Properties

Label 8820.131
Modulus $8820$
Conductor $1764$
Order $42$
Real no
Primitive no
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(8820, base_ring=CyclotomicField(42))
 
M = H._module
 
chi = DirichletCharacter(H, M([21,35,0,41]))
 
pari: [g,chi] = znchar(Mod(131,8820))
 

Basic properties

Modulus: \(8820\)
Conductor: \(1764\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(42\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{1764}(131,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 8820.he

\(\chi_{8820}(131,\cdot)\) \(\chi_{8820}(731,\cdot)\) \(\chi_{8820}(2651,\cdot)\) \(\chi_{8820}(3251,\cdot)\) \(\chi_{8820}(3911,\cdot)\) \(\chi_{8820}(4511,\cdot)\) \(\chi_{8820}(5171,\cdot)\) \(\chi_{8820}(5771,\cdot)\) \(\chi_{8820}(6431,\cdot)\) \(\chi_{8820}(7031,\cdot)\) \(\chi_{8820}(7691,\cdot)\) \(\chi_{8820}(8291,\cdot)\)

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: \(\Q(\zeta_{21})\)
Fixed field: 42.0.594905448297071958649415344409202411272524582191201645168397283612406235485559112254331131690310420404371456.2

Values on generators

\((4411,7841,7057,1081)\) → \((-1,e\left(\frac{5}{6}\right),1,e\left(\frac{41}{42}\right))\)

First values

\(a\) \(-1\)\(1\)\(11\)\(13\)\(17\)\(19\)\(23\)\(29\)\(31\)\(37\)\(41\)\(43\)
\( \chi_{ 8820 }(131, a) \) \(-1\)\(1\)\(e\left(\frac{8}{21}\right)\)\(e\left(\frac{37}{42}\right)\)\(e\left(\frac{19}{21}\right)\)\(e\left(\frac{2}{3}\right)\)\(e\left(\frac{16}{21}\right)\)\(e\left(\frac{17}{42}\right)\)\(1\)\(e\left(\frac{5}{21}\right)\)\(e\left(\frac{17}{21}\right)\)\(e\left(\frac{29}{42}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 8820 }(131,a) \;\) at \(\;a = \) e.g. 2