{For the topology of manifolds of all dimensions, see 57Nxx}
54-00 General reference works (handbooks, dictionaries, bibliographies, etc.)
54-01 Instructional exposition (textbooks, tutorial papers, etc.)
54-02 Research exposition (monographs, survey articles)
54-03 Historical (must also be assigned at least one classification number from Section 01)
54-04 Explicit machine computation and programs (not the theory of computation or programming)
54-06 Proceedings, conferences, collections, etc.
54Axx Generalities
54Bxx Basic constructions
54Cxx Maps and general types of spaces defined by maps
54Dxx Fairly general properties
54Exx Spaces with richer structures
54Fxx Special properties
54Gxx Peculiar spaces
54Hxx Connections with other structures, applications
54J05 Nonstandard topology [See also 03H05]