Search: MSC category 33D05 ( $q$-gamma functions, $q$-beta functions and integrals )
 On \lowercase{$q$}-exponential functions for \lowercase{$|q| =1$} We discuss the $q$-exponential functions $e_q$, $E_q$ for $q$ on the unit circle, especially their continuity in $q$, and analogues of the limit relation $\lim_{q\rightarrow 1}e_q((1-q)z)=e^z$. Keywords:$q$-series, $q$-exponentialsCategories:33D05, 11A55, 11K70