Journal of Physics A: Mathematical and General. 39:343-349
ISSN:
1361-6447 0305-4470
DOI:
10.1088/0305-4470/39/2/005
Popis:
It is shown that the symmetry algebra of quantum superintegrable system can be always chosen to be u(N),N being the number of degrees of freedom. Comment: 8 pages, no figures, a number of examples and references added