring to the Proj of the Rees ring. The algebras of interest here are positively filtered rings having a non-commutative regular quadratic algebra for the associated graded ring; these are the so-called gauge algebras obtaining their name from special examples appearing in E. Witten's gauge theories. The paper surveys basic definitions and properties but concentrates...
Quasi-trace functions on Lie algebras and their applications to 3-Lie algebras
We introduce the notion of quasi-trace functions on Lie algebras. As applications we study realizations of 3-dimensional and 4-dimensional 3-Lie algebras. Some comparison results on cohomologies of 3-Lie algebras and Leibniz algebras arising from quasi-trace functions are obtained.
Quasitriangular Hom-Hopf algebras
A twisted generalization of quasitriangular Hopf algebras called quasitriangular Hom-Hopf algebras is introduced. We characterize these algebras in terms of certain morphisms. We also give their equivalent description via a braided monoidal category . Finally, we study the twisting structure of quasitriangular Hom-Hopf algebras by conjugation with Hom-2-cocycles.
Quasitrivial groupoids and balanced identities
Quotient rings from right ideals
Radicals of semi-group rings
Radicals which define factorization systems
A method due to Fay and Walls for associating a factorization system with a radical is examined for associative rings. It is shown that a factorization system results if and only if the radical is strict and supernilpotent. For groups and non-associative rings, no radical defines a factorization system.
Rational string topology
We use the computational power of rational homotopy theory to provide an explicit cochain model for the loop product and the string bracket of a simply connected closed manifold . We prove that the loop homology of is isomorphic to the Hochschild cohomology of the cochain algebra with coefficients in . Some explicit computations of the loop product and the string bracket are given.
Reductive homogeneous spaces and nonassociative algebras
The purpose of these survey notes is to give a presentation of a classical theorem of Nomizu [Nom54] that relates the invariant affine connections on reductive homogeneous spaces and nonassociative algebras.
Relative congruence distributivity within quasivarieties of nearly associative Φ-algebras
Remarks to the dimension of an atypical irreducible representation of the special Lie superalgebra .
Representation theory of local division algebras.
Représentations matricielles des séries d'arbre reconnaissables
Restricted and quasi-toral restricted Lie-Rinehart algebras
In this paper, we introduce the definition of restrictable Lie-Rinehart algebras, the concept of restrictability is by far more tractable than that of a restricted Lie-Rinehart algebra. Moreover, we obtain some properties of p-mappings and restrictable Lie-Rinehart algebras. Finally, we give some sufficient conditions for the commutativity of quasi-toral restricted Lie-Rinehart algebras and study how a quasi-toral restricted Lie-Rinehart algebra with zero center and of minimal dimension should be....
Reversibility in absolute-valued algebras
Right Alternative Rings with Minimal Condition.