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mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
, in the field of general topology, a topological space is said to be mesocompact if every open cover has a ''compact-finite'' open refinement. That is, given any open cover, we can find an open refinement with the property that every compact set meets only finitely many members of the refinement.Pearl, p23 The following facts are true about mesocompactness: * Every compact space, and more generally every paracompact space is mesocompact. This follows from the fact that any locally finite cover is automatically compact-finite. * Every mesocompact space is metacompact, and hence also orthocompact. This follows from the fact that points are compact, and hence any compact-finite cover is automatically point finite.


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* * {{Citation, editor-first=Elliott, editor-last=Pearl, title=Open Problems in Topology II, year=2007, isbn=0-444-52208-5, publisher=Elsevier Compactness (mathematics) Properties of topological spaces