\documentclass{amsart}

\newcommand{\pathtotrunk}{../../}
\input{\pathtotrunk text/article_preamble.tex}

\pagestyle{empty}

\begin{document}
\thispagestyle{empty}

\begin{align*}
c_1 \tensor c_2 1 \tensor 1 *
\end{align*}
\end{document}