28XX MEASURE AND INTEGRATION (For analysis on manifolds, see 58XX)
 2800 General reference works (handbooks, dictionaries, bibliographies, etc.)
 2801 Instructional exposition (textbooks, tutorial papers, etc.)
 2802 Research exposition (monographs, survey articles)
 2803 Historical (must also be assigned at least one classification number from Section 01)
 2804 Explicit machine computation and programs (not the theory of computation or programming)
 2806 Proceedings, conferences, collections, etc.

28Axx Classical measure theory
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 28Bxx Set functions, measures and integrals with values in abstract spaces
 28Cxx Set functions and measures on spaces with additional structure [See also 46G12, 58C35, 58D20]
 28Dxx Measuretheoretic ergodic theory [See also 11K50, 11K55, 22D40, 37Axx, 47A35, 54H20, 60Fxx, 60G10]
 28Exx Miscellaneous topics in measure theory