EntityQ1780743· pop 18· linked from 487 articlescompact operatorSign in to savetype of continuous linear operatorConnectionsBanach algebraEntityspectrumEntityreflexive spaceEntitylinear mapEntitycountable setEntitynormed vector spaceEntityopen mapping theoremEntityoperator normEntityconvex coneEntitymathematicsEntityInternational Standard Book NumberEntitydigital object identifierEntityInternational Standard Serial NumberEntityvector spaceEntitysequenceEntityStefan BanachEntityOCLC, Inc.EntitysubsetEntityintervalEntityHilbert spaceEntityCategoriesCompactness (mathematics)Linear operatorsOperator theory