| MSC 1991 | Number of Preprints | |
| 93-XX | Systems theory; control
| 2 | browse |
| 93-00 | General reference works (handbooks, dictionaries, bibliographies, etc.)
| 2 | browse |
| 93-01 | Instructional exposition (textbooks, tutorial papers, etc.)
| 2 | browse |
| 93-02 | Research exposition (monographs, survey articles)
| 2 | browse |
| 93-03 | Historical
| 2 | browse |
| 93-04 | Explicit machine computation and programs (not the theory of computation or programming)
| 2 | browse |
| 93-06 | Proceedings, conferences, collections, etc.
| 2 | browse |
| 93Axx | General
| 7 | browse |
| 93Bxx | Controllability, observability, and system structure
| 56 | browse |
| 93Cxx | Control systems, guided systems
| 47 | browse |
| 93Dxx | Stability
| 19 | browse |
| 93Exx | Stochastic systems and control
| 28 | browse |