LOCAL SUPERDIRECT SELF-CONSISTENT-FIELD

A ''local superdirect self-consistent field (SCF)'' method has been de veloped which reduces the computational cost of a typical Hartree-Fock procedure from N4 to N2 more quickly than conventional SCF for a give n molecular size. The program is based on the authors' modifications p f density matrix formalism, the local space approximation, and a direc t SCF method. Special features include more efficient integral upper-b ound formulas as integral prescreening techniques and ''superdirect'' prescreening of the projected Fock matrix elements.