Example 10.2.3.19. Let $X = X_{\bullet }$ be a simplicial set. For every integer $n$, the inclusion of simplicial sets $\operatorname{sk}_{n}(X) \hookrightarrow X$ exhibits $\operatorname{sk}_{n}(X)$ as an $n$-skeleton of $X$, in the sense of Definition 10.2.3.18: see Proposition 1.1.4.6.
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$