Titlebook: Quantum Science Methods and Structure; A Tribute to Per-Olo Jean-Louis Calais,Osvaldo Goscinski,Yngve Öhrn Book 1976 Springer Science+Busin

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Jean-Louis Calais,Osvaldo Goscinski,Jan Linderberg,Yngve Öhrn

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Tremor

,Per-Olov Löwdin in the Scientific Literature 1965–1974,potheses discussed, etc. Science Citation Index. provides a yearly compilation of the references in the majority of the scientific journals of the world. In fields like chemistry and physics with established bibliographical procedures and age-old traditions of international dissemination of scientif

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,Acta Vålådalensia Revisited: Per-Olov Löwdin in Scientific Discussion,tructuralist he very soon goes beyond a specific problem towards the conceptual borderlines. Quantum Science as a whole is his problem — this justifies the title of this book. In order to illustrate this eagerness to draw a map of the mountain range at the same time as climbing a top we include a pa

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The Non-Orthogonality Problem and Orthogonalization Procedures,cules to more quantitative methods. Indeed, the very beginning of quantum chemistry was marked by the contradiction between considerations associating the strengths of the chemical bonds to the overlaps between atomic orbitals /1–4/ and treatments where the atomic orbitals were assumed to be orthogo

Memorial

Biorthonormal Bases in Hilbert Space,ools and physical intuition. Like orthonormalisation, biorthonormalisation is a problem of both mathematical and physical importance. Covariant and contravariant representations, direct and reciprocal lattices, secular equations for non-orthogonal basis sets are just a few topics intimately related

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Instinctive

,The Calculation of the Exchange Parameter J = ½(Esinglet−Etriplet) for Two Equivalent Electrons Usital configurations that represent singlet (S = 0) and triplet (S = 1) spin states. The simplest cases to consider involve two singly occupied orbitals for the triplet state. In theories of ferro- and antiferromagnetism, these orbitals are sometimes referred to as the magnetic orbitals (1).