Function sequant::mbpt::bernoulli::detail::R_part

• Defined in File bernoulli.cpp

Function Documentation

ExprPtr sequant::mbpt::bernoulli::detail::R_part(const ExprPtr &expr, std::size_t cutoff, std::size_t min_rank)

R part (O_R of 10.1063/1.5030344: expr minus its N part). Unlike N_part the result is NOT block-resolved; it stays in compact general-index form, which is much cheaper for the nested commutators that consume R.