Properties

Label 448.181
Modulus $448$
Conductor $448$
Order $16$
Real no
Primitive yes
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(448, base_ring=CyclotomicField(16))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,5,8]))
 
pari: [g,chi] = znchar(Mod(181,448))
 

Basic properties

Modulus: \(448\)
Conductor: \(448\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(16\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: yes
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 448.bf

\(\chi_{448}(13,\cdot)\) \(\chi_{448}(69,\cdot)\) \(\chi_{448}(125,\cdot)\) \(\chi_{448}(181,\cdot)\) \(\chi_{448}(237,\cdot)\) \(\chi_{448}(293,\cdot)\) \(\chi_{448}(349,\cdot)\) \(\chi_{448}(405,\cdot)\)

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

Related number fields

Field of values: \(\Q(\zeta_{16})\)
Fixed field: 16.0.3484608386920116940487669055488.4

Values on generators

\((127,197,129)\) → \((1,e\left(\frac{5}{16}\right),-1)\)

First values

\(a\) \(-1\)\(1\)\(3\)\(5\)\(9\)\(11\)\(13\)\(15\)\(17\)\(19\)\(23\)\(25\)
\( \chi_{ 448 }(181, a) \) \(-1\)\(1\)\(e\left(\frac{7}{16}\right)\)\(e\left(\frac{13}{16}\right)\)\(e\left(\frac{7}{8}\right)\)\(e\left(\frac{9}{16}\right)\)\(e\left(\frac{3}{16}\right)\)\(i\)\(i\)\(e\left(\frac{11}{16}\right)\)\(e\left(\frac{3}{8}\right)\)\(e\left(\frac{5}{8}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 448 }(181,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 448 }(181,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 448 }(181,·),\chi_{ 448 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 448 }(181,·)) \;\) at \(\; a,b = \) e.g. 1,2