Symbols:Q/Non-Zero Rational Numbers

Rational Numbers

 * $\Q_{\ne 0}$

The set of non-zero rational numbers:
 * $\Q_{\ne 0} = \Q \setminus \left\{{0}\right\}$

Variants

 * $\Q^*$

The set of non-zero rational numbers:
 * $\Q^* = \Q \setminus \set 0$