Boots – shoes – and leggings
Patent
1993-07-16
1997-02-18
Ramirez, Ellis B.
Boots, shoes, and leggings
364496, G06F 1750
Patent
active
056046863
ABSTRACT:
A method and apparatus analyze chemical compounds from molecular geometric data of a chemical compound. Localized molecular orbitals are used to form a density matrix and a Fock matrix. The method and apparatus performs an annihilation process on the Fock matrix to interactively eliminate the interaction of each bonding orbital with each non-bonding orbital, i.e., .psi.F.psi.*, where .psi. is a bonding orbital, F is a corresponding member of the Fock matrix and .psi.* is an antibonding orbital. The annihilation process involves a simple diagonalization of a 2.times.2 matrix and replaces the very lengthy calculation of diagonalizing the Fock matrix, as is done in the related art. To further speed up the process, the method and apparatus of the present invention determine which of the bonding orbitals and antibonding orbitals cannot interact using interatomic distances. The interaction for these bonding orbitals and antibonding orbitals is not eliminated in the annihilation process. The apparatus of the present invention includes at least one input means, processing means, output device and means for generating a control specification.
REFERENCES:
P. W. Atkins, Physical Chemistry, Third Edition (1986).
MOPAC 93, Fujitsu Limited, First Edition, May 1993.
Fujitsu Ltd.
Ramirez Ellis B.
Stamber Eric W.
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