40XX 


Sequences, series, summability 


4000 
General reference works (handbooks, dictionaries, bibliographies, etc.) 


4001 
Instructional exposition (textbooks, tutorial papers, etc.) 


4002 
Research exposition (monographs, survey articles) 


4003 
Historical (must also be assigned at least one classification number from Section 01) 


4004 
Explicit machine computation and programs (not the theory of computation or programming) 


4006 
Proceedings, conferences, collections, etc. 

40Axx 

Convergence and divergence of infinite limiting processes 

40Bxx 

Multiple sequences and series 

40Cxx 

General summability methods 

40Dxx 

Direct theorems on summability 

40Exx 

Inversion theorems 

40Fxx 

Absolute and strong summability (should also be assigned at least one other classification number in Section 40) 

40Gxx 

Special methods of summability 

40Hxx 

Functional analytic methods in summability 

40Jxx 

Summability in abstract structures [See also 43A55, 46A35, 46B15] 