## Mathematics Subject Classification – MSC2010

General reference works (handbooks, dictionaries, bibliographies, etc.) 14

Instructional exposition (textbooks, tutorial papers, etc.) 345

Research exposition (monographs, survey articles) 498

Explicit machine computation and programs (not the theory of computation or programming) 130

Ljusternik-Schnirelman (Lyusternik-Shnirel’man) category of a space 690

Generalized (extraordinary) homology and cohomology theories 1057

Spectra with additional structure ($E_\infty$, $A_\infty$, ring spectra, etc.) 304

Stable classes of vector space bundles, $K$-theory [See also 19Lxx] [For algebraic $K$-theory, see 18F25, 19-XX] 520