Properties

Label 1728.91
Modulus $1728$
Conductor $576$
Order $48$
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(48))
 
M = H._module
 
chi = DirichletCharacter(H, M([24,27,16]))
 
pari: [g,chi] = znchar(Mod(91,1728))
 

Basic properties

Modulus: \(1728\)
Conductor: \(576\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(48\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{576}(283,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: no
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 1728.bw

\(\chi_{1728}(19,\cdot)\) \(\chi_{1728}(91,\cdot)\) \(\chi_{1728}(235,\cdot)\) \(\chi_{1728}(307,\cdot)\) \(\chi_{1728}(451,\cdot)\) \(\chi_{1728}(523,\cdot)\) \(\chi_{1728}(667,\cdot)\) \(\chi_{1728}(739,\cdot)\) \(\chi_{1728}(883,\cdot)\) \(\chi_{1728}(955,\cdot)\) \(\chi_{1728}(1099,\cdot)\) \(\chi_{1728}(1171,\cdot)\) \(\chi_{1728}(1315,\cdot)\) \(\chi_{1728}(1387,\cdot)\) \(\chi_{1728}(1531,\cdot)\) \(\chi_{1728}(1603,\cdot)\)

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: \(\Q(\zeta_{48})\)
Fixed field: Number field defined by a degree 48 polynomial

Values on generators

\((703,325,1217)\) → \((-1,e\left(\frac{9}{16}\right),e\left(\frac{1}{3}\right))\)

First values

\(a\) \(-1\)\(1\)\(5\)\(7\)\(11\)\(13\)\(17\)\(19\)\(23\)\(25\)\(29\)\(31\)
\( \chi_{ 1728 }(91, a) \) \(-1\)\(1\)\(e\left(\frac{11}{48}\right)\)\(e\left(\frac{11}{24}\right)\)\(e\left(\frac{31}{48}\right)\)\(e\left(\frac{5}{48}\right)\)\(-i\)\(e\left(\frac{7}{16}\right)\)\(e\left(\frac{1}{24}\right)\)\(e\left(\frac{11}{24}\right)\)\(e\left(\frac{25}{48}\right)\)\(e\left(\frac{2}{3}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1728 }(91,a) \;\) at \(\;a = \) e.g. 2