43A07 Means on groups, semigroups, etc.; amenable groups

43A10 Measure algebras on groups, semigroups, etc.

43A15 $L^p$-spaces and other function spaces on groups, semigroups, etc.

43A17 Analysis on ordered groups, $H^p$-theory

43A20 $L^1$-algebras on groups, semigroups, etc.

43A22 Homomorphisms and multipliers of function spaces on groups, semigroups, etc.

43A25 Fourier and Fourier-Stieltjes transforms on locally compact and other abelian groups

43A30 Fourier and Fourier-Stieltjes transforms on nonabelian groups and on semigroups, etc.

43A32 Other transforms and operators of Fourier type

43A35 Positive definite functions on groups, semigroups, etc.

43A45 Spectral synthesis on groups, semigroups, etc.

43A46 Special sets (thin sets, Kronecker sets, Helson sets, Ditkin sets, Sidon sets, etc.)

43A50 Convergence of Fourier series and of inverse transforms

43A55 Summability methods on groups, semigroups, etc. [See also <a href="#code:40J05">40J05</a>]

43A60 Almost periodic functions on groups and semigroups and their generalizations (recurrent functions, distal functions, etc.); almost automorphic functions

43A65 Representations of groups, semigroups, etc. [See also <a href="#code:22A10">22A10</a>, <a href="#code:22A20">22A20</a>, <a href="#code:22Dxx">22Dxx</a>, <a href="#code:22E45">22E45</a>]

43A70 Analysis on specific locally compact and other abelian groups [See also <a href="#code:11R56">11R56</a>, <a href="#code:22B05">22B05</a>]

43A75 Analysis on specific compact groups

43A77 Analysis on general compact groups

43A80 Analysis on other specific Lie groups [See also <a href="#code:22Exx">22Exx</a>]

43A90 Spherical functions [See also <a href="#code:22E45">22E45</a>, <a href="#code:22E46">22E46</a>, <a href="#code:33C55">33C55</a>]

43A95 Categorical methods [See also <a href="#code:46Mxx">46Mxx</a>]

43A99 None of the above, but in this section

44-XX Integral transforms, operational calculus {For fractional derivatives and integrals, see <a href="#code:26A33">26A33</a>. For Fourier transforms, see <a href="#code:42A38">42A38</a>, <a href="#code:42B10">42B10</a>. For integral transforms in distribution spaces, see <a href="#code:46F12">46F12</a>. For numerical methods, see <a href="#code:65R10">65R10</a>}