Properties

Label 3840.121
Modulus $3840$
Conductor $128$
Order $32$
Real no
Primitive no
Minimal no
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(3840, base_ring=CyclotomicField(32))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,21,0,0]))
 
pari: [g,chi] = znchar(Mod(121,3840))
 

Basic properties

Modulus: \(3840\)
Conductor: \(128\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(32\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{128}(117,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: no
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 3840.dc

\(\chi_{3840}(121,\cdot)\) \(\chi_{3840}(361,\cdot)\) \(\chi_{3840}(601,\cdot)\) \(\chi_{3840}(841,\cdot)\) \(\chi_{3840}(1081,\cdot)\) \(\chi_{3840}(1321,\cdot)\) \(\chi_{3840}(1561,\cdot)\) \(\chi_{3840}(1801,\cdot)\) \(\chi_{3840}(2041,\cdot)\) \(\chi_{3840}(2281,\cdot)\) \(\chi_{3840}(2521,\cdot)\) \(\chi_{3840}(2761,\cdot)\) \(\chi_{3840}(3001,\cdot)\) \(\chi_{3840}(3241,\cdot)\) \(\chi_{3840}(3481,\cdot)\) \(\chi_{3840}(3721,\cdot)\)

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: \(\Q(\zeta_{32})\)
Fixed field: \(\Q(\zeta_{128})^+\)

Values on generators

\((511,2821,2561,1537)\) → \((1,e\left(\frac{21}{32}\right),1,1)\)

First values

\(a\) \(-1\)\(1\)\(7\)\(11\)\(13\)\(17\)\(19\)\(23\)\(29\)\(31\)\(37\)\(41\)
\( \chi_{ 3840 }(121, a) \) \(1\)\(1\)\(e\left(\frac{9}{16}\right)\)\(e\left(\frac{25}{32}\right)\)\(e\left(\frac{27}{32}\right)\)\(e\left(\frac{3}{8}\right)\)\(e\left(\frac{3}{32}\right)\)\(e\left(\frac{3}{16}\right)\)\(e\left(\frac{23}{32}\right)\)\(i\)\(e\left(\frac{13}{32}\right)\)\(e\left(\frac{11}{16}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 3840 }(121,a) \;\) at \(\;a = \) e.g. 2