- 
                            
                            
                                                            
                            
                                                                    47B06                                                            
                            Riesz operators; eigenvalue distributions; approximation numbers, $s$-numbers, Kolmogorov numbers, entropy numbers, etc. of operators
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B07                                                            
                            Operators defined by compactness properties
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B10                                                            
                            Operators belonging to operator ideals (nuclear, $p$-summing, in the Schatten-von Neumann classes, etc.) [See also  
47L20]
 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B15                                                            
                            Hermitian and normal operators (spectral measures, functional calculus, etc.)
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B20                                                            
                            Subnormal operators, hyponormal operators, etc.
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B25                                                            
                            Symmetric and selfadjoint operators (unbounded)
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B32                                                            
                            Operators in reproducing-kernel Hilbert spaces (including de Branges, de Branges-Rovnyak, and other structured spaces) [See also  
46E22]
 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B33                                                            
                            Composition operators
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B34                                                            
                            Kernel operators
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B35                                                            
                            Toeplitz operators, Hankel operators, Wiener-Hopf operators [See also  
45P05,  
47G10 for other integral operators; see also  
32A25,  
32M15]
 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B36                                                            
                            Jacobi (tridiagonal) operators (matrices) and generalizations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B37                                                            
                            Operators on special spaces (weighted shifts, operators on sequence spaces, etc.)
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B38                                                            
                            Operators on function spaces (general)
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B39                                                            
                            Difference operators [See also  
39A70]
 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B40                                                            
                            Spectral operators, decomposable operators, well-bounded operators, etc.
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B44                                                            
                            Accretive operators, dissipative operators, etc.
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B47                                                            
                            Commutators, derivations, elementary operators, etc.
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B48                                                            
                            Operators on Banach algebras
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B49                                                            
                            Transformers, preservers (operators on spaces of operators)
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B50                                                            
                            Operators on spaces with an indefinite metric [See also  
46C50]
 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B60                                                            
                            Operators on ordered spaces
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B65                                                            
                            Positive operators and order-bounded operators
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B80                                                            
                            
                         
                                                - 
                            
                            
                                                            
                            
                                                                    47B99                                                            
                            None of the above, but in this section