Fourier and harmonic analysis 130 Harmonic analysis 43 Mathematics 19 Philosophy 12 Physics 10 Arts 8 Functions of complex variables 8 Mathematical analysis 7 Music 7 Quantum theory 7 Functional analysis 6 Psychology 6 Signal processing 6 Harmonic functions-- Mathematical analysis 5 Lecture Notes in Mathematics 5 Approximation theory 4 Folklore 4 Fourier analysis 4 Harmonic functions 4 Law 4 Mathematical physics 4 Nonlinear optics 4 Operator theory 4 Yoga 4 Astronomy 3 Bases (Linear topological spaces) 3 Communal harmony 3 Communalism 3 Dissertations, Academic (Ph.D) 3 Economic growth-- Economic Planning 3