Properties

Label 64.43
Modulus $64$
Conductor $64$
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(64, base_ring=CyclotomicField(16))
 
M = H._module
 
chi = DirichletCharacter(H, M([8,13]))
 
pari: [g,chi] = znchar(Mod(43,64))
 

Basic properties

Modulus: \(64\)
Conductor: \(64\)
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 64.j

\(\chi_{64}(3,\cdot)\) \(\chi_{64}(11,\cdot)\) \(\chi_{64}(19,\cdot)\) \(\chi_{64}(27,\cdot)\) \(\chi_{64}(35,\cdot)\) \(\chi_{64}(43,\cdot)\) \(\chi_{64}(51,\cdot)\) \(\chi_{64}(59,\cdot)\)

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: 16.0.604462909807314587353088.1

Values on generators

\((63,5)\) → \((-1,e\left(\frac{13}{16}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(5\)\(7\)\(9\)\(11\)\(13\)\(15\)\(17\)\(19\)\(21\)
\( \chi_{ 64 }(43, a) \) \(-1\)\(1\)\(e\left(\frac{15}{16}\right)\)\(e\left(\frac{13}{16}\right)\)\(e\left(\frac{5}{8}\right)\)\(e\left(\frac{7}{8}\right)\)\(e\left(\frac{9}{16}\right)\)\(e\left(\frac{3}{16}\right)\)\(-i\)\(-i\)\(e\left(\frac{3}{16}\right)\)\(e\left(\frac{9}{16}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 64 }(43,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 64 }(43,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 64 }(43,·),\chi_{ 64 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 64 }(43,·)) \;\) at \(\; a,b = \) e.g. 1,2