Properties

Label 1856.25
Modulus $1856$
Conductor $928$
Order $56$
Real no
Primitive no
Minimal no
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1856, base_ring=CyclotomicField(56))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,7,32]))
 
pari: [g,chi] = znchar(Mod(25,1856))
 

Basic properties

Modulus: \(1856\)
Conductor: \(928\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(56\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{928}(837,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: no
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 1856.ck

\(\chi_{1856}(25,\cdot)\) \(\chi_{1856}(169,\cdot)\) \(\chi_{1856}(281,\cdot)\) \(\chi_{1856}(297,\cdot)\) \(\chi_{1856}(313,\cdot)\) \(\chi_{1856}(393,\cdot)\) \(\chi_{1856}(489,\cdot)\) \(\chi_{1856}(633,\cdot)\) \(\chi_{1856}(745,\cdot)\) \(\chi_{1856}(761,\cdot)\) \(\chi_{1856}(777,\cdot)\) \(\chi_{1856}(857,\cdot)\) \(\chi_{1856}(953,\cdot)\) \(\chi_{1856}(1097,\cdot)\) \(\chi_{1856}(1209,\cdot)\) \(\chi_{1856}(1225,\cdot)\) \(\chi_{1856}(1241,\cdot)\) \(\chi_{1856}(1321,\cdot)\) \(\chi_{1856}(1417,\cdot)\) \(\chi_{1856}(1561,\cdot)\) \(\chi_{1856}(1673,\cdot)\) \(\chi_{1856}(1689,\cdot)\) \(\chi_{1856}(1705,\cdot)\) \(\chi_{1856}(1785,\cdot)\)

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: $\Q(\zeta_{56})$
Fixed field: Number field defined by a degree 56 polynomial

Values on generators

\((639,581,321)\) → \((1,e\left(\frac{1}{8}\right),e\left(\frac{4}{7}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(5\)\(7\)\(9\)\(11\)\(13\)\(15\)\(17\)\(19\)\(21\)
\( \chi_{ 1856 }(25, a) \) \(1\)\(1\)\(e\left(\frac{13}{56}\right)\)\(e\left(\frac{39}{56}\right)\)\(e\left(\frac{3}{28}\right)\)\(e\left(\frac{13}{28}\right)\)\(e\left(\frac{51}{56}\right)\)\(e\left(\frac{9}{56}\right)\)\(e\left(\frac{13}{14}\right)\)\(-1\)\(e\left(\frac{1}{56}\right)\)\(e\left(\frac{19}{56}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1856 }(25,a) \;\) at \(\;a = \) e.g. 2