Properties

Label 261.31
Modulus $261$
Conductor $261$
Order $84$
Real no
Primitive yes
Minimal yes
Parity odd

Related objects

Downloads

Learn more

Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(261, base_ring=CyclotomicField(84))
 
M = H._module
 
chi = DirichletCharacter(H, M([28,3]))
 
pari: [g,chi] = znchar(Mod(31,261))
 

Basic properties

Modulus: \(261\)
Conductor: \(261\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(84\)
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 261.w

\(\chi_{261}(31,\cdot)\) \(\chi_{261}(40,\cdot)\) \(\chi_{261}(43,\cdot)\) \(\chi_{261}(61,\cdot)\) \(\chi_{261}(76,\cdot)\) \(\chi_{261}(79,\cdot)\) \(\chi_{261}(85,\cdot)\) \(\chi_{261}(97,\cdot)\) \(\chi_{261}(106,\cdot)\) \(\chi_{261}(124,\cdot)\) \(\chi_{261}(130,\cdot)\) \(\chi_{261}(142,\cdot)\) \(\chi_{261}(148,\cdot)\) \(\chi_{261}(160,\cdot)\) \(\chi_{261}(166,\cdot)\) \(\chi_{261}(184,\cdot)\) \(\chi_{261}(193,\cdot)\) \(\chi_{261}(205,\cdot)\) \(\chi_{261}(211,\cdot)\) \(\chi_{261}(214,\cdot)\) \(\chi_{261}(229,\cdot)\) \(\chi_{261}(247,\cdot)\) \(\chi_{261}(250,\cdot)\) \(\chi_{261}(259,\cdot)\)

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: $\Q(\zeta_{84})$
Fixed field: Number field defined by a degree 84 polynomial

Values on generators

\((146,118)\) → \((e\left(\frac{1}{3}\right),e\left(\frac{1}{28}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(4\)\(5\)\(7\)\(8\)\(10\)\(11\)\(13\)\(14\)\(16\)
\( \chi_{ 261 }(31, a) \) \(-1\)\(1\)\(e\left(\frac{31}{84}\right)\)\(e\left(\frac{31}{42}\right)\)\(e\left(\frac{19}{42}\right)\)\(e\left(\frac{16}{21}\right)\)\(e\left(\frac{3}{28}\right)\)\(e\left(\frac{23}{28}\right)\)\(e\left(\frac{19}{84}\right)\)\(e\left(\frac{13}{42}\right)\)\(e\left(\frac{11}{84}\right)\)\(e\left(\frac{10}{21}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 261 }(31,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 261 }(31,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 261 }(31,·),\chi_{ 261 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 261 }(31,·)) \;\) at \(\; a,b = \) e.g. 1,2