Properties

Label 3920.1977
Modulus $3920$
Conductor $1960$
Order $84$
Real no
Primitive no
Minimal no
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(3920, base_ring=CyclotomicField(84))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,42,21,50]))
 
pari: [g,chi] = znchar(Mod(1977,3920))
 

Basic properties

Modulus: \(3920\)
Conductor: \(1960\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(84\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{1960}(997,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: no
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 3920.fm

\(\chi_{3920}(73,\cdot)\) \(\chi_{3920}(297,\cdot)\) \(\chi_{3920}(537,\cdot)\) \(\chi_{3920}(633,\cdot)\) \(\chi_{3920}(857,\cdot)\) \(\chi_{3920}(873,\cdot)\) \(\chi_{3920}(1193,\cdot)\) \(\chi_{3920}(1417,\cdot)\) \(\chi_{3920}(1433,\cdot)\) \(\chi_{3920}(1657,\cdot)\) \(\chi_{3920}(1753,\cdot)\) \(\chi_{3920}(1977,\cdot)\) \(\chi_{3920}(1993,\cdot)\) \(\chi_{3920}(2217,\cdot)\) \(\chi_{3920}(2313,\cdot)\) \(\chi_{3920}(2537,\cdot)\) \(\chi_{3920}(2553,\cdot)\) \(\chi_{3920}(2777,\cdot)\) \(\chi_{3920}(3097,\cdot)\) \(\chi_{3920}(3113,\cdot)\) \(\chi_{3920}(3337,\cdot)\) \(\chi_{3920}(3433,\cdot)\) \(\chi_{3920}(3673,\cdot)\) \(\chi_{3920}(3897,\cdot)\)

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: $\Q(\zeta_{84})$
Fixed field: Number field defined by a degree 84 polynomial

Values on generators

\((1471,981,3137,3041)\) → \((1,-1,i,e\left(\frac{25}{42}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(9\)\(11\)\(13\)\(17\)\(19\)\(23\)\(27\)\(29\)\(31\)
\( \chi_{ 3920 }(1977, a) \) \(1\)\(1\)\(e\left(\frac{71}{84}\right)\)\(e\left(\frac{29}{42}\right)\)\(e\left(\frac{13}{42}\right)\)\(e\left(\frac{25}{28}\right)\)\(e\left(\frac{11}{84}\right)\)\(e\left(\frac{5}{6}\right)\)\(e\left(\frac{31}{84}\right)\)\(e\left(\frac{15}{28}\right)\)\(e\left(\frac{5}{7}\right)\)\(e\left(\frac{1}{6}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 3920 }(1977,a) \;\) at \(\;a = \) e.g. 2