Giulio Racah

Theory of Complex Spectra. III

The consideration of the phases of the fractional-parentage coefficients allows the extension of the matrix methods to configurations with more than two equivalent electrons. Ta...

Theory of Complex Spectra. IV

The calculation of the coefficients of fractional parentage and of the energy matrices for the configurations ${f}^{n}$ is simplified very much by the use of the theory of group...

Irreducible tensorial sets