Funes el memorioso

\documentclass{beamer}
\usepackage{hyperref}
\setbeamertemplate{theorems}[numbered]
\usetheme{CambridgeUS}

\begin{document}
\begin{frame}
  \frametitle{Test}
  \begin{theorem}[Fermat's Last Theorem]
    $x^n + y^n = z^n$.
    \label{thm:fermat}
  \end{theorem}
  As shown in Theorem \ref{thm:fermat}...

  \begin{example}
    Here goes an example!
  \end{example}

  \begin{theorem}
    $e^{i\pi} + 1 = 0$
  \end{theorem}

  \begin{corollary}
    Corollary!
  \end{corollary}
\end{frame}

\end{document}