$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$
5.37
\begin{equation} \begin{gathered}\label{equation:interior-fibration-morphism-space} \xymatrix@R =50pt@C=50pt{ \Lambda ^{n}_{i} \ar [r]^-{\sigma _0} \ar [d] & \operatorname{Hom}_{\operatorname{\mathcal{C}}}^{\mathrm{R}}(X,Y) \ar [d] \\ \Delta ^{n} \ar [r]^-{\overline{\sigma }} \ar@ {-->}[ur]^{\sigma } & \operatorname{Hom}_{\operatorname{\mathcal{D}}}^{\mathrm{R}}( F(X), F(Y) ) } \end{gathered} \end{equation}