Conductor of a Dirichlet character
= Conductor of a Dirichlet character
{title2=$q_\chi$}
The least divisor of a character's modulus through whose unit-group reduction the <Dirichlet character> factors. The <Chinese remainder theorem> reduces its construction to choosing the least exponent at each <prime>. Surjectivity of reduction on units makes the descended <primitive Dirichlet character> unique.