06-XX
05 | 
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08 06-XX | 05 | Top | 08 |
| 06-00 | General reference works (handbooks, dictionaries, bibliographies, etc.) |
| 06-01 | Instructional exposition (textbooks, tutorial papers, etc.) |
| 06-02 | Research exposition (monographs, survey articles) |
| 06-03 | Historical (must also be assigned at least one classification number from Section 01) |
| 06-04 | Explicit machine computation and programs (not the theory of computation or programming) |
| 06-06 | Proceedings, conferences, collections, etc. |
| 06Axx | Ordered sets |
| 06Bxx | Lattices [See also 03G10] |
| 06Cxx | Modular lattices, complemented lattices |
| 06Dxx | Distributive lattices |
| 06Exx | Boolean algebras (Boolean rings) [See also 03G05] |
| 06Fxx | Ordered structures |