-catégories and gamuts
Baer Addition of Extensions.
Baer invariants in semi-abelian categories I: General theory.
Baer invariants in semi-abelian categories II: Homology.
Baer sums and fibered aspects of Mal'cev operations
Balanced category theory.
Balanced coalgebroids.
Bar complexes and extensions of classical exponential functors
We compute Ext-groups between classical exponential functors (i.e. symmetric, exterior or divided powers) and their Frobenius twists. Our method relies on bar constructions, and bridges these Ext-groups with the homology of Eilenberg-Mac Lane spaces.This article completes earlier results of the author, and provides an alternative approach to classical Ext-computations in the category of strict polynomial functors over fields. We also obtain significant Ext-computations for strict polynomial functors...
Bar constructions for topological operads and the Goodwillie derivatives of the identity.
Basiserweiterung in der Homologie kleiner Kategorien.
Bass numbers and Golod rings.
Behaviour of finite automata in infinite environment [Abstract of thesis]
Behaviour of machines in categories
Bernstein-Gelfand-Gelfand reciprocity on perverse sheaves
Betti numbers of Buchsbaum complexes.
Betti numbers of monoid algebras. Applications to 2-dimensional torus imbeddings.
Bicartesian coherence revisited
Bicat is not triequivalent to Gray.
Bicategories of partial maps
Bicovariant differential calculi and cross products on braided Hopf algebras
In a braided monoidal category C we consider Hopf bimodules and crossed modules over a braided Hopf algebra H. We show that both categories are equivalent. It is discussed that the category of Hopf bimodule bialgebras coincides up to isomorphism with the category of bialgebra projections over H. Using these results we generalize the Radford-Majid criterion and show that bialgebra cross products over the Hopf algebra H are precisely described by H-crossed module bialgebras. In specific braided monoidal...