# Kerodon

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

Corollary 7.2.1.10. Let $f: A \twoheadrightarrow B$ be a universally localizing morphism of simplicial sets (see Definition 6.3.6.1). Then $f$ is both left and right cofinal.