Strong regular and dense generators
Strongly -Gorenstein modules
Let be a self-orthogonal class of left -modules. We introduce a class of modules, which is called strongly -Gorenstein modules, and give some equivalent characterizations of them. Many important classes of modules are included in these modules. It is proved that the class of strongly -Gorenstein modules is closed under finite direct sums. We also give some sufficient conditions under which the property of strongly -Gorenstein module can be inherited by its submodules and quotient modules....
Strongly groupoid graded rings and cohomology
We interpret the collection of invertible bimodules as a groupoid and call it the Picard groupoid. We use this groupoid to generalize the classical construction of crossed products to what we call groupoid crossed products, and show that these coincide with the class of strongly groupoid graded rings. We then use groupoid crossed products to obtain a generalization from the group graded situation to the groupoid graded case of the bijection from a second cohomology group, defined by the grading...
Structural properties of endofunctors
Structuration cognitive et logique intrinsèque
À travers l'étude d'un modèle de représentation des connaissances comme catégorie de faisceaux de traits localement définis ; ce texte montre que la théorie des topoï permet de décrire formellement l'émergence d'une logique intrinsèque à partir d'une approche relationnelle, qu'elle soit structurale ou cognitive. On peut alors caractériser mathématiquement le défaut d'intensionnalité des modèles classiques, et montrer qu'une solution est dans la mathématisation de structures entièrement relationnelles....
Structure des topologies d'un topos
Structure functors - Compositions of arbitrary right adjoints with topological functors I -
Structure morphisms of prolongation functors
Structure of additive categories
Structure theory for the group algebra of the symmetric group, with applications to polynomial identities for the octonions
This is a survey paper on applications of the representation theory of the symmetric group to the theory of polynomial identities for associative and nonassociative algebras. In §1, we present a detailed review (with complete proofs) of the classical structure theory of the group algebra of the symmetric group over a field of characteristic 0 (or ). The goal is to obtain a constructive version of the isomorphism where is a partition of and counts the standard tableaux of shape ....
Structured lattices and ground categories of -sets.
Structures algébriques : thème et variations
Structures d’asphéricité, foncteurs lisses, et fibrations
Le but de cet article est de généraliser la théorie des foncteurs lisses de Grothendieck afin d’inclure dans ce cadre la théorie des catégories fibrées. On obtient en particulier une nouvelle caractérisation des catégories fibrées.
Structures de contact, extension du calcul des jets (1ère partie)
Structures de contact, extension du calcul des jets (2ème partie)
Structures defined by finite limits in the enriched context, I
Structures pseudo-algébriques (1ère partie)
Structures Quasi-Quotient.
Su un universo di dispositivi monotoni
Subcategories of the derived category and cotilting complexes
We show that there is a one-to-one correspondence between basic cotilting complexes and certain contravariantly finite subcategories of the bounded derived category of an artin algebra. This is a triangulated version of a result by Auslander and Reiten. We use this to find an existence criterion for complements to exceptional complexes.