Remark 9.2.5.13 (Composition). Let $F: \operatorname{\mathcal{C}}\rightarrow \operatorname{\mathcal{D}}$ and $G: \operatorname{\mathcal{D}}\rightarrow \operatorname{\mathcal{E}}$ be functors of $\infty $-categories and let $\kappa $ be a regular cardinal. If $F$ and $G$ are $\kappa $-left exact, then the composition $(G \circ F): \operatorname{\mathcal{C}}\rightarrow \operatorname{\mathcal{E}}$ is also $\kappa $-left exact.
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$