The contraction of $S{U}_{\mu }(2)$ and its differential structures to $E_{\kappa }(2)$

P. Kosiński, P. Maślanka

The deformed double covering of E(2) group, denoted by ${\tilde{E}}_{\kappa }(2)$, is obtained by contraction from the $S{U}_{\mu }(2)$. The contraction procedure is then used for producing a new e…