Extensiones centrales de las álgebras de Leibniz.
Extensions centrales d'algèbres de Lie
Soient un anneau commutatif et une -algèbre associative quelconque. Nous calculons le groupe d’homologie de la -algèbre de Lie des matrices de “trace nulle” sur . Le groupe ainsi déterminé est un groupe d’homologie d’un complexe inspiré d’A. Connes; il est isomorphe à lorsque est commutative. Nous obtenons également des résultats pour un groupe d’homologie relative associé à une surjection de -algèbres. Les démonstrations utilisent la classification des extensions centrales et des...
Extensions de théories de Lawvere. Thèse de doctorat de mathématiques
Extensions du groupe additif
Extensions in the theory of lax algebras.
Extensions of covariantly finite subcategories revisited
Extriangulated categories were introduced by Nakaoka and Palu by extracting the similarities between exact categories and triangulated categories. A notion of homotopy cartesian square in an extriangulated category is defined in this article. We prove that in an extriangulated category with enough projective objects, the extension subcategory of two covariantly finite subcategories is covariantly finite. As an application, we give a simultaneous generalization of a result of X. W. Chen (2009) and...
Extensions of factorization systems
Extensions of functors and their applications
Extensions of homogeneous coordinate rings to -algebras.
Extensions of Polylinear Mappings
Extensions of racks and quandles.
Extensions of rational modules.
Extensions of semimodules and the Takahashi functor .
Extensions of super Lie algebras.
...-Extensions of Topological Spaces II.
Extremal subobjects of complete posets
Factorization and non-algebraic categories
Factorization, fibration and torsion.
Factorization systems and adjunctions.
Factorization systems for symmetric cat-groups.