Representations of the symmetric group generated by projected spin functions: A graphical approach
Sten Rettrup, Ruben Pauncz · International Journal of Quantum Chemistry · 1996
The representation matrices generated by the projected spin functions have some very interesting properties. All the matrix elements are integers and they are quite sparse. A very efficient algorithm is presented for the calculation of these representation matrices based on a graphical approach and a new indexing scheme for representation of primitive spin functions is introduced. Test calculations show that the method is very fast and suited for calculations on vector computers. © 1996 John Wiley & Sons, Inc.