EntityQ320346· pop 25· linked from 201 articlesclosureSign in to savein a topological space, the smallest closed set containing a given setConnectionssubsetEntitycontinuous functionEntitymanifoldEntitypower setEntityballEntitydense setEntitylimit pointEntitysubspace topologyEntitydiscrete spaceEntitytrivial topologyEntitytopological manifoldEntityopen and closed mapsEntityInternational Standard Book NumberEntitycomplex numberEntityreal numberEntitytopologyEntityrational numberEntitysphereEntityInternet ArchiveEntitysequenceEntityCategoriesClosure operatorsGeneral topology