Ray class field
= Ray class field
{wiki}
The ray class field modulo $\mathfrak m$ is the maximal abelian extension whose Artin map factors through the ray class group; its degree is the ray class number.
= Ray class field
{wiki}
The ray class field modulo $\mathfrak m$ is the maximal abelian extension whose Artin map factors through the ray class group; its degree is the ray class number.