Properties

Label 1728.1457
Modulus $1728$
Conductor $48$
Order $4$
Real no
Primitive no
Minimal no
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1728, base_ring=CyclotomicField(4))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,1,2]))
 
pari: [g,chi] = znchar(Mod(1457,1728))
 

Basic properties

Modulus: \(1728\)
Conductor: \(48\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(4\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{48}(5,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: no
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 1728.j

\(\chi_{1728}(593,\cdot)\) \(\chi_{1728}(1457,\cdot)\)

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: \(\mathbb{Q}(i)\)
Fixed field: 4.0.18432.2

Values on generators

\((703,325,1217)\) → \((1,i,-1)\)

First values

\(a\) \(-1\)\(1\)\(5\)\(7\)\(11\)\(13\)\(17\)\(19\)\(23\)\(25\)\(29\)\(31\)
\( \chi_{ 1728 }(1457, a) \) \(-1\)\(1\)\(-i\)\(-1\)\(-i\)\(-i\)\(-1\)\(-i\)\(1\)\(-1\)\(i\)\(1\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1728 }(1457,a) \;\) at \(\;a = \) e.g. 2