Kerodon

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

Warning 4.7.3.23. The existence of uncountable strongly inaccessible cardinals cannot be proven from the axioms of Zermelo-Fraenkel set theory (assuming those axioms are consistent).