$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$
3.45
\begin{equation} \begin{gathered}\label{equation:path-space-counterexample} \xymatrix@R =50pt@C=50pt{ \Omega X \ar [r]^-{\iota } \ar [d] & P \ar [d]^{\operatorname{ev}_0} \\ \{ x\} \ar [r] & X, } \end{gathered} \end{equation}