Properties

Label 2005.261
Modulus $2005$
Conductor $401$
Order $200$
Real no
Primitive no
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2005, base_ring=CyclotomicField(200))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,181]))
 
pari: [g,chi] = znchar(Mod(261,2005))
 

Basic properties

Modulus: \(2005\)
Conductor: \(401\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(200\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{401}(261,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 2005.bx

\(\chi_{2005}(11,\cdot)\) \(\chi_{2005}(36,\cdot)\) \(\chi_{2005}(111,\cdot)\) \(\chi_{2005}(166,\cdot)\) \(\chi_{2005}(176,\cdot)\) \(\chi_{2005}(181,\cdot)\) \(\chi_{2005}(186,\cdot)\) \(\chi_{2005}(201,\cdot)\) \(\chi_{2005}(221,\cdot)\) \(\chi_{2005}(226,\cdot)\) \(\chi_{2005}(241,\cdot)\) \(\chi_{2005}(261,\cdot)\) \(\chi_{2005}(346,\cdot)\) \(\chi_{2005}(351,\cdot)\) \(\chi_{2005}(361,\cdot)\) \(\chi_{2005}(391,\cdot)\) \(\chi_{2005}(411,\cdot)\) \(\chi_{2005}(441,\cdot)\) \(\chi_{2005}(451,\cdot)\) \(\chi_{2005}(456,\cdot)\) \(\chi_{2005}(541,\cdot)\) \(\chi_{2005}(561,\cdot)\) \(\chi_{2005}(576,\cdot)\) \(\chi_{2005}(581,\cdot)\) \(\chi_{2005}(601,\cdot)\) \(\chi_{2005}(616,\cdot)\) \(\chi_{2005}(621,\cdot)\) \(\chi_{2005}(626,\cdot)\) \(\chi_{2005}(636,\cdot)\) \(\chi_{2005}(691,\cdot)\) ...

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: $\Q(\zeta_{200})$
Fixed field: Number field defined by a degree 200 polynomial (not computed)

Values on generators

\((402,1206)\) → \((1,e\left(\frac{181}{200}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(11\)\(12\)\(13\)
\( \chi_{ 2005 }(261, a) \) \(1\)\(1\)\(e\left(\frac{53}{100}\right)\)\(e\left(\frac{181}{200}\right)\)\(e\left(\frac{3}{50}\right)\)\(e\left(\frac{87}{200}\right)\)\(e\left(\frac{11}{100}\right)\)\(e\left(\frac{59}{100}\right)\)\(e\left(\frac{81}{100}\right)\)\(e\left(\frac{57}{100}\right)\)\(e\left(\frac{193}{200}\right)\)\(e\left(\frac{139}{200}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 2005 }(261,a) \;\) at \(\;a = \) e.g. 2