51-XX Geometry, {For algebraic geometry, See 14-XX} ( 0 Dok.)

• 51-00 General reference works (handbooks, dictionaries, bibliographies, etc.) ( 0 Dok.)
• 51-01 Instructional exposition (textbooks, tutorial papers, etc.) ( 0 Dok.)
• 51-02 Research exposition (monographs, survey articles) ( 0 Dok.)
• 51-03 Historical (must be assigned at least one classification number from Section 01) ( 0 Dok.)
• 51-04 Explicit machine computation and programs (not the theory of computation or programming) ( 0 Dok.)
• 51-06 Proceedings, conferences, collections, etc. ( 0 Dok.)
• 51Axx Linear incidence geometry ( 0 Dok. )
• 51Bxx Nonlinear incidence geometry ( 0 Dok. )
• 51C05 Ring geometry (Hjelmslev, Barbilian, etc.) ( 0 Dok.)
• 51Dxx Geometric closure systems ( 0 Dok. )
• 51Exx Finite geometry and special incidence structures ( 0 Dok. )
• 51Fxx Metric geometry ( 0 Dok. )
• 51G05 Ordered geometries (ordered incidence structures, etc.) ( 0 Dok.)
• 51Hxx Topological geometry ( 0 Dok. )
• 51Jxx Incidence groups ( 0 Dok. )
• 51Kxx Distance geometry ( 0 Dok. )
• 51Lxx Geometric order structures, See also {53C75} ( 0 Dok. )
• 51Mxx Real and complex geometry ( 0 Dok. )
• 51Nxx Analytic and descriptive geometry ( 0 Dok. )
• 51P05 Geometry and physics (should also be assigned at least one other classification number from Sections 70--86) ( 0 Dok.)