# SEARCH

** An Approximate Second-order Perturbation Treatment **

** Approximation methods second-order energy) **

** Approximations higher-order modes **

** Approximations of Higher Order **

** Atoms higher-order approximations **

** Boltzmann equation first-order approximation **

** Bond order approximation, definition **

** Born approximation, zeroth-order **

** Convergence order finite difference approximations **

** Crude Born-Oppenheimer approximation first-order derivatives **

** Determination of Spectra from Viscoelastic Functions Using First-Order Approximations **

** First-Order Regular Approximation **

** First-Order Regular Approximation method **

** First-order absorption models approximation with **

** First-order approximation differential equations **

** First-order approximation, relaxation **

** First-order approximation, relaxation spectra **

** First-order polarization propagator approximation **

** Fourth-order, generally approximations **

** Hamiltonian Zeroth-order regular approximation **

** Hamiltonian infinite-order regular approximation **

** Hamiltonians zeroth-order regular approximation **

** Hartree-Fock approximation zeroth-order Hamiltonian **

** High-Order Compact (Hermitian) Current Approximation **

** Higher Order Approximation Techniques **

** Higher-order orbital approximations **

** Higher-order orbital approximations configurations **

** Higher-order phase integral approximation **

** Hydrogen molecule zero-order approximation **

** Infinite order sudden approximation IOSA) **

** Infinite-Order Regular Approximation **

** Infinite-order sudden approximation **

** Matrix first-order approximation **

** Pseudo-first order approximation **

** Reactive infinite-order sudden approximate **

** Reduced-order models approximation errors **

** Rotational Infinite Order Sudden Approximation **

** Second order polarization propagator approximation **

** Second-Order Polarization Propagator Approximation model **

** Second-order Polarization Propagator Approximation Calculations **

** Second-order approximation, constrained **

** Second-order approximation, time-dependent **

** Second-order approximation, time-dependent transfer **

** Second-order ladder approximation **

** Second-order perturbation theory approximate **

** Second-order regular approximation **

** Steady states first-order approximation **

** Subject zero-order approximation **

** The Electronic States of Atoms. III. Higher-Order Approximations **

** Third-order polarization propagator approximation **

** Wave functions, approximate correct zeroth-order **

** Zero-Order Regular Approximation **

** Zero-Order Regular Approximation model **

** Zero-order approximation excited state **

** Zero-order approximation ground state **

** Zero-order approximation probability density **

** Zero-order approximation, natural **

** Zero-order regular approximation ZORA) **

** Zeroth order regular approximation for relativistic effects **

** Zeroth-order approximation calculation **

** Zeroth-order approximation states **

** Zeroth-order approximations construction **

** Zeroth-order polarization propagator approximation **

** Zeroth-order regular approximation **

** Zeroth-order regular approximation (ZORA **

** Zeroth-order regular approximation Hamiltonian/method **