Even Dirichlet character
= Even Dirichlet character
{title2=$\chi(-1)=1$}
A <Dirichlet character> with even parity satisfies $\chi(-n)=\chi(n)$, so its extension to <integer> arguments is an <even function>.
= Even Dirichlet character
{title2=$\chi(-1)=1$}
A <Dirichlet character> with even parity satisfies $\chi(-n)=\chi(n)$, so its extension to <integer> arguments is an <even function>.