\documentclass[14pt]{beamer} \definecolor{todocolor}{rgb}{1, 0.3, 0.2} \newcommand{\td}[1]{\colorbox{todocolor}{*\footnote{TODO: #1}}} \input{preamble} \usepackage{tabularx} \renewcommand{\tabularxcolumn}[1]{p{#1}} \newcommand{\Frame}[2]{ \begin{frame}{#1}#2\end{frame} } \title{Rational Homotopy Theory} \author{Joshua Moerman} \institute[Radboud Universiteit Nijmegen]{Supervisor: Ieke Moerdijk} \date{} \begin{document} \Frame{}{ \[ 1 \times \] \[ 2 \times \] \[ 3 \times \] \[ 4 \times \] } \end{document}