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Corollary 5.3.5.11. Let $\operatorname{\mathcal{C}}$ be a category, let $U: \operatorname{\mathcal{E}}\rightarrow \operatorname{N}_{\bullet }(\operatorname{\mathcal{C}})$ be a cocartesian fibration of $\infty $-categories, and let $U': \operatorname{\mathcal{E}}' \rightarrow \operatorname{N}_{\bullet }(\operatorname{\mathcal{C}})$ be an isofibration of $\infty $-categories. Then the composite map

\begin{eqnarray*} \operatorname{Fun}_{ / \operatorname{N}_{\bullet }(\operatorname{\mathcal{C}}) }( \operatorname{\mathcal{E}}, \operatorname{\mathcal{E}}' ) & \xrightarrow {\theta } & \operatorname{Hom}_{ \operatorname{Fun}( \operatorname{\mathcal{C}}, \operatorname{Set_{\Delta }}) }( \operatorname{wTr}_{\operatorname{\mathcal{E}}/\operatorname{\mathcal{C}}}, \operatorname{wTr}_{\operatorname{\mathcal{E}}'/\operatorname{\mathcal{C}}} )_{\bullet } \\ & \rightarrow & \operatorname{Hom}_{ \operatorname{Fun}( \operatorname{\mathcal{C}}, \operatorname{Set_{\Delta }}) }( \operatorname{sTr}_{\operatorname{\mathcal{E}}/\operatorname{\mathcal{C}}}, \operatorname{wTr}_{\operatorname{\mathcal{E}}'/\operatorname{\mathcal{C}}} )_{\bullet } \end{eqnarray*}

is an equivalence of $\infty $-categories.

Proof. Using Corollary 5.3.2.23, we can identify $\theta $ with the functor

\[ \operatorname{Fun}_{ / \operatorname{N}_{\bullet }(\operatorname{\mathcal{C}}) }( \operatorname{\mathcal{E}}, \operatorname{\mathcal{E}}' ) \rightarrow \operatorname{Fun}_{ / \operatorname{N}_{\bullet }(\operatorname{\mathcal{C}}) }( \underset { \longrightarrow }{\mathrm{holim}}( \operatorname{sTr}_{\operatorname{\mathcal{E}}/\operatorname{\mathcal{C}}}), \operatorname{\mathcal{E}}' ) \]

given by precomposition with the universal scaffold $\lambda _{u}$. The desired result now follows by combining Corollaries 5.3.5.8 and 4.5.2.34. $\square$