HS

U_{3}(5).2  176  1a + 175a  2

Character Numbers: [ 1, 7 ]

U_{3}(5).2  176  1a + 175a  2

Character Numbers: [ 1, 7 ]

\begin{aligned}& S_{1} & S_{2} \\ χ_{1} & 1 & 175 \\ χ_{2} & 1 & −1 \end{aligned}

Ramanujan Graphs: [ 2 ]