# Kerodon

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

Remark 1.1.8.20. Passage from a simplicial set $S_{\bullet }$ to the category of simplices $\operatorname{{\bf \Delta }}_{S}$ is a special case of the category of elements construction (see Variant 5.2.6.2), which we will return to in §5.2.6.