\documentclass[dvipdfmx]{beamer}
%\documentclass[dvipdfmx,trans]{beamer}  %only final slides

% japanese pdf-bookmark
%\AtBeginDvi{\special{pdf:tounicode EUC-UCS2}}
\AtBeginDvi{\special{pdf:tounicode 90ms-RKSJ-UCS2}}

\usetheme{JuanLesPins}
\usecolortheme{default}

\usefonttheme{professionalfonts}
\usefonttheme{serif}

\setbeamertemplate{navigation symbols}{} 
\mathversion{normal}
\renewcommand{\kanjifamilydefault}{\mcdefault}


%%%% Outlines for each section
% \AtBeginSection[]{ \begin{frame}<beamer>\frametitle{Outline}\tableofcontents[currentsection,hideothersubsections] \end{frame} } 


%%%%% END of Beamer setting
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\theoremstyle{plain}
\newtheorem{thm}{Theorem}[section]
%\newtheorem{lemma}[thm]{Lemma}
\newtheorem{cor}[thm]{Corollary}
%\newtheorem{theorem}[thm]{Theorem}
\newtheorem{proposition}[thm]{Propsition}
%\newtheorem{fact}[thm]{Fact}

\theoremstyle{remark}
\newtheorem{remark}[thm]{Remark}
\newtheorem{rem}[thm]{Remark}
%\newtheorem{example}[thm]{Example}

\theoremstyle{definition}
%\newtheorem{definition}[thm]{Definition}
\newtheorem{defprop}[thm]{Proposition and Definition}
\newtheorem{question}[thm]{Problem}
\newtheorem{conjecture}[thm]{Conjecture}




\begin{document}

\maketitle
\title{AAA}
\author{BBB}
\institute{CCC}
\date{DDD}

\section*{Outline} 
\begin{frame} \tableofcontents%[hideallsubsections] 
\end{frame} 

\section{Introduction}
\subsection{Abstract}
\begin{frame}
 \frametitle{Summary}
 Text
\end{frame}

\begin{frame}
\frametitle{Next slide}
\begin{itemize}
 \item A
 \item B     
\end{itemize}
\end{frame}


\section{Def}
\begin{frame}
\frametitle{Slide}
\begin{definition}
 abc
 def
 gh.
\end{definition}
\end{frame}



\end{document}