Extenseurs
Extension categories and their homotopy
Extension functors on the category of -solvable abelian groups
Extension of mixed Hodge modules
Extension of the concept of n-function to categories
Extension of topological homology theories to partially orderd sets.
Extension theories for monoids.
Extensionable topological hulls and topological universe hulls inside the category of pseudotopological spaces
Extensional subobjects in categories of -fuzzy sets
Two categories and of fuzzy sets over an -algebra are investigated. Full subcategories of these categories are introduced consisting of objects , , where is a subset of all extensional subobjects of an object . It is proved that all these subcategories are quasi-reflective subcategories in the corresponding categories.
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.