Bounded Below Subset of Real Numbers/Examples/Finite Set of Reals

Example of Bounded Below Subset of Real Numbers
Let $I$ be the set defined as:
 * $I := \set {-1, 0, 2, 5}$

Then $I$ is bounded below by, for example, $-1$, $-2$ and $3$, of which the infimum is $-1$.

$5$ is also the smallest element of $I$.