> 16-XX Associative rings and algebras

16-00 General reference works (handbooks, dictionaries, bibliographies, etc.)	16-01 Instructional exposition (textbooks, tutorial papers, etc.)	16-02 Research exposition (monographs, survey articles)
16-03 Historical (must also be assigned at least one classification number from Section 01)	16-04 Explicit machine computation and programs (not the theory of computation or programming)	16-06 Proceedings, conferences, collections, etc.
16-99 Associative rings and algebras (not classified at a more specific level)	16BXX General and miscellaneous	16DXX Modules, bimodules and ideals
16EXX Homological methods	16GXX Representation theory of rings and algebras	16H05 Orders and arithmetic, separable algebras, Azumaya algebras
16KXX Division rings and semisimple Artin rings	16LXX Local rings and generalizations	16NXX Radicals and radical properties of rings
16PXX Chain conditions, growth conditions, and other forms of finiteness	16RXX Rings with polynomial identity	16SXX Rings and algebras arising under various constructions
16UXX Conditions on elements	16WXX Rings and algebras with additional structure	16YXX Generalizations
16Z05 Computational aspects of associative rings

16-XX Associative rings and algebras