Properties

Label 768.61
Modulus $768$
Conductor $256$
Order $64$
Real no
Primitive no
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(768, base_ring=CyclotomicField(64))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,19,0]))
 
pari: [g,chi] = znchar(Mod(61,768))
 

Basic properties

Modulus: \(768\)
Conductor: \(256\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(64\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{256}(61,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 768.z

\(\chi_{768}(13,\cdot)\) \(\chi_{768}(37,\cdot)\) \(\chi_{768}(61,\cdot)\) \(\chi_{768}(85,\cdot)\) \(\chi_{768}(109,\cdot)\) \(\chi_{768}(133,\cdot)\) \(\chi_{768}(157,\cdot)\) \(\chi_{768}(181,\cdot)\) \(\chi_{768}(205,\cdot)\) \(\chi_{768}(229,\cdot)\) \(\chi_{768}(253,\cdot)\) \(\chi_{768}(277,\cdot)\) \(\chi_{768}(301,\cdot)\) \(\chi_{768}(325,\cdot)\) \(\chi_{768}(349,\cdot)\) \(\chi_{768}(373,\cdot)\) \(\chi_{768}(397,\cdot)\) \(\chi_{768}(421,\cdot)\) \(\chi_{768}(445,\cdot)\) \(\chi_{768}(469,\cdot)\) \(\chi_{768}(493,\cdot)\) \(\chi_{768}(517,\cdot)\) \(\chi_{768}(541,\cdot)\) \(\chi_{768}(565,\cdot)\) \(\chi_{768}(589,\cdot)\) \(\chi_{768}(613,\cdot)\) \(\chi_{768}(637,\cdot)\) \(\chi_{768}(661,\cdot)\) \(\chi_{768}(685,\cdot)\) \(\chi_{768}(709,\cdot)\) ...

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: $\Q(\zeta_{64})$
Fixed field: Number field defined by a degree 64 polynomial

Values on generators

\((511,517,257)\) → \((1,e\left(\frac{19}{64}\right),1)\)

First values

\(a\) \(-1\)\(1\)\(5\)\(7\)\(11\)\(13\)\(17\)\(19\)\(23\)\(25\)\(29\)\(31\)
\( \chi_{ 768 }(61, a) \) \(1\)\(1\)\(e\left(\frac{19}{64}\right)\)\(e\left(\frac{31}{32}\right)\)\(e\left(\frac{15}{64}\right)\)\(e\left(\frac{61}{64}\right)\)\(e\left(\frac{5}{16}\right)\)\(e\left(\frac{53}{64}\right)\)\(e\left(\frac{5}{32}\right)\)\(e\left(\frac{19}{32}\right)\)\(e\left(\frac{33}{64}\right)\)\(e\left(\frac{3}{8}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 768 }(61,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 768 }(61,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 768 }(61,·),\chi_{ 768 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 768 }(61,·)) \;\) at \(\; a,b = \) e.g. 1,2