EntityQ1198874· pop 17· linked from 331 articlesoperator theorySign in to savemathematical study of linear operators on function spaces, such as differential operators and integral operatorsConnectionslinear mapEntityeigenvectors and eigenvaluesEntitybounded operatorEntityself-adjoint operatorEntitymathematicsEntityInternational Standard Book NumberEntitycomplex numberEntitytopologyEntitymatrixEntitytheoremEntitycontinuous functionEntityHilbert spaceEntityfunctional analysisEntityRiemann hypothesisEntitycalculus of variationsEntityholomorphic functionEntityBanach spaceEntitydiagonal matrixEntitytriangular matrixEntitycommutative ringEntityCategoriesOperator theory