This is the first book to provide comprehensive treatment of the use of the symmetric group in quantum chemical structures of atoms, molecules, and solids. It begins with the conventional Slater determinant approach and proceeds to the basics of the symmetric group and the construction of spin eigenfunctions. The heart of the book is in the chapter dealing with spin-free quantum chemistry showing the great interpretation value of this method. The last three chapters include the unitary group approach, the symmetric group approach, and the spin-coupled valence bond method. An extensive bibliography concludes the book.

chapter 1|17 pages

The quantum mechanical background

chapter 2|11 pages

The symmetric group

chapter 3|36 pages

Representation of SN

chapter 4|28 pages

The symmetric group algebra

chapter 5|40 pages

Spin eigenfunctions

chapter 6|21 pages

Spatial functions

chapter 7|37 pages

Spin free quantum chemistry

chapter 8|57 pages

Unitary group approach

chapter 9|28 pages

Symmetric group approach in CI

chapter 10|14 pages

Spin-coupled functions