$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$
5.34
\begin{equation} \begin{gathered}\label{equation:cocartesian-in-oriented-fiber-product-ultimate} \xymatrix@R =50pt@C=50pt{ \Lambda ^{n}_{0} \ar [r]^-{ \sigma _0 } \ar [r] \ar [d] & \operatorname{Fun}( \Delta ^1, \operatorname{\mathcal{C}}) \ar [d]^-{ V } \\ \Delta ^{n} \ar [r]^-{ \overline{\sigma } } \ar@ {-->}[ur]^{\sigma } & \operatorname{\mathcal{C}}\operatorname{\vec{\times }}_{\operatorname{\mathcal{D}}} \operatorname{\mathcal{C}}} \end{gathered} \end{equation}