𝔖 Bobbio Scriptorium
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Symmetry property of Löwdin's “alpha” function

✍ Scribed by M. H. De A. Viccaro


Book ID
104578908
Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
85 KB
Volume
10
Category
Article
ISSN
0020-7608

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📜 SIMILAR VOLUMES


Analytic Löwdin alpha-function method fo
✍ Herbert W. Jones 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 410 KB

Using the Lowdin alpha-function method in which displaced orbitals are expanded in spherical harmonics, two-center, two-electron repulsion integrals of the Coulomb, hybrid, and exchange type are done analytically using Slater-type orbitals. Computer algebra and integer arithmetic are used to obtain

A study of Löwdin's criterion for comple
✍ J. G. Leopold; M. Cohen; J. Katriel 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 278 KB

## Abstract Löwdin has formulated a useful criterion for testing the completeness of an expansion basis set. From this criterion one may obtain an __incompleteness coefficient__ for a truncated (finite) basis set. We have investigated the significance of this incompleteness coefficient for some of

Method of recurrent construction of Löwd
✍ A. I. Panin 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 764 KB

## Abstract Addition and subtraction operators defined on some subspaces of the full CI space are introduced. It is shown that the effect of these operators on Löwdin many‐electron wave functions consists in adding or removing an electron without destroying spin symmetry. Upward and downward recurr