Properties

Label 1280.9
Modulus $1280$
Conductor $640$
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(1280, base_ring=CyclotomicField(32))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,3,16]))
 
pari: [g,chi] = znchar(Mod(9,1280))
 

Basic properties

Modulus: \(1280\)
Conductor: \(640\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(32\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{640}(509,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: no
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 1280.bo

\(\chi_{1280}(9,\cdot)\) \(\chi_{1280}(89,\cdot)\) \(\chi_{1280}(169,\cdot)\) \(\chi_{1280}(249,\cdot)\) \(\chi_{1280}(329,\cdot)\) \(\chi_{1280}(409,\cdot)\) \(\chi_{1280}(489,\cdot)\) \(\chi_{1280}(569,\cdot)\) \(\chi_{1280}(649,\cdot)\) \(\chi_{1280}(729,\cdot)\) \(\chi_{1280}(809,\cdot)\) \(\chi_{1280}(889,\cdot)\) \(\chi_{1280}(969,\cdot)\) \(\chi_{1280}(1049,\cdot)\) \(\chi_{1280}(1129,\cdot)\) \(\chi_{1280}(1209,\cdot)\)

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: 32.32.478904856520590268236983445984471619880855975682375680000000000000000.1

Values on generators

\((511,261,257)\) → \((1,e\left(\frac{3}{32}\right),-1)\)

First values

\(a\) \(-1\)\(1\)\(3\)\(7\)\(9\)\(11\)\(13\)\(17\)\(19\)\(21\)\(23\)\(27\)
\( \chi_{ 1280 }(9, a) \) \(1\)\(1\)\(e\left(\frac{25}{32}\right)\)\(e\left(\frac{7}{16}\right)\)\(e\left(\frac{9}{16}\right)\)\(e\left(\frac{31}{32}\right)\)\(e\left(\frac{29}{32}\right)\)\(e\left(\frac{1}{8}\right)\)\(e\left(\frac{5}{32}\right)\)\(e\left(\frac{7}{32}\right)\)\(e\left(\frac{13}{16}\right)\)\(e\left(\frac{11}{32}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1280 }(9,a) \;\) at \(\;a = \) e.g. 2