Approximation of the identity

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

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

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