Approximations -- expansions-- Mathematics 80 Approximation theory 52 History 9 Mathematics 8 Numerical analysis 7 Mathematical optimization 5 Functional analysis 4 Asymptotic expansions 3 COMPTON SCATTERING 3 Computer algorithms 3 Congresses 3 Fourier analysis 3 Functions of complex variables 3 Hartree-Fock approximation 3 IMPULSE APPROXIMATION 3 Kings and rulers 3 Multivariate analysis 3 Numerical solutions 3 Polynomials 3 WKB approximation 3 Algorithms 2 Approximate methods 2 Approximations and expansions 2 Atoms 2 Aurangzeb, Emperor of Hindustan, 1618-1707 2 Calculus 2 Computational complexity 2 Computer science 2 Data processing 2 Differential equations 2