The real gaussian density function with parameter $(\mu, \sigma) \in \mathbb{R} \times (0, \infty)$ is the D4364: Real function \begin{equation} \mathbb{R} \to \mathbb{R}, \quad x \mapsto \frac{1}{\sqrt{2 \pi \sigma^2}} \exp \Bigg[ - \frac{1}{2} \Bigg( \frac{x - \mu}{\sigma} \Bigg)^2 \Bigg] \end{equation}