Example 4.6.9.3. Let $\operatorname{\mathcal{C}}$ be a simplicial set and let $X_0$ be a vertex of $\operatorname{\mathcal{C}}$. Then the simplicial set $\operatorname{Hom}_{\operatorname{\mathcal{C}}}(X_0)$ of Notation 4.6.9.1 is isomorphic to $\Delta ^0$.
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$