EntityQ769917· pop 17· linked from 199 articlesstar domainSign in to saveproperty of point sets in Euclidean spacesConnectionsopen mapping theoremEntityreflexive spaceEntityconvex coneEntityConvex conjugateEntitygeometryEntityInternational Standard Book NumberEntitycomplex numberEntityreal numberEntitysetEntitycrossEntitydigital object identifierEntityInternational Standard Serial NumberEntityvector spaceEntityline segmentEntityempty setEntityOCLC, Inc.EntityJSTOROrganizationEuclidean spaceEntityHilbert spaceEntityunionEntityCategoriesConvex analysisEuclidean geometryFunctional analysisLinear algebra