Properties

Label 2842.93
Modulus $2842$
Conductor $1421$
Order $42$
Real no
Primitive no
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2842, base_ring=CyclotomicField(42))
 
M = H._module
 
chi = DirichletCharacter(H, M([8,9]))
 
pari: [g,chi] = znchar(Mod(93,2842))
 

Basic properties

Modulus: \(2842\)
Conductor: \(1421\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(42\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{1421}(93,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 2842.cy

\(\chi_{2842}(93,\cdot)\) \(\chi_{2842}(149,\cdot)\) \(\chi_{2842}(207,\cdot)\) \(\chi_{2842}(473,\cdot)\) \(\chi_{2842}(515,\cdot)\) \(\chi_{2842}(709,\cdot)\) \(\chi_{2842}(821,\cdot)\) \(\chi_{2842}(1339,\cdot)\) \(\chi_{2842}(1369,\cdot)\) \(\chi_{2842}(1675,\cdot)\) \(\chi_{2842}(1803,\cdot)\) \(\chi_{2842}(2797,\cdot)\)

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: \(\Q(\zeta_{21})\)
Fixed field: Number field defined by a degree 42 polynomial

Values on generators

\((1277,785)\) → \((e\left(\frac{4}{21}\right),e\left(\frac{3}{14}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(5\)\(9\)\(11\)\(13\)\(15\)\(17\)\(19\)\(23\)\(25\)
\( \chi_{ 2842 }(93, a) \) \(1\)\(1\)\(e\left(\frac{11}{42}\right)\)\(e\left(\frac{5}{21}\right)\)\(e\left(\frac{11}{21}\right)\)\(e\left(\frac{41}{42}\right)\)\(e\left(\frac{1}{7}\right)\)\(-1\)\(e\left(\frac{11}{42}\right)\)\(e\left(\frac{25}{42}\right)\)\(e\left(\frac{11}{21}\right)\)\(e\left(\frac{10}{21}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 2842 }(93,a) \;\) at \(\;a = \) e.g. 2