Precompactness and total boundedness in products of metric spaces.
Precovers and Goldie’s torsion theory
Recently, Rim and Teply , using the notion of -exact modules, found a necessary condition for the existence of -torsionfree covers with respect to a given hereditary torsion theory for the category -mod of all unitary left -modules over an associative ring with identity. Some relations between -torsionfree and -exact covers have been investigated in . The purpose of this note is to show that if is Goldie’s torsion theory and is a precover class, then is a precover class whenever...
Predicative algebraic set theory.
Preface to the special volume: “Chu spaces: theory and applications".
Preradicals
Preradicals and change of rings
Presentations of étendues
Preserving homology.
Presheaves over the sets which need not be well ordered, functional separation of their inductive limits and their representation by sections
Prime extensions and nearness structures
Primitive classes of algebras with two unary idempotent operations, containing all algebraic categories as full subcategories
Primitive recursive categories and machines
Principal homogeneous objects as representable functors
Proarrows II
Product preserving bundle functors on fibered fibered manifolds
We investigate the category of product preserving bundle functors defined on the category of fibered fibered manifolds. We show a bijective correspondence between this category and a certain category of commutative diagrams on product preserving bundle functors defined on the category ℳ f of smooth manifolds. By an application of the theory of Weil functors, the latter category is considered as a category of commutative diagrams on Weil algebras. We also mention the relation with natural transformations...
Product preserving bundle functors on fibered manifolds
The complete description of all product preserving bundle functors on fibered manifolds in terms of natural transformations between product preserving bundle functors on manifolds is given.
Productive representations of semigroups by pairs of structures
Productivity of coreflective subcategories of uniform spaces
Products in Categories without Uniqueness of cod and dom
The paper introduces Cartesian products in categories without uniqueness of cod and dom. It is proven that set-theoretical product is the product in the category Ens [7].
Products of locally connected locales