Fourier transform-- Hilbert transform-- Laplace transform-- Integral transform 31 Fourier transformations 20 Fourier and harmonic analysis 9 Fourier analysis 8 Mathematics 8 Harmonic analysis 7 Fourier transform spectroscopy 6 Computer algorithms 4 Data processing 4 Differential equations, Partial 4 Algebra 3 Computer science 3 Differential equations, Linear 3 Fourier series 3 Fourier transforms 3 Mathematical models 3 Signal processing 3 System analysis 3 Fourier transformation 2 Functional analysis 2 Functions of complex variables-- Analysis-- Mathematics 2 Functions of several complex variables 2 Laplace transformation 2 Locally compact Abelian groups 2 Nuclear Magnetic Resonance Spectroscopy 2 Physics 2 Raman spectroscopy 2 SCIENCE / Spectroscopy & Spectrum Analysis 2 Signal processing -- Digital techniques 2 Wavelets (Mathematics) 2