Corollary 7.2.1.11. 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.
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$
Corollary 7.2.1.11. 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.