On natural merotopies
On Neeman's well generated triangulated categories.
On nets of free polygons over a category and their categories of homomorphisms
On nonstandard tame selfinjective algebras having only periodic modules
We investigate degenerations and derived equivalences of tame selfinjective algebras having no simply connected Galois coverings but the stable Auslander-Reiten quiver consisting only of tubes, discovered recently in [4].
On n-permutable equivalence relations in regular categories
On orderings of the system of subsets of ordered sets
On paracompact locales and metric locales
On Priestley duals of products
On primeness and maximality of filters
On product and change of base for toposes
On Products in a Family of Cohomology Theories Associated to the Invariant Prime Ideals of ... (BP).
On products in generalized algebraic categories
On projective and injective objects of the categories dual to .
On projective resolutions of flat modules
On projectiveness in H-closed spaces
On property-like structures.
On pure global dimension of locally finitely presented Grothendieck categories
On pure quotients and pure subobjects
In the theory of accessible categories, pure subobjects, i.e. filtered colimits of split monomorphisms, play an important role. Here we investigate pure quotients, i.e., filtered colimits of split epimorphisms. For example, in abelian, finitely accessible categories, these are precisely the cokernels of pure subobjects, and pure subobjects are precisely the kernels of pure quotients.
On pure semi-simple Grothendieck categories I
On pure semi-simple Grothendieck categories II