Mathematical Sciences Classification System
44Axx - Integral transforms, operational calculus 
{For fractional derivatives and integrals, see  26A33. For Fourier transforms, see  42A38,  42B10. For integral transforms in distribution spaces, see  46F12. For numerical methods, see  65R10}
                    - 
                            
                            44A05General transforms [See also 42A38]
 - 
                            
                            44A10Laplace transform
 - 
                            
                            44A12Radon transform [See also 92C55]
 - 
                            
                            44A15Special transforms (Legendre, Hilbert, etc.)
 - 
                            
                            44A20Transforms of special functions
 - 
                            44A30Multiple transforms
 - 
                            44A35Convolution
 - 
                            
                            44A40Calculus of Mikusiński and other operational calculi
 - 
                            
                            44A45Classical operational calculus
 - 
                            
                            44A55Discrete operational calculus
 - 
                            
                            44A60Moment problems
 - 
                            44A99None of the above, but in this section