Properties

Label 1988.921
Modulus $1988$
Conductor $497$
Order $210$
Real no
Primitive no
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1988, base_ring=CyclotomicField(210))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,140,123]))
 
pari: [g,chi] = znchar(Mod(921,1988))
 

Basic properties

Modulus: \(1988\)
Conductor: \(497\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(210\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{497}(424,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 1988.ch

\(\chi_{1988}(53,\cdot)\) \(\chi_{1988}(65,\cdot)\) \(\chi_{1988}(93,\cdot)\) \(\chi_{1988}(149,\cdot)\) \(\chi_{1988}(177,\cdot)\) \(\chi_{1988}(205,\cdot)\) \(\chi_{1988}(305,\cdot)\) \(\chi_{1988}(317,\cdot)\) \(\chi_{1988}(345,\cdot)\) \(\chi_{1988}(417,\cdot)\) \(\chi_{1988}(457,\cdot)\) \(\chi_{1988}(473,\cdot)\) \(\chi_{1988}(485,\cdot)\) \(\chi_{1988}(541,\cdot)\) \(\chi_{1988}(681,\cdot)\) \(\chi_{1988}(765,\cdot)\) \(\chi_{1988}(809,\cdot)\) \(\chi_{1988}(837,\cdot)\) \(\chi_{1988}(849,\cdot)\) \(\chi_{1988}(865,\cdot)\) \(\chi_{1988}(905,\cdot)\) \(\chi_{1988}(921,\cdot)\) \(\chi_{1988}(1005,\cdot)\) \(\chi_{1988}(1061,\cdot)\) \(\chi_{1988}(1117,\cdot)\) \(\chi_{1988}(1157,\cdot)\) \(\chi_{1988}(1201,\cdot)\) \(\chi_{1988}(1229,\cdot)\) \(\chi_{1988}(1269,\cdot)\) \(\chi_{1988}(1285,\cdot)\) ...

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: $\Q(\zeta_{105})$
Fixed field: Number field defined by a degree 210 polynomial (not computed)

Values on generators

\((995,1137,1569)\) → \((1,e\left(\frac{2}{3}\right),e\left(\frac{41}{70}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(5\)\(9\)\(11\)\(13\)\(15\)\(17\)\(19\)\(23\)\(25\)
\( \chi_{ 1988 }(921, a) \) \(-1\)\(1\)\(e\left(\frac{94}{105}\right)\)\(e\left(\frac{11}{15}\right)\)\(e\left(\frac{83}{105}\right)\)\(e\left(\frac{173}{210}\right)\)\(e\left(\frac{59}{70}\right)\)\(e\left(\frac{22}{35}\right)\)\(e\left(\frac{11}{30}\right)\)\(e\left(\frac{74}{105}\right)\)\(e\left(\frac{5}{42}\right)\)\(e\left(\frac{7}{15}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1988 }(921,a) \;\) at \(\;a = \) e.g. 2