> 47-XX Operator theory > 47LXX Linear spaces and algebras of operators

47L05 Linear spaces of operators	47L07 Convex sets and cones of operators	47L10 Algebras of operators on Banach spaces and other topological linear spaces
47L15 Operator algebras with symbol structure	47L20 Operator ideals	47L25 Operator spaces (= matricially normed spaces)
47L30 Abstract operator algebras on Hilbert spaces	47L35 Nest algebras, CSL algebras	47L40 Limit algebras, subalgebras of $C^*$-algebras
47L45 Dual algebras; weakly closed singly generated operator algebras	47L50 Dual spaces of operator algebras	47L55 Representations of (nonselfadjoint) operator algebras
47L60 Algebras of unbounded operators; partial algebras of operators	47L65 Crossed product algebras (analytic crossed products)	47L70 Nonassociative nonselfadjoint operator algebras
47L75 Other nonselfadjoint operator algebras	47L80 Algebras of specific types of operators (Toeplitz, integral, pseudodifferential, etc.)	47L90 Applications of operator algebras to physics
47L99 None of the above, but in this section

47LXX Linear spaces and algebras of operators