Properties

Label 2005.16
Modulus $2005$
Conductor $401$
Order $50$
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(50))
 
M = H._module
 
chi = DirichletCharacter(H, M([0,13]))
 
pari: [g,chi] = znchar(Mod(16,2005))
 

Basic properties

Modulus: \(2005\)
Conductor: \(401\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(50\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{401}(16,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 2005.bh

\(\chi_{2005}(16,\cdot)\) \(\chi_{2005}(41,\cdot)\) \(\chi_{2005}(86,\cdot)\) \(\chi_{2005}(146,\cdot)\) \(\chi_{2005}(206,\cdot)\) \(\chi_{2005}(276,\cdot)\) \(\chi_{2005}(376,\cdot)\) \(\chi_{2005}(396,\cdot)\) \(\chi_{2005}(471,\cdot)\) \(\chi_{2005}(481,\cdot)\) \(\chi_{2005}(546,\cdot)\) \(\chi_{2005}(606,\cdot)\) \(\chi_{2005}(751,\cdot)\) \(\chi_{2005}(816,\cdot)\) \(\chi_{2005}(1126,\cdot)\) \(\chi_{2005}(1426,\cdot)\) \(\chi_{2005}(1431,\cdot)\) \(\chi_{2005}(1516,\cdot)\) \(\chi_{2005}(1541,\cdot)\) \(\chi_{2005}(1781,\cdot)\)

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: \(\Q(\zeta_{25})\)
Fixed field: Number field defined by a degree 50 polynomial

Values on generators

\((402,1206)\) → \((1,e\left(\frac{13}{50}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(6\)\(7\)\(8\)\(9\)\(11\)\(12\)\(13\)
\( \chi_{ 2005 }(16, a) \) \(1\)\(1\)\(e\left(\frac{19}{25}\right)\)\(e\left(\frac{13}{50}\right)\)\(e\left(\frac{13}{25}\right)\)\(e\left(\frac{1}{50}\right)\)\(e\left(\frac{3}{25}\right)\)\(e\left(\frac{7}{25}\right)\)\(e\left(\frac{13}{25}\right)\)\(e\left(\frac{11}{25}\right)\)\(e\left(\frac{39}{50}\right)\)\(e\left(\frac{47}{50}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 2005 }(16,a) \;\) at \(\;a = \) e.g. 2