03-XX | 01 | Top | 05 |
| 03-00 | General reference works (handbooks, dictionaries, bibliographies, etc.) |
| 03-01 | Instructional exposition (textbooks, tutorial papers, etc.) |
| 03-02 | Research exposition (monographs, survey articles) |
| 03-03 | Historical (must also be assigned at least one classification number from Section 01) |
| 03-04 | Explicit machine computation and programs (not the theory of computation or programming) |
| 03-06 | Proceedings, conferences, collections, etc. |
| 03-99 | None of the above, but in this section |
| 03A05 | Philosophical and critical {For philosophy of mathematics, see also 00A30} |
| 03Bxx | General logic |
| 03Cxx | Model theory |
| 03Dxx | Computability and recursion theory |
| 03Exx | Set theory |
| 03Fxx | Proof theory and constructive mathematics |
| 03Gxx | Algebraic logic |
| 03Hxx | Nonstandard models [See also 03C62] |