# Properties

 Modulus 63 Conductor 63 Order 6 Real no Primitive yes Minimal yes Parity even Orbit label 63.o

# Related objects

Show commands for: Pari/GP / SageMath
sage: from sage.modular.dirichlet import DirichletCharacter

sage: H = DirichletGroup(63)

sage: M = H._module

sage: chi = DirichletCharacter(H, M([1,3]))

pari: [g,chi] = znchar(Mod(20,63))

## Basic properties

 sage: chi.conductor()  pari: znconreyconductor(g,chi) Modulus = 63 Conductor = 63 sage: chi.multiplicative_order()  pari: charorder(g,chi) Order = 6 Real = no sage: chi.is_primitive()  pari: #znconreyconductor(g,chi)==1 \\ if not primitive returns [cond,factorization] Primitive = yes Minimal = yes sage: chi.is_odd()  pari: zncharisodd(g,chi) Parity = even Orbit label = 63.o Orbit index = 15

## Galois orbit

sage: chi.galois_orbit()

pari: order = charorder(g,chi)

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

## Values on generators

$$(29,10)$$ → $$(e\left(\frac{1}{6}\right),-1)$$

## Values

 -1 1 2 4 5 8 10 11 13 16 17 19 $$1$$ $$1$$ $$e\left(\frac{1}{6}\right)$$ $$e\left(\frac{1}{3}\right)$$ $$e\left(\frac{1}{3}\right)$$ $$-1$$ $$-1$$ $$e\left(\frac{1}{6}\right)$$ $$e\left(\frac{5}{6}\right)$$ $$e\left(\frac{2}{3}\right)$$ $$1$$ $$-1$$
value at  e.g. 2

## Related number fields

 Field of values $$\Q(\zeta_{3})$$

## Gauss sum

sage: chi.gauss_sum(a)

pari: znchargauss(g,chi,a)

$$\tau_{ a }( \chi_{ 63 }(20,·) )\;$$ at $$\;a =$$ e.g. 2
$$\displaystyle \tau_{2}(\chi_{63}(20,\cdot)) = \sum_{r\in \Z/63\Z} \chi_{63}(20,r) e\left(\frac{2r}{63}\right) = 5.1019684832+6.0802892691i$$

## Jacobi sum

sage: chi.jacobi_sum(n)

$$J(\chi_{ 63 }(20,·),\chi_{ 63 }(n,·)) \;$$ for $$\; n =$$ e.g. 1
$$\displaystyle J(\chi_{63}(20,\cdot),\chi_{63}(1,\cdot)) = \sum_{r\in \Z/63\Z} \chi_{63}(20,r) \chi_{63}(1,1-r) = 0$$

## Kloosterman sum

sage: chi.kloosterman_sum(a,b)

$$K(a,b,\chi_{ 63 }(20,·)) \;$$ at $$\; a,b =$$ e.g. 1,2
$$\displaystyle K(1,2,\chi_{63}(20,·)) = \sum_{r \in \Z/63\Z} \chi_{63}(20,r) e\left(\frac{1 r + 2 r^{-1}}{63}\right) = 12.3862741079+7.1512186904i$$