Properties

Label 2005.81
Modulus $2005$
Conductor $401$
Order $100$
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(100))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,1]))
 
pari: [g,chi] = znchar(Mod(81,2005))
 

Basic properties

Modulus: \(2005\)
Conductor: \(401\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(100\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{401}(81,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 2005.bo

\(\chi_{2005}(81,\cdot)\) \(\chi_{2005}(116,\cdot)\) \(\chi_{2005}(121,\cdot)\) \(\chi_{2005}(156,\cdot)\) \(\chi_{2005}(291,\cdot)\) \(\chi_{2005}(301,\cdot)\) \(\chi_{2005}(311,\cdot)\) \(\chi_{2005}(491,\cdot)\) \(\chi_{2005}(501,\cdot)\) \(\chi_{2005}(511,\cdot)\) \(\chi_{2005}(646,\cdot)\) \(\chi_{2005}(681,\cdot)\) \(\chi_{2005}(686,\cdot)\) \(\chi_{2005}(721,\cdot)\) \(\chi_{2005}(806,\cdot)\) \(\chi_{2005}(851,\cdot)\) \(\chi_{2005}(866,\cdot)\) \(\chi_{2005}(871,\cdot)\) \(\chi_{2005}(896,\cdot)\) \(\chi_{2005}(901,\cdot)\) \(\chi_{2005}(951,\cdot)\) \(\chi_{2005}(1006,\cdot)\) \(\chi_{2005}(1146,\cdot)\) \(\chi_{2005}(1221,\cdot)\) \(\chi_{2005}(1296,\cdot)\) \(\chi_{2005}(1316,\cdot)\) \(\chi_{2005}(1386,\cdot)\) \(\chi_{2005}(1421,\cdot)\) \(\chi_{2005}(1491,\cdot)\) \(\chi_{2005}(1511,\cdot)\) ...

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

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

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(11\)\(12\)\(13\)
\( \chi_{ 2005 }(81, a) \) \(1\)\(1\)\(e\left(\frac{13}{50}\right)\)\(e\left(\frac{1}{100}\right)\)\(e\left(\frac{13}{25}\right)\)\(e\left(\frac{27}{100}\right)\)\(e\left(\frac{31}{50}\right)\)\(e\left(\frac{39}{50}\right)\)\(e\left(\frac{1}{50}\right)\)\(e\left(\frac{47}{50}\right)\)\(e\left(\frac{53}{100}\right)\)\(e\left(\frac{19}{100}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 2005 }(81,a) \;\) at \(\;a = \) e.g. 2