Approximation, Order of approximation, Diophantine approximation, Approximation algorithm, Approximation theory, Linear approximation, Successive-approximation ADC, Stirling's approximation, Born approximation, Polynomial-time approximation scheme, Approximation in algebraic groups, WKB approximation, Superstrong approximation, Minimax approximation algorithm, Dirichlet's approximation theorem, Discrete dipole approximation, Born–Huang approximation, Spouge's approximation, Bhāskara I's sine approximation formula, Two-stream approximation, Paraxial approximation, Laplace's approximation, Journal of Approximation Theory, Boussinesq approximation, Cellular approximation theorem, Successive approximation, Supersymmetric WKB approximation, Rational approximation, High-frequency approximation, Percus–Yevick approximation, Artin approximation theorem, Simplicial approximation theorem, Weak approximation, Born–Oppenheimer approximation, Approximations of π, Rotating-wave approximation, Muffin-tin approximation, Komlós–Major–Tusnády approximation, Low-rank approximation, Approximation error, Small-angle approximation

Local-density approximation, Coherent potential approximation, Sheth–Tormen approximation, Slowly varying envelope approximation, Patched conic approximation, Approximation property (ring theory), Least-squares function approximation, Fully polynomial-time approximation scheme, Approximation to the identity, Stochastic approximation, Binomial approximation, Heavy traffic approximation, Function approximation, Rayleigh–Gans approximation, Constructive Approximation, Hardness of approximation, Low-rank matrix approximations, Typographic approximation, Sparse approximation, Simultaneous perturbation stochastic approximation, Side-approximation theorem, Eikonal approximation, Derjaguin approximation, Approximation property, McKay's approximation for the coefficient of variation, Parameterized approximation algorithm, Quenched approximation, Random phase approximation, Empty lattice approximation, East Journal on Approximations, APX, Approximation-preserving reduction, Quasistatic approximation, Korovkin approximation, GW approximation, Sigma approximation, Acoustic approximation, Vecchia approximation, Effective medium approximations, Steady state (chemistry), Lanczos approximation, Fitness approximation, CUR matrix approximation, Bernstein's theorem (approximation theory), Padé approximant, Stone–Weierstrass theorem, Kronecker's theorem, Kirkwood approximation, Beta plane, Universal approximation theorem

Approximation, Order of approximation, Diophantine approximation, Approximation algorithm, Approximation theory, Linear approximation, Successive-approximation ADC, Stirling's approximation, Born approximation, Polynomial-time approximation scheme, Approximation in algebraic groups, WKB approximation, Superstrong approximation, Minimax approximation algorithm, Dirichlet's approximation theorem, Discrete dipole approximation, Born–Huang approximation, Spouge's approximation, Bhāskara I's sine approximation formula, Two-stream approximation, Paraxial approximation, Laplace's approximation, Journal of Approximation Theory, Boussinesq approximation, Cellular approximation theorem, Successive approximation, Supersymmetric WKB approximation, Rational approximation, High-frequency approximation, Percus–Yevick approximation, Artin approximation theorem, Simplicial approximation theorem, Weak approximation, Born–Oppenheimer approximation, Approximations of π, Rotating-wave approximation, Muffin-tin approximation, Komlós–Major–Tusnády approximation, Low-rank approximation, Approximation error, Small-angle approximation, Local-density approximation, Coherent potential approximation, Sheth–Tormen approximation, Slowly varying envelope approximation, Patched conic approximation, Approximation property (ring theory), Least-squares function approximation, Fully polynomial-time approximation scheme, Approximation to the identity, Stochastic approximation, Binomial approximation, Heavy traffic approximation, Function approximation, Rayleigh–Gans approximation, Constructive Approximation, Hardness of approximation, Low-rank matrix approximations, Typographic approximation, Sparse approximation, Simultaneous perturbation stochastic approximation, Side-approximation theorem, Eikonal approximation, Derjaguin approximation, Approximation property, McKay's approximation for the coefficient of variation, Parameterized approximation algorithm, Quenched approximation, Random phase approximation, Empty lattice approximation, East Journal on Approximations, APX, Approximation-preserving reduction, Quasistatic approximation, Korovkin approximation, GW approximation, Sigma approximation, Acoustic approximation, Vecchia approximation, Effective medium approximations, Steady state (chemistry), Lanczos approximation, Fitness approximation, CUR matrix approximation, Bernstein's theorem (approximation theory), Padé approximant, Stone–Weierstrass theorem, Kronecker's theorem, Kirkwood approximation, Beta plane, Universal approximation theorem, Saddlepoint approximation method, Müntz–Szász theorem, Wien approximation, Boussinesq approximation (buoyancy), Independent electron approximation, Boussinesq approximation (water waves), Oka–Weil theorem, Model solid approximation, Adam Adamandy Kochański, Mergelyan's theorem, Quasi-harmonic approximation, Diffuse element method, K-minimum spanning tree, K-approximation of k-hitting set, Weak temperature gradient approximation, Schlick's approximation, Progressive-iterative approximation method, Stokes approximation and artificial time, Dynamical mean-field theory, Markov chain approximation method, Continuous slowing down approximation range, Central field approximation, Convex volume approximation, Moment closure, Binary collision approximation, Korringa–Kohn–Rostoker method, Iterative method, Geometric set cover problem, Taylor's theorem, Runge's theorem, Integrated nested Laplace approximations, Minimum-weight triangulation, Impact depth, Pi Day, Black's approximation, Gaussian process approximations, Mean-field theory, Nearly free electron model, Simple rational approximation, Wiener connector, Fresnel diffraction, Maximum cut, Gas in a box, Liouville number, Cauchy–Born rule, Bethe–Salpeter equation, Thin lens, Independent set (graph theory), Opaque set, Adiabatic theorem, Semiclassical, Fluid limit, Relaxation (approximation), Laser linewidth, Stationary phase approximation, Shaping (psychology), Post-Newtonian expansion, Simple continued fraction, Partition problem, Numerical integration