Kerodon

$\Newextarrow{\xRightarrow}{5,5}{0x21D2}$ $\newcommand\empty{}$
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$

Remark 1.2.5.6. Let $\operatorname{\mathcal{C}}$ be a category. Then the counit of the adjunction described in Corollary 1.2.5.5 induces an isomorphism of categories $\mathrm{h} \mathit{\operatorname{N}}_{\bullet }(\operatorname{\mathcal{C}}) \xrightarrow {\sim } \operatorname{\mathcal{C}}$ (this is a restatement of Proposition 1.2.2.1). In other words, every category $\operatorname{\mathcal{C}}$ can be recovered as the homotopy category of its nerve $\operatorname{N}_{\bullet }(\operatorname{\mathcal{C}})$.