Algebra and Operator Theory

On Leibniz Algebras.- A Moduli Problem Related to Complex Supermanifolds.- Comparaison de l’Homologie de Hochschild et de l’Homologie de Poisson pour une déformation des surfaces de Klein.- Quelques résultats en K-Théorie réelle.- Some Nilpotent Lie Algebras and its Applications.- Algèbres de Lie rigides.- Family of p-Filiform Lie Algebras.- The Functional Representation of Commutative Symmetric Operator Algebras in Pontryagin Space.- Continuous Decomposition of Real Von Neumann Algebras of Type III.- Espaces vectoriels différentiels.- Complétude de l’équation d’Euler.- On Invariants of Second Order Linear Partial Differential Equations in two Variables.- Lattice-Ordered Groupoids and their Prime Spectrums.- Sur un problème d’Elie Cartan.- Classification of Non-Commutative Arens Algebras Associated with Semi-Finite Traces.- Order Unit Space of Type In with Banach Ball Property.- On Markov Random Fields on UHF Algebras.- Injectivity, Amenability, Semi Discreteness and Hyperfiniteness in Real W*-Algebras.- Contractive Projections on Facially Symmetric Spaces.- The Property (t?) for Locally Compact Connected groups.- Grupos Cuánticos.- On the Group of Weak Automorphisms of a Family of Equivalence Relations.