22-XX | 20 | Top | 26 |
| 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} |
| 22Bxx | Locally compact abelian groups (LCA groups) |
| 22C05 | Compact groups |
| 22Dxx | Locally compact groups and their algebras |
| 22Exx | Lie groups {For the topology of Lie groups and homogeneous spaces, see 57Sxx, 57Txx; for analysis thereon, see 43A80, 43A85, 43A90} |
| 22Fxx | Noncompact transformation groups |