Properties

Label 2020.7
Modulus $2020$
Conductor $2020$
Order $100$
Real no
Primitive yes
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2020, base_ring=CyclotomicField(100))
 
M = H._module
 
chi = DirichletCharacter(H, M([50,25,9]))
 
pari: [g,chi] = znchar(Mod(7,2020))
 

Basic properties

Modulus: \(2020\)
Conductor: \(2020\)
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: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 2020.cd

\(\chi_{2020}(7,\cdot)\) \(\chi_{2020}(63,\cdot)\) \(\chi_{2020}(67,\cdot)\) \(\chi_{2020}(143,\cdot)\) \(\chi_{2020}(343,\cdot)\) \(\chi_{2020}(407,\cdot)\) \(\chi_{2020}(487,\cdot)\) \(\chi_{2020}(503,\cdot)\) \(\chi_{2020}(507,\cdot)\) \(\chi_{2020}(523,\cdot)\) \(\chi_{2020}(603,\cdot)\) \(\chi_{2020}(667,\cdot)\) \(\chi_{2020}(867,\cdot)\) \(\chi_{2020}(943,\cdot)\) \(\chi_{2020}(947,\cdot)\) \(\chi_{2020}(1003,\cdot)\) \(\chi_{2020}(1063,\cdot)\) \(\chi_{2020}(1123,\cdot)\) \(\chi_{2020}(1227,\cdot)\) \(\chi_{2020}(1247,\cdot)\) \(\chi_{2020}(1263,\cdot)\) \(\chi_{2020}(1267,\cdot)\) \(\chi_{2020}(1287,\cdot)\) \(\chi_{2020}(1387,\cdot)\) \(\chi_{2020}(1403,\cdot)\) \(\chi_{2020}(1443,\cdot)\) \(\chi_{2020}(1487,\cdot)\) \(\chi_{2020}(1507,\cdot)\) \(\chi_{2020}(1523,\cdot)\) \(\chi_{2020}(1543,\cdot)\) ...

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

\((1011,1617,1921)\) → \((-1,i,e\left(\frac{9}{100}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(7\)\(9\)\(11\)\(13\)\(17\)\(19\)\(21\)\(23\)\(27\)
\( \chi_{ 2020 }(7, a) \) \(-1\)\(1\)\(e\left(\frac{23}{50}\right)\)\(e\left(\frac{14}{25}\right)\)\(e\left(\frac{23}{25}\right)\)\(e\left(\frac{67}{100}\right)\)\(e\left(\frac{69}{100}\right)\)\(e\left(\frac{19}{20}\right)\)\(e\left(\frac{16}{25}\right)\)\(e\left(\frac{1}{50}\right)\)\(e\left(\frac{99}{100}\right)\)\(e\left(\frac{19}{50}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 2020 }(7,a) \;\) at \(\;a = \) e.g. 2