Titlebook: Density Matrices and Density Functionals; Proceedings of the A Robert Erdahl,Vadene H. Smith Conference proceedings 1987 D. Reidel Publishi

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Ian Miles,Howard Rush,John Bessant straightforward characterization of n-representable 1-matrices corresponding to a given density. It is thus also possible, for example, to determine the minimum kinetic energy that can be associated with a given density. The relationship between densities and density matrices depends on linear depe

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ber of the faculty at the University of Toronto and for 20 years, starting in 1960, he served as Dupuis Professor of Mathematics and Head of the Department at Queen‘s University. Since 1983 he has been Professor Emeritus at Queen‘s.978-94-010-8214-3978-94-009-3855-7

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Conference proceedings 1987y scientific accomplishments. John was born in Toronto on May 20, 1918 and 21 years later graduated from the University of Toronto in mathematics. Along the way he teamed up with Irving Kaplansky and Nathan Mendelson to win the first William Lowell Putnam Mathematical Competition in 1938. He earned

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Marcella Nicolini,Laura Resminie Approximation based on such states is derived by considering small amplitude oscillations in this phase space. This work generalizes the group theoretical approaches to Hartree-Fock and time dependent Hartree-Fock to correlated and non-number conserving states.

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Harry Waugh,Simon McIntosh-Smithmparison of these statistical von Neumann density operators with those obtained from specified perturbations allows discrimination between responses of the system which depend strongly upon the excitation mechanism and those which are characteristic of the system and only weakly dependent on the excitation mechanism.

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