\begin{definition}[Definition:Integrable Random Variable]
Let $\struct {\Omega, \Sigma, \Pr}$ be a probability space. 
Let $X$ be a real-valued random variable on $\struct {\Omega, \Sigma, \Pr}$.
We say that $X$ is '''integrable''' if $X$ is $\Pr$-integrable. 
Category:Definitions/Random Variables
\end{definition}