Moore-Osgood Theorem

Theorem
Let $X$ and $Y$ be metric spaces.

Let $S$ be a subspace of $X$.

Let $c$ be a limit point of $S$.

Let $\left \langle{f_n}\right \rangle$ be a sequence of  mappings $f_n : X \to Y$.

Suppose that $\left \langle{f_n}\right \rangle$ is uniformly convergent on $S$ (with respect to $n$).

Suppose that:
 * $ \displaystyle \forall n \in \N : \lim_{x \to c} f_n \left({ x }\right)$ exists.

Then:
 * $ \displaystyle \lim_{x \to c} \lim_{n \to \infty} f_n \left({ x }\right) = \lim_{n \to \infty} \lim_{x \to c} f_n \left({ x }\right)$