19-XX $K$-theory, See also {16E20, 18F25} ( 0 Dok.)

• 19-00 General reference works (handbooks, dictionaries, bibliographies, etc.) ( 0 Dok.)
• 19-01 Instructional exposition (textbooks, tutorial papers, etc.) ( 0 Dok.)
• 19-02 Research exposition (monographs, survey articles) ( 0 Dok.)
• 19-03 Historical (must be assigned at least one classification number from Section 01) ( 0 Dok.)
• 19-04 Explicit machine computation and programs (not the theory of computation or programming) ( 0 Dok.)
• 19-06 Proceedings, conferences, collections, etc. ( 0 Dok.)
• 19Axx Grothendieck groups and $K_0$, See also {13D15, 18F30} ( 0 Dok. )
• 19Bxx Whitehead groups and $K_1$ ( 0 Dok. )
• 19Cxx Steinberg groups and $K_2$ ( 0 Dok. )
• 19Dxx Higher algebraic $K$-theory ( 0 Dok. )
• 19Exx $K$-theory in geometry ( 0 Dok. )
• 19Fxx $K$-theory in number theory, See also {11R70, 11S70} ( 0 Dok. )
• 19Gxx $K$-theory of forms, See also {11Exx} ( 0 Dok. )
• 19Jxx Obstructions from topology ( 0 Dok. )
• 19Kxx $K$-theory and operator algebras See mainly{ 46L80, and also 46M20} ( 0 Dok. )
• 19Lxx Topological $K$-theory, See also {55N15, 55R50, 55S25} ( 0 Dok. )
• 19M05 Miscellaneous applications of $K$-theory ( 0 Dok.)