Kerodon

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

Definition 1.2.1.6. Let $S_{}$ be a simplicial set. We will say that $S_{}$ is connected if it is nonempty and every summand $S'_{} \subseteq S_{}$ is either empty or coincides with $S_{}$.