Example 3.6.6.2. For every topological space $X$, the projection map $X \rightarrow \{ \ast \} $ is a Serre fibration.
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$
Example 3.6.6.2. For every topological space $X$, the projection map $X \rightarrow \{ \ast \} $ is a Serre fibration.