A Method for Constructing Coreflections for Nearness Frames

摘要

We provide a fairly general method, which is straightforward and widely applicable, for constructing some coreflections in the category of nearness frames. The method captures all coreflective subcategories with 1 -aEuro parts per thousand 1 coreflection maps; this includes the well-known uniform, totally bounded and separable coreflections.