\begin{definition}[Definition:Bounded Below Set/Real Numbers/Unbounded]
Let $\R$ be the set of real numbers.
Let $T \subseteq \R$ be a subset of $\R$ .
$T \subseteq \R$ is '''unbounded below (in $\R$)''' {{iff}} it is not bounded below.
Category:Definitions/Boundedness
\end{definition}