Dirichlet character
= Dirichlet character
{wiki}
A Dirichlet character modulo $m$ is a homomorphism $(\mathbb Z/m\mathbb Z)^\times\to\mathbb C^\times$, extended periodically to integers by zero on numbers not coprime to $m$.
= Dirichlet character
{wiki}
A Dirichlet character modulo $m$ is a homomorphism $(\mathbb Z/m\mathbb Z)^\times\to\mathbb C^\times$, extended periodically to integers by zero on numbers not coprime to $m$.