SEARCH Articles Figures Tables A Computer-Algebraic Approach to the Derivation of Feynman-Goldstone Perturbation Expansions for Open-Shell Atoms and Molecules Asymptotic expansions domain perturbation Coupled cluster method perturbation expansion Dependence of Perturbation Expansions Distribution functions perturbative expansion Extended model space, perturbation expansion Hirschfelder-Silbey perturbation expansion Multi-reference function perturbation expansion Multiple perturbation expansion Pade Approximants and Perturbation Expansions Perturbation Energy Expansion Perturbation expansion from an extended model space Perturbation expansion of the correlation energy Perturbation expansion of the operators Perturbation expansion, multi-reference Perturbation expansion, single-reference Perturbation expansion, single-reference function Perturbation expansion, vibrational energy Perturbation expansion, vibrational energy relaxation Perturbation expansions Brillouin-Wigner Perturbation expansions Feynman-Goldstone Perturbation series expansion Perturbative Expansion Exponentially Small Errors Perturbative equations function expansion Perturbative expansion Perturbative expansion Rayleigh-Schrodinger perturbation expansion Regular Perturbative Expansion of the Reduced Liouville Equation for Dense Gases and Liquids Space perturbation expansion Systematic Perturbation Expansion The perturbation expansion Wave function double perturbation expansion