Symbols:Q/Non-Negative Rational Numbers

Rational Numbers

 * $\Q_{\ge 0}$

The set of non-negative rational numbers:
 * $\Q_{\ge 0} = \set {x \in \Q: x \ge 0}$

Variants

 * $\Q_+$

The set of non-negative rational numbers:
 * $\Q_+ = \set {x \in \Q: x \ge 0}$