Properties

Label 2005.3
Modulus $2005$
Conductor $2005$
Order $400$
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(400))
 
M = H._module
 
chi = DirichletCharacter(H, M([300,1]))
 
pari: [g,chi] = znchar(Mod(3,2005))
 

Basic properties

Modulus: \(2005\)
Conductor: \(2005\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(400\)
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.cb

\(\chi_{2005}(3,\cdot)\) \(\chi_{2005}(17,\cdot)\) \(\chi_{2005}(27,\cdot)\) \(\chi_{2005}(38,\cdot)\) \(\chi_{2005}(52,\cdot)\) \(\chi_{2005}(53,\cdot)\) \(\chi_{2005}(92,\cdot)\) \(\chi_{2005}(97,\cdot)\) \(\chi_{2005}(107,\cdot)\) \(\chi_{2005}(118,\cdot)\) \(\chi_{2005}(123,\cdot)\) \(\chi_{2005}(127,\cdot)\) \(\chi_{2005}(132,\cdot)\) \(\chi_{2005}(143,\cdot)\) \(\chi_{2005}(167,\cdot)\) \(\chi_{2005}(168,\cdot)\) \(\chi_{2005}(182,\cdot)\) \(\chi_{2005}(227,\cdot)\) \(\chi_{2005}(233,\cdot)\) \(\chi_{2005}(258,\cdot)\) \(\chi_{2005}(262,\cdot)\) \(\chi_{2005}(267,\cdot)\) \(\chi_{2005}(272,\cdot)\) \(\chi_{2005}(277,\cdot)\) \(\chi_{2005}(278,\cdot)\) \(\chi_{2005}(283,\cdot)\) \(\chi_{2005}(322,\cdot)\) \(\chi_{2005}(327,\cdot)\) \(\chi_{2005}(342,\cdot)\) \(\chi_{2005}(348,\cdot)\) ...

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: $\Q(\zeta_{400})$
Fixed field: Number field defined by a degree 400 polynomial (not computed)

Values on generators

\((402,1206)\) → \((-i,e\left(\frac{1}{400}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(11\)\(12\)\(13\)
\( \chi_{ 2005 }(3, a) \) \(1\)\(1\)\(e\left(\frac{163}{200}\right)\)\(e\left(\frac{101}{400}\right)\)\(e\left(\frac{63}{100}\right)\)\(e\left(\frac{27}{400}\right)\)\(e\left(\frac{181}{200}\right)\)\(e\left(\frac{89}{200}\right)\)\(e\left(\frac{101}{200}\right)\)\(e\left(\frac{97}{200}\right)\)\(e\left(\frac{353}{400}\right)\)\(e\left(\frac{19}{400}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 2005 }(3,a) \;\) at \(\;a = \) e.g. 2