Semidirect products of categorical groups. Obstruction theory.
Semi-infinite homological algebra.
Separable K-linear categories
We define and investigate separable K-linear categories. We show that such a category C is locally finite and that every left C-module is projective. We apply our main results to characterize separable linear categories that are spanned by groupoids or delta categories.
Separable morphisms of simplicial sets.
Serre functors for Lie algebras and superalgebras
We propose a new realization, using Harish-Chandra bimodules, of the Serre functor for the BGG category associated to a semi-simple complex finite dimensional Lie algebra. We further show that our realization carries over to classical Lie superalgebras in many cases. Along the way we prove that category and its parabolic generalizations for classical Lie superalgebras are categories with full projective functors. As an application we prove that in many cases the endomorphism algebra of the basic...
Shape and strong shape equivalences
Shimuravarietäten und Gerben.
Simplicial and categorical diagrams, and their equivariant applications.
Simplicial and crossed Lie algebras.
Simplicial approximation.
Simplicial chains over a field and p-local homotopy theory.
Simplicial crossed modules and mapping cones.
Simplicial groups as models for -types
Simplicial matrices and the nerves of weak -categories I: Nerves of bicategories.
Simplicial Sets from Categories.
Simplicial T-complexes and crossed complexes: a non-abelian version of a theorem of Dold and Kan [Book]
Simplicial torsors.
link homology.
Small models for chain algebras.
Smash product of -local spectra at an odd prime