Properties

Conductor 43
Order 2
Real Yes
Primitive Yes
Parity Odd
Orbit Label 43.b

Related objects

Learn more about

Show commands for: SageMath / Pari/GP
sage: from dirichlet_conrey import DirichletGroup_conrey # requires nonstandard Sage package to be installed
sage: H = DirichletGroup_conrey(43)
sage: chi = H[42]
pari: [g,chi] = znchar(Mod(42,43))

Kronecker symbol representation

sage: kronecker_character(-43)
pari: znchartokronecker(g,chi)

\(\displaystyle\left(\frac{-43}{\bullet}\right)\)

Basic properties

sage: chi.conductor()
pari: znconreyconductor(g,chi)
Conductor = 43
sage: chi.multiplicative_order()
pari: charorder(g,chi)
Order = 2
Real = Yes
sage: chi.is_primitive()
pari: #znconreyconductor(g,chi)==1 \\ if not primitive returns [cond,factorization]
Primitive = Yes
sage: chi.is_odd()
pari: zncharisodd(g,chi)
Parity = Odd
Orbit label = 43.b
Orbit index = 2

Galois orbit

sage: chi.sage_character().galois_orbit()
pari: order = charorder(g,chi)
pari: [ charpow(g,chi, k % order) | k <-[1..order-1], gcd(k,order)==1 ]

\(\chi_{43}(42,\cdot)\)

Values on generators

\(3\) → \(-1\)

Values

-11234567891011
\(-1\)\(1\)\(-1\)\(-1\)\(1\)\(-1\)\(1\)\(-1\)\(-1\)\(1\)\(1\)\(1\)
value at  e.g. 2

Related number fields

Field of values \(\Q\)

Gauss sum

sage: chi.sage_character().gauss_sum(a)
pari: znchargauss(g,chi,a)
\( \tau_{ a }( \chi_{ 43 }(42,·) )\;\) at \(\;a = \) e.g. 2
\(\displaystyle \tau_{2}(\chi_{43}(42,\cdot)) = \sum_{r\in \Z/43\Z} \chi_{43}(42,r) e\left(\frac{2r}{43}\right) = -6.5574385243i \)

Jacobi sum

sage: chi.sage_character().jacobi_sum(n)
\( J(\chi_{ 43 }(42,·),\chi_{ 43 }(n,·)) \;\) for \( \; n = \) e.g. 1
\( \displaystyle J(\chi_{43}(42,\cdot),\chi_{43}(1,\cdot)) = \sum_{r\in \Z/43\Z} \chi_{43}(42,r) \chi_{43}(1,1-r) = -1 \)

Kloosterman sum

sage: chi.sage_character().kloosterman_sum(a,b)
\(K(a,b,\chi_{ 43 }(42,·)) \;\) at \(\; a,b = \) e.g. 1,2
\( \displaystyle K(1,2,\chi_{43}(42,·)) = \sum_{r \in \Z/43\Z} \chi_{43}(42,r) e\left(\frac{1 r + 2 r^{-1}}{43}\right) = 0.0 \)