Properties

Label 2420.491
Modulus $2420$
Conductor $484$
Order $110$
Real no
Primitive no
Minimal yes
Parity even

Related objects

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Show commands: Magma / Pari/GP / SageMath
Copy content comment:Define the Dirichlet character
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(2420, base_ring=CyclotomicField(110)) M = H._module chi = DirichletCharacter(H, M([55,0,7]))
 
Copy content gp:[g,chi] = znchar(Mod(491, 2420))
 
Copy content magma:// Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("2420.491");
 

Basic properties

Modulus: \(2420\)
Copy content comment:Modulus
 
Copy content sage:chi.modulus()
 
Copy content gp:g[1][1]
 
Copy content magma:Modulus(chi);
 
Conductor: \(484\)
Copy content comment:Conductor
 
Copy content sage:chi.conductor()
 
Copy content gp:znconreyconductor(g,chi)
 
Copy content magma:Conductor(chi);
 
Order: \(110\)
Copy content comment:Order
 
Copy content sage:chi.multiplicative_order()
 
Copy content gp:charorder(g,chi)
 
Copy content magma:Order(chi);
 
Real: no
Copy content comment:Whether the character is real
 
Copy content sage:chi.multiplicative_order() <= 2
 
Copy content gp:charorder(g,chi) <= 2
 
Copy content magma:Order(chi) le 2;
 
Primitive: no, induced from \(\chi_{484}(7,\cdot)\)
Copy content comment:If the character is primitive
 
Copy content sage:chi.is_primitive()
 
Copy content gp:#znconreyconductor(g,chi)==1
 
Copy content magma:IsPrimitive(chi);
 
Minimal: yes
Parity: even
Copy content comment:Parity
 
Copy content sage:chi.is_odd()
 
Copy content gp:zncharisodd(g,chi)
 
Copy content magma:IsOdd(chi);
 

Galois orbit 2420.bq

\(\chi_{2420}(51,\cdot)\) \(\chi_{2420}(151,\cdot)\) \(\chi_{2420}(171,\cdot)\) \(\chi_{2420}(211,\cdot)\) \(\chi_{2420}(271,\cdot)\) \(\chi_{2420}(371,\cdot)\) \(\chi_{2420}(391,\cdot)\) \(\chi_{2420}(431,\cdot)\) \(\chi_{2420}(491,\cdot)\) \(\chi_{2420}(591,\cdot)\) \(\chi_{2420}(611,\cdot)\) \(\chi_{2420}(651,\cdot)\) \(\chi_{2420}(711,\cdot)\) \(\chi_{2420}(811,\cdot)\) \(\chi_{2420}(831,\cdot)\) \(\chi_{2420}(871,\cdot)\) \(\chi_{2420}(931,\cdot)\) \(\chi_{2420}(1031,\cdot)\) \(\chi_{2420}(1051,\cdot)\) \(\chi_{2420}(1091,\cdot)\) \(\chi_{2420}(1151,\cdot)\) \(\chi_{2420}(1251,\cdot)\) \(\chi_{2420}(1271,\cdot)\) \(\chi_{2420}(1311,\cdot)\) \(\chi_{2420}(1471,\cdot)\) \(\chi_{2420}(1491,\cdot)\) \(\chi_{2420}(1531,\cdot)\) \(\chi_{2420}(1591,\cdot)\) \(\chi_{2420}(1711,\cdot)\) \(\chi_{2420}(1751,\cdot)\) ...

Copy content comment:Galois orbit
 
Copy content sage:chi.galois_orbit()
 
Copy content gp:order = charorder(g,chi) [ charpow(g,chi, k % order) | k <-[1..order-1], gcd(k,order)==1 ]
 
Copy content magma:order := Order(chi); { chi^k : k in [1..order-1] | GCD(k,order) eq 1 };
 

Related number fields

Field of values: $\Q(\zeta_{55})$
Copy content comment:Field of values of chi
 
Copy content sage:CyclotomicField(chi.multiplicative_order())
 
Copy content gp:nfinit(polcyclo(charorder(g,chi)))
 
Copy content magma:CyclotomicField(Order(chi));
 
Fixed field: Number field defined by a degree 110 polynomial (not computed)
Copy content comment:Fixed field
 
Copy content sage:chi.fixed_field()
 

Values on generators

\((1211,1937,2301)\) → \((-1,1,e\left(\frac{7}{110}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(7\)\(9\)\(13\)\(17\)\(19\)\(21\)\(23\)\(27\)\(29\)
\( \chi_{ 2420 }(491, a) \) \(1\)\(1\)\(e\left(\frac{1}{10}\right)\)\(e\left(\frac{52}{55}\right)\)\(e\left(\frac{1}{5}\right)\)\(e\left(\frac{47}{110}\right)\)\(e\left(\frac{13}{110}\right)\)\(e\left(\frac{43}{55}\right)\)\(e\left(\frac{1}{22}\right)\)\(e\left(\frac{21}{22}\right)\)\(e\left(\frac{3}{10}\right)\)\(e\left(\frac{9}{110}\right)\)
Copy content comment:Value of chi at x
 
Copy content sage:chi(x) # x integer
 
Copy content gp:chareval(g,chi,x) \\ x integer, value in Q/Z
 
Copy content magma:chi(x)
 
\( \chi_{ 2420 }(491,a) \;\) at \(\;a = \) e.g. 2