Let $T_1, \ldots, T_N \in \text{Exponential}(\theta)$ each be an D214: Exponential random positive real number such that

(i)	$T_1, \ldots, T_N$ is an D3842: Uncorrelated random collection

Then \begin{equation} \sum_{n = 1}^N T_n \overset{d}{=} \text{Gamma}(N, \theta) \end{equation}