Function legendre_symbols 

pub fn legendre_symbols<N, D>(numerator: N, denominator: D) -> MathFenced
where
    N: Into<MathML>,
    D: Into<MathML>,

Renders a matrix with vertical bars.

Input

legendre_symbols('a', 'b');

Output

$$({}_{}{}^{1}H_{}^{},{}_{}{}^{2}H_{}^{},{}_{}{}^{3}H_{}^{})$$