\documentclass[aspectratio=43]{beamer}
\usepackage[english]{babel}
\input{chapters/preamble}
\title{My Presentation} %->->->->-> Check hyperref title <-<-<-<-<-
\subtitle{And Some Things About It}
\author[J. Doe]{John Doe}
\institute[IFUSP]{
Institute of Physics%
\\%
University of São Paulo%
} %You can change the Institution if you are from somewhere else
\date{February 31, 2019}
%\logo{\includegraphics[width= 0.2\textwidth]{images/a-logo.png}}
\begin{document}
\frame{\titlepage}
\begin{frame}{Summary}
\tableofcontents
\end{frame}
\input{chapters/a-silly-idea.tex} %You can put the frames directly into the presentation, but using the input command and writing them in separate .tex files might be more organized
\input{chapters/playing-around.tex}
\input{chapters/fourier-playground.tex}
\section*{Acknowledgments} %You can remove this if you do not want to use it
\begin{frame}{Acknowledgments}
The author is extremely thankful to Prof. Antônio F. R. T. Piza for the short, yet wonderful, conversations about this seminar.
\end{frame}
\section*{References} %You can remove this if you do not want to use it
\nocite{Djairo} \nocite{PhilPanof} \nocite{Fleming} \nocite{Shankar}
\begin{frame}{References}
\printbibliography
\end{frame}
\section{}
\begin{frame}{}
\centering
\Huge\bfseries
\textcolor{orange}{The End}
\end{frame}
\end{document}