\documentclass{amsart}

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\input{\pathtotrunk text/article_preamble.tex}

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\begin{document}
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module composition

action

$n$-category composition

\newcommand{\cN}{\mathcal{N}}
$N_0 N_1 N_2 N_3 M_0 M_1 M_2 M_3 I$

$R_0 R_4$

$n-\abs{\Gamma}$ edges

$v$
$\Gamma$

\begin{align*}
abmab & \\
v_1 v_2 v_3 v_4 A
\end{align*}

$E_0 M_0 N_0 M_1 N_1 M_2 N_2 R_1 R_2 C(f_0) C(f_1) C(f_2)$
\end{document}