sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(1980, base_ring=CyclotomicField(10))
M = H._module
chi = DirichletCharacter(H, M([0,0,0,2]))
pari:[g,chi] = znchar(Mod(1621,1980))
\(\chi_{1980}(181,\cdot)\)
\(\chi_{1980}(361,\cdot)\)
\(\chi_{1980}(1081,\cdot)\)
\(\chi_{1980}(1621,\cdot)\)
sage:chi.galois_orbit()
pari:order = charorder(g,chi)
[ charpow(g,chi, k % order) | k <-[1..order-1], gcd(k,order)==1 ]
\((991,1541,397,541)\) → \((1,1,1,e\left(\frac{1}{5}\right))\)
\(a\) |
\(-1\) | \(1\) | \(7\) | \(13\) | \(17\) | \(19\) | \(23\) | \(29\) | \(31\) | \(37\) | \(41\) | \(43\) |
\( \chi_{ 1980 }(1621, a) \) |
\(1\) | \(1\) | \(e\left(\frac{2}{5}\right)\) | \(e\left(\frac{1}{5}\right)\) | \(e\left(\frac{4}{5}\right)\) | \(e\left(\frac{3}{5}\right)\) | \(1\) | \(e\left(\frac{2}{5}\right)\) | \(e\left(\frac{1}{5}\right)\) | \(e\left(\frac{2}{5}\right)\) | \(e\left(\frac{3}{5}\right)\) | \(1\) |
sage:chi.jacobi_sum(n)