Properties

Label 43.28
Modulus $43$
Conductor $43$
Order $42$
Real no
Primitive yes
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(43, base_ring=CyclotomicField(42))
 
M = H._module
 
chi = DirichletCharacter(H, M([5]))
 
pari: [g,chi] = znchar(Mod(28,43))
 

Basic properties

Modulus: \(43\)
Conductor: \(43\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(42\)
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 43.h

\(\chi_{43}(3,\cdot)\) \(\chi_{43}(5,\cdot)\) \(\chi_{43}(12,\cdot)\) \(\chi_{43}(18,\cdot)\) \(\chi_{43}(19,\cdot)\) \(\chi_{43}(20,\cdot)\) \(\chi_{43}(26,\cdot)\) \(\chi_{43}(28,\cdot)\) \(\chi_{43}(29,\cdot)\) \(\chi_{43}(30,\cdot)\) \(\chi_{43}(33,\cdot)\) \(\chi_{43}(34,\cdot)\)

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: \(\Q(\zeta_{21})\)
Fixed field: Number field defined by a degree 42 polynomial

Values on generators

\(3\) → \(e\left(\frac{5}{42}\right)\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(5\)\(6\)\(7\)\(8\)\(9\)\(10\)\(11\)
\( \chi_{ 43 }(28, a) \) \(-1\)\(1\)\(e\left(\frac{3}{14}\right)\)\(e\left(\frac{5}{42}\right)\)\(e\left(\frac{3}{7}\right)\)\(e\left(\frac{41}{42}\right)\)\(e\left(\frac{1}{3}\right)\)\(e\left(\frac{1}{6}\right)\)\(e\left(\frac{9}{14}\right)\)\(e\left(\frac{5}{21}\right)\)\(e\left(\frac{4}{21}\right)\)\(e\left(\frac{4}{7}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 43 }(28,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 43 }(28,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 43 }(28,·),\chi_{ 43 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 43 }(28,·)) \;\) at \(\; a,b = \) e.g. 1,2