90-XX Economics, operations research, programming, games

• 90-00 General reference works (handbooks, dictionaries, bibliographies, etc.)
• 90-01 Instructional exposition (textbooks, tutorial papers, etc.)
• 90-02 Research exposition (monographs, survey articles)
• 90-03 Historical (must be assigned at least one classification number from 01-XX)
• 90-04 Explicit machine computation and programs (not the theory of computation or programming)
• 90-06 Proceedings, conferences, collections, etc.
• 90-08 Computational methods
• 90Axx Mathematical economics, {For econometrics, see 62P20}
• 90Bxx Operations research and management science
• 90Cxx Mathematical programming, see also {49Mxx, 65Kxx}
• 90Dxx Game theory