40-XX Sequences, series, summability

• 40-00 General reference works (handbooks, dictionaries, bibliographies, etc.)
• 40-01 Instructional exposition (textbooks, tutorial papers, etc.)
• 40-02 Research exposition (monographs, survey articles)
• 40-03 Historical (must be assigned at least one classification number from 01-XX)
• 40-04 Explicit machine computation and programs (not the theory of computation or programming)
• 40-06 Proceedings, conferences, collections, etc.
• 40Axx Convergence and divergence of infinite limiting processes
• 40B05 Multiple sequences and series {(should also be assigned at least one other classification number in this section)}
• 40Cxx General summability methods
• 40Dxx Direct theorems on summability
• 40Exx Inversion theorems
• 40F05 Absolute and strong summability
• 40Gxx Special methods of summability
• 40H05 Functional analytic methods in summability
• 40J05 Summability in abstract structures, See also {43A55, 46A35, 46B15}