Group table for the character group for $\textrm{Gal}(K/\mathbb{Q})$

$K$ is the global number field defined by \(x^{2} \) \(\mathstrut -\mathstrut x \) \(\mathstrut -\mathstrut 5 \)

$\times$ \(\chi_{ 21 } ( 1, ·)\) \(\chi_{ 21 } ( 20, ·)\)
\(\chi_{ 21 }(1, ·)\) \(\chi_{ 21 } ( 1, ·)\) \(\chi_{ 21 } ( 20, ·)\)
\(\chi_{ 21 }(20, ·)\) \(\chi_{ 21 } ( 20, ·)\) \(\chi_{ 21 } ( 1, ·)\)