Large systems of independent objects in concrete categories. I
Large systems of independent objects in concrete categories. II
Limits and colimits in certain categories of spaces of continuous functions [Book]
Linking the closure and orthogonality properties of perfect morphisms in a category
We define perfect morphisms to be those which are the pullback of their image under a given endofunctor. The interplay of these morphisms with other generalisations of perfect maps is investigated. In particular, closure operator theory is used to link closure and orthogonality properties of such morphisms. A number of detailed examples are given.
Local extension of maps.