4700  General reference works (handbooks, dictionaries, bibliographies, etc.)


4701  Instructional exposition (textbooks, tutorial papers, etc.)


4702  Research exposition (monographs, survey articles)


4703  Historical (must also be assigned at least one classification number from Section 01)


4704  Explicit machine computation and programs (not the theory of computation or programming)


4706  Proceedings, conferences, collections, etc.



47Axx  General theory of linear operators

47Bxx  Special classes of linear operators

47Cxx  Individual linear operators as elements of algebraic systems

47Dxx  Groups and semigroups of linear operators, their generalizations and applications

47E05  Ordinary differential operators [See also 34Bxx, 34Lxx]


47F05  Partial differential operators [See also 35Pxx, 58Jxx]


47Gxx  Integral, integrodifferential, and pseudodifferential operators [See also 58Jxx]

47Hxx  Nonlinear operators and their properties {For global and geometric aspects, see 58XX, especially 58Cxx}

47Jxx  Equations and inequalities involving nonlinear operators [See also 46Txx] {For global and geometric aspects, see 58XX}

47Lxx  Linear spaces and algebras of operators [See also 46Lxx]

47Nxx  Miscellaneous applications of operator theory [See also 46Nxx]

47Sxx  Other (nonclassical) types of operator theory [See also 46Sxx]
