Class number
= Class number
{title2=$h_K$}
{wiki}
The class number of a number field is the order $h_K=|\operatorname{Cl}(K)|$ of its <ideal class group>.
= Class number
{title2=$h_K$}
{wiki}
The class number of a number field is the order $h_K=|\operatorname{Cl}(K)|$ of its <ideal class group>.