Exercise 2.4.4.14. Use Theorem 2.4.4.10 to give a different proof of Proposition 2.4.4.7 (show that if $S_{\bullet }$ is a simplicial set of dimension $\leq 1$, then the sets $E(S,m)$ appearing in Notation 2.4.4.9 do not depend on $m$).
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$