Properties

Label 2005.4
Modulus $2005$
Conductor $2005$
Order $100$
Real no
Primitive yes
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2005, base_ring=CyclotomicField(100))
 
M = H._module
 
chi = DirichletCharacter(H, M([50,13]))
 
pari: [g,chi] = znchar(Mod(4,2005))
 

Basic properties

Modulus: \(2005\)
Conductor: \(2005\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(100\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: yes
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 2005.bt

\(\chi_{2005}(4,\cdot)\) \(\chi_{2005}(49,\cdot)\) \(\chi_{2005}(64,\cdot)\) \(\chi_{2005}(69,\cdot)\) \(\chi_{2005}(94,\cdot)\) \(\chi_{2005}(99,\cdot)\) \(\chi_{2005}(149,\cdot)\) \(\chi_{2005}(204,\cdot)\) \(\chi_{2005}(344,\cdot)\) \(\chi_{2005}(419,\cdot)\) \(\chi_{2005}(494,\cdot)\) \(\chi_{2005}(514,\cdot)\) \(\chi_{2005}(584,\cdot)\) \(\chi_{2005}(619,\cdot)\) \(\chi_{2005}(689,\cdot)\) \(\chi_{2005}(709,\cdot)\) \(\chi_{2005}(784,\cdot)\) \(\chi_{2005}(859,\cdot)\) \(\chi_{2005}(999,\cdot)\) \(\chi_{2005}(1054,\cdot)\) \(\chi_{2005}(1104,\cdot)\) \(\chi_{2005}(1109,\cdot)\) \(\chi_{2005}(1134,\cdot)\) \(\chi_{2005}(1139,\cdot)\) \(\chi_{2005}(1154,\cdot)\) \(\chi_{2005}(1199,\cdot)\) \(\chi_{2005}(1284,\cdot)\) \(\chi_{2005}(1319,\cdot)\) \(\chi_{2005}(1324,\cdot)\) \(\chi_{2005}(1359,\cdot)\) ...

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: $\Q(\zeta_{100})$
Fixed field: Number field defined by a degree 100 polynomial

Values on generators

\((402,1206)\) → \((-1,e\left(\frac{13}{100}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(11\)\(12\)\(13\)
\( \chi_{ 2005 }(4, a) \) \(1\)\(1\)\(e\left(\frac{22}{25}\right)\)\(e\left(\frac{63}{100}\right)\)\(e\left(\frac{19}{25}\right)\)\(e\left(\frac{51}{100}\right)\)\(e\left(\frac{14}{25}\right)\)\(e\left(\frac{16}{25}\right)\)\(e\left(\frac{13}{50}\right)\)\(e\left(\frac{11}{50}\right)\)\(e\left(\frac{39}{100}\right)\)\(e\left(\frac{97}{100}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 2005 }(4,a) \;\) at \(\;a = \) e.g. 2