Properties

Conductor 87
Order 4
Real No
Primitive Yes
Parity Even
Orbit Label 87.f

Related objects

Learn more about

Show commands for: SageMath / Pari/GP
sage: from dirichlet_conrey import DirichletGroup_conrey # requires nonstandard Sage package to be installed
sage: H = DirichletGroup_conrey(87)
sage: chi = H[17]
pari: [g,chi] = znchar(Mod(17,87))

Basic properties

sage: chi.conductor()
pari: znconreyconductor(g,chi)
Conductor = 87
sage: chi.multiplicative_order()
pari: charorder(g,chi)
Order = 4
Real = No
sage: chi.is_primitive()
pari: #znconreyconductor(g,chi)==1 \\ if not primitive returns [cond,factorization]
Primitive = Yes
sage: chi.is_odd()
pari: zncharisodd(g,chi)
Parity = Even
Orbit label = 87.f
Orbit index = 6

Galois orbit

sage: chi.sage_character().galois_orbit()
pari: order = charorder(g,chi)
pari: [ charpow(g,chi, k % order) | k <-[1..order-1], gcd(k,order)==1 ]

\(\chi_{87}(17,\cdot)\) \(\chi_{87}(41,\cdot)\)

Values on generators

\((59,31)\) → \((-1,-i)\)

Values

-11245781011131416
\(1\)\(1\)\(i\)\(-1\)\(1\)\(1\)\(-i\)\(i\)\(i\)\(-1\)\(i\)\(1\)
value at  e.g. 2

Related number fields

Field of values \(\Q(i)\)

Gauss sum

sage: chi.sage_character().gauss_sum(a)
pari: znchargauss(g,chi,a)
\( \tau_{ a }( \chi_{ 87 }(17,·) )\;\) at \(\;a = \) e.g. 2
\(\displaystyle \tau_{2}(\chi_{87}(17,\cdot)) = \sum_{r\in \Z/87\Z} \chi_{87}(17,r) e\left(\frac{2r}{87}\right) = 9.1590794326+-1.7638775316i \)

Jacobi sum

sage: chi.sage_character().jacobi_sum(n)
\( J(\chi_{ 87 }(17,·),\chi_{ 87 }(n,·)) \;\) for \( \; n = \) e.g. 1
\( \displaystyle J(\chi_{87}(17,\cdot),\chi_{87}(1,\cdot)) = \sum_{r\in \Z/87\Z} \chi_{87}(17,r) \chi_{87}(1,1-r) = 1 \)

Kloosterman sum

sage: chi.sage_character().kloosterman_sum(a,b)
\(K(a,b,\chi_{ 87 }(17,·)) \;\) at \(\; a,b = \) e.g. 1,2
\( \displaystyle K(1,2,\chi_{87}(17,·)) = \sum_{r \in \Z/87\Z} \chi_{87}(17,r) e\left(\frac{1 r + 2 r^{-1}}{87}\right) = 0.0 \)