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\title{\LARGE{\textbf{ Laboratoire d'Électrotechnique et d'Électronique de Puissance de Lille }}}
\date[ISPN ’80]{2023}
\author[Euclid]{author1, author2, author3, author4}
\begin{document}
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    \titlepage
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\section{section1}
\begin{frame} 
\frametitle{Frame title 1} 
\framesubtitle{L2EP 2023} 
\begin{theorem}
    There is no largest prime number. 
\end{theorem} 
\begin{enumerate} 
    \item<1-| alert@1> Suppose $p$ were the largest prime number. 
    \item<2-> Let $q$ be the product of the first $p$ numbers. 
    \item<3-> Then $q+1$ is not divisible by any of them. 
    \item<1-> But $q + 1$ is greater than $1$, thus divisible by some prime number not in the first $p$ numbers.
\end{enumerate}
\end{frame}
\section{section2}
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\frametitle{Frame title 2}
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\begin{itemize}
    \item one
    \item two
\end{itemize}
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\section{section3}
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\frametitle{Conclusion} 
\cite{JA,GB,Steinmetz}
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\printbibliography
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