# Presentation using beamer

Using beamer I have prepared the following slide. I want to display the theorem in a box or like that for better presentation. Also title heading is left align. Is it ok or not?

\begin{frame}{Chinese Remainder Theorem(CRT)}

\begin{theorem}

Let $r, s$ be integers such that gcd$(r, s)=1$.
Given integers $a,b$, there exists unique
$x <rs$ such that

\vspace*{5pt}
\begin{enumerate}
\item $x \equiv a \bmod r$
\item $x \equiv b \bmod s$
\end{enumerate}

\end{theorem}

\end{frame}

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Welcome to TeX.sx! A tip: If you indent lines by 4 spaces, they'll be marked as a code sample. You can also highlight the code and click the "code" button (with {} on it). –  Werner Feb 9 '12 at 17:30
You could use the block-environment for the box. But the outcome does strongly depend on your chosen beamertheme. Without any there is no box with block –  Matz Feb 9 '12 at 17:36
You really should consider changing your subject. It is not specific enough and won't draw attention of those who may be able to help you. –  Marc van Dongen Feb 12 '12 at 0:19

Do you mean something like this?

\documentclass{beamer}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\author{Yourself}
\date{today}

\begin{document}
\begin{frame}[shrink=-50]{A theorem in a box}

\begin{theorem}

Let $r, s$ be integers such that gcd$(r, s)=1$.
Given integers $a,b$, there exists unique
$x <rs$ such that

\begin{enumerate}
\item <+-> Wait to the next slide ...
\item <+-> $x \equiv a \bmod r$
\item <+-> $x \equiv b \bmod s$
\end{enumerate}

\end{theorem}
\end{frame}
\end{document}


Well, without theme and without theorem environment, you can use, for example, fancybox and minipage:

\documentclass{beamer}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage{fancybox}
\author{Yourself}
\date{today}
\begin{document}
\begin{frame}[shrink=-50]{A theorem in a box}

Let $r, s$ be integers such that gcd$(r, s)=1$.
Given integers $a,b$, there exists unique
$x <rs$ such that

\Ovalbox{\begin{minipage}[t]{0.5\columnwidth}%

\begin{enumerate}
\item <+-> Wait to the next slide ...
\item <+-> $x \equiv a \bmod r$
\item <+-> $x \equiv b \bmod s$
\end{enumerate}

\end{minipage}}
\end{frame}
\end{document}

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Thanks. But I do not want to use any kind of theme. –  user12290 Feb 10 '12 at 15:00