22-XX	Topological groups, Lie groups {For transformation groups, see 54H15, 57Sxx, 58-XX. For abstract harmonic analysis, see 43-XX}
22-00	General reference works (handbooks, dictionaries, bibliographies, etc.)
22-01	Instructional exposition (textbooks, tutorial papers, etc.)
22-02	Research exposition (monographs, survey articles)
22-03	Historical {!must also be assigned at least one classification number from section 01}
22-04	Explicit machine computation and programs (not the theory of computation or programming)
22-06	Proceedings, conferences, collections, etc.
22Axx	Topological and differentiable algebraic systems {For topological rings and fields, see 12Jxx, 13Jxx, 16W80}
22A05	Structure of general topological groups
22A10	Analysis on general topological groups
22A15	Structure of topological semigroups
22A20	Analysis on topological semigroups
22A22	Topological groupoids (including differentiable and Lie groupoids) [See also 58H05]
22A25	Representations of general topological groups and semigroups
22A26	Topological semilattices, lattices and applications [See also 06B30, 06B35, 06F30]
22A30	Other topological algebraic systems and their representations
22A99	None of the above, but in this section
22Bxx	Locally compact Abelian groups (LCA groups)
22B05	General properties and structure of LCA groups
22B10	Structure of group algebras of LCA groups
22B99	None of the above, but in this section
22C05	Compact groups
22Dxx	Locally compact groups and their algebras
22D05	General properties and structure of locally compact groups
22D10	Unitary representations of locally compact groups
22D12	Other representations of locally compact groups
22D15	Group algebras of locally compact groups
22D20	Representations of group algebras
22D25	C*-algebras and W*-algebras in relation to group representations [See also 46Lxx]
22D30	Induced representations
22D35	Duality theorems
22D40	Ergodic theory on groups [See also 28Dxx]
22D45	Automorphism groups of locally compact groups
22D99	None of the above, but in this section
22Exx	Lie groups {For the topology of Lie groups and homogeneous spaces, see 57Sxx, 57Txx; for analysis theorem, see 43A80, 43A85, 43A90}
22E05	Local Lie groups [See also 34-XX, 35-XX, 58H05]
22E10	General properties and structure of complex Lie groups [See also 32M05]
22E15	General properties and structure of real Lie groups
22E20	General properties and structure of other Lie groups
22E25	Nilpotent and solvable Lie groups
22E27	Representations of nilpotent and solvable Lie groups (special orbital integrals, non-type I representations, etc.)
22E30	Analysis on real and complex Lie groups [See also 33C80, 43-XX]
22E35	Analysis on p-adic Lie groups
22E40	Discrete subgroups of Lie groups [See also 20Hxx, 32Nxx]
22E41	Continuous cohomology [See also 57R32, 57Txx, 58H10]
22E43	Structure and representation of the Lorentz group
22E45	Representations of Lie and linear algebraic groups over real fields: analytic methods {For the purely algebraic theory, see 20G05}
22E46	Semisimple Lie groups and their representations
22E47	Representations of Lie and real algebraic groups: algebraic methods (Verma modules, etc.) [See also 17B10]
22E50	Representations of Lie and linear algebraic groups over local fields [See also 20G05]
22E55	Representations of Lie and linear algebraic groups over global fields and ad\`ele rings [See also 20G05]
22E60	Lie algebras of Lie groups {For the algebraic theory of Lie algebras, see 17Bxx}
22E65	Infinite-dimensional Lie groups and their Lie algebras [See also 17B65, 58B25, 58H05]
22E67	Loop groups and related constructions, group-theoretic treatment [See also 58D05]
22E70	Applications of Lie groups to physics; explicit representations [See also 81R05, 81R10]
22E99	None of the above, but in this section
22Fxx	Noncompact transformation groups
22F05	General theory of group and pseudogroup actions {For topological properties of spaces with an action, see 57S20}
22F10	Measurable group actions [See also 28Dxx and 22D40]
22F30	Homogeneous spaces {For general actions on manifolds or preserving geometrical structures, see 57M60, 57Sxx; for discrete subgroups of Lie groups, see especially 22E40}
22F50	Groups as automorphisms of other structures