39-XX
37 | 
Top | 
40 39-XX | 37 | Top | 40 |
| 39-00 | General reference works (handbooks, dictionaries, bibliographies, etc.) |
| 39-01 | Instructional exposition (textbooks, tutorial papers, etc.) |
| 39-02 | Research exposition (monographs, survey articles) |
| 39-03 | Historical (must also be assigned at least one classification number from Section 01) |
| 39-04 | Explicit machine computation and programs (not the theory of computation or programming) |
| 39-06 | Proceedings, conferences, collections, etc. |
| 39Axx | Difference equations {For dynamical systems, see 37-XX} |
| 39Bxx | Functional equations and inequalities [See also 30D05] |