Dirac operators on quantum $SU(2)$ group and quantum sphere
  Definition of Dirac operators on the quantum group $SU_{q}(2)$ and the quantum sphere $S^{2}_{q \mu}$ are discussed. In both cases similar $SU_{q}(2)$-invariant form is obtained. It is connected with corresponding Laplace operators. 
P.N. Bibikov, P.P. Kulish