22E70 Applications of Lie groups to physics; explicit representations [See also <a href="#code:81R05">81R05</a>, <a href="#code:81R10">81R10</a>]

22E99 None of the above, but in this section

22F05 General theory of group and pseudogroup actions {For topological properties of spaces with an action, see <a href="#code:57S20">57S20</a>}

22F10 Measurable group actions [See also <a href="#code:22D40">22D40</a>, <a href="#code:28Dxx">28Dxx</a>, <a href="#code:37Axx">37Axx</a>]

22F30 Homogeneous spaces {For general actions on manifolds or preserving geometrical structures, see <a href="#code:57M60">57M60</a>, <a href="#code:57Sxx">57Sxx</a>; for discrete subgroups of Lie groups, see especially <a href="#code:22E40">22E40</a>}

22F50 Groups as automorphisms of other structures

22F99 None of the above, but in this section

26-XX Real functions [See also <a href="#code:54C30">54C30</a>]

26-00 General reference works (handbooks, dictionaries, bibliographies, etc.)

26-01 Instructional exposition (textbooks, tutorial papers, etc.)

26-02 Research exposition (monographs, survey articles)

26-03 Historical (must also be assigned at least one classification number from Section 01)

26-04 Explicit machine computation and programs (not the theory of computation or programming)

26-06 Proceedings, conferences, collections, etc.

26A03 Foundations: limits and generalizations, elementary topology of the line

26A12 Rate of growth of functions, orders of infinity, slowly varying functions [See also 26A48]

26A15 Continuity and related questions (modulus of continuity, semicontinuity, discontinuities, etc.) {For properties determined by Fourier coefficients, see <a href="#code:42A16">42A16</a>; for those determined by approximation properties, see <a href="#code:41A25">41A25</a>, <a href="#code:41A27">41A27</a>}

26A21 Classification of real functions; Baire classification of sets and functions [See also <a href="#code:03E15">03E15</a>, <a href="#code:28A05">28A05</a>, <a href="#code:54C50">54C50</a>, <a href="#code:54H05">54H05</a>]