SEARCH Articles Figures Tables Cluster expansion methods size-extensive theory Cluster expansion methods size-extensivity Configuration interaction size extensivity Configuration interaction size extensivity corrections Configuration-interaction theory size-extensivity Electron correlation methods size extensivity Expansion and Size-Extensivity Hartree-Fock theory size-extensivity Mpller-Plesset perturbation theory size-extensivity Potential energy surface size-extensivity Rayleigh-Schrodinger perturbation theory size-extensivity Size Extensivity of the Coupled Cluster Energy Size extensive formulations Size extensive formulations Hamiltonian Size extensive formulations applications Size extensive formulations general formulation Size extensive formulations incomplete model space Size extensivity error Size extensivity iterative corrections Size-extensive Size-extensivity Ansatz Size-extensivity additive separability Size-extensivity limited CISD methods Size-extensivity manifest separability Size-extensivity molecules Size-extensivity multiplicative separability Size-extensivity of exact wave functions Size-extensivity of exponential wave functions Size-extensivity of linear variational wave functions Space size extensivity corrections Termwise size-extensivity Theoretical model size-extensivity