Symbols:C/Non-Zero Complex Numbers

Complex Numbers

 * $\C_{\ne 0}$

The set of non-zero complex numbers:
 * $\C_{\ne 0} = \C \setminus \set 0$

Also denoted as

 * $\C^*$

The set of non-zero complex numbers:
 * $\C^* = \C \setminus \set 0$