Eugene Wigner is one of the few giants of 20th-century physics. The
present first volume of his collected works begins with a short
biographical sketch followed by papers on group theory, an extremely
powerful tool he created for theoretical quantum physics. They are
presented in two parts. The first covers applications to atomic and
molecular spectra, term structure, time reversal, and spin. The second
includes the mathematical papers, among them the famous paper on the
Lorentz group.