Kerodon

$\Newextarrow{\xRightarrow}{5,5}{0x21D2}$ $\newcommand\empty{}$
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$

Example 3.5.1.16. For $n < 0$, every morphism of simplicial sets $f: X \rightarrow Y$ is $n$-connective.