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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [522,2,Mod(289,522)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)
 
Copy content magma:// Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("522.289"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(522, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 1])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 522 = 2 \cdot 3^{2} \cdot 29 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 522.d (of order \(2\), degree \(1\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4,0,0,-4,0,0,4] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(7)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(4.16819098551\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(i, \sqrt{13})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 7x^{2} + 9 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

Copy content comment:q-expansion
 
Copy content sage:f.q_expansion() # note that sage often uses an isomorphic number field
 
Copy content gp:mfcoefs(f, 20)
 

Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_1 q^{2} - q^{4} + \beta_{3} q^{5} + q^{7} - \beta_1 q^{8} + \beta_{2} q^{10} - 2 \beta_1 q^{11} + 2 q^{13} + \beta_1 q^{14} + q^{16} - 5 \beta_1 q^{17} + \beta_{2} q^{19} - \beta_{3} q^{20}+ \cdots - 6 \beta_1 q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 4 q^{4} + 4 q^{7} + 8 q^{13} + 4 q^{16} + 8 q^{22} + 32 q^{25} - 4 q^{28} + 20 q^{34} - 24 q^{49} - 8 q^{52} + 16 q^{58} - 4 q^{64} - 40 q^{67} - 20 q^{82} - 8 q^{88} + 8 q^{91} - 12 q^{94}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 7x^{2} + 9 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{3} + 4\nu ) / 3 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{3} + 10\nu ) / 3 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( 2\nu^{2} + 7 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{2} - \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{3} - 7 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( -2\beta_{2} + 5\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/522\mathbb{Z}\right)^\times\).

\(n\) \(379\) \(407\)
\(\chi(n)\) \(-1\) \(1\)

Embeddings

For each embedding \(\iota_m\) of the coefficient field, the values \(\iota_m(a_n)\) are shown below.

For more information on an embedded modular form you can click on its label.

Copy content comment:embeddings in the coefficient field
 
Copy content gp:mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
289.1
2.30278i
1.30278i
2.30278i
1.30278i
1.00000i 0 −1.00000 −3.60555 0 1.00000 1.00000i 0 3.60555i
289.2 1.00000i 0 −1.00000 3.60555 0 1.00000 1.00000i 0 3.60555i
289.3 1.00000i 0 −1.00000 −3.60555 0 1.00000 1.00000i 0 3.60555i
289.4 1.00000i 0 −1.00000 3.60555 0 1.00000 1.00000i 0 3.60555i
\(n\): e.g. 2-40 or 80-90
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
29.b even 2 1 inner
87.d odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 522.2.d.c 4
3.b odd 2 1 inner 522.2.d.c 4
4.b odd 2 1 4176.2.o.m 4
12.b even 2 1 4176.2.o.m 4
29.b even 2 1 inner 522.2.d.c 4
87.d odd 2 1 inner 522.2.d.c 4
116.d odd 2 1 4176.2.o.m 4
348.b even 2 1 4176.2.o.m 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
522.2.d.c 4 1.a even 1 1 trivial
522.2.d.c 4 3.b odd 2 1 inner
522.2.d.c 4 29.b even 2 1 inner
522.2.d.c 4 87.d odd 2 1 inner
4176.2.o.m 4 4.b odd 2 1
4176.2.o.m 4 12.b even 2 1
4176.2.o.m 4 116.d odd 2 1
4176.2.o.m 4 348.b even 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(522, [\chi])\):

\( T_{5}^{2} - 13 \) Copy content Toggle raw display
\( T_{7} - 1 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{2} + 1)^{2} \) Copy content Toggle raw display
$3$ \( T^{4} \) Copy content Toggle raw display
$5$ \( (T^{2} - 13)^{2} \) Copy content Toggle raw display
$7$ \( (T - 1)^{4} \) Copy content Toggle raw display
$11$ \( (T^{2} + 4)^{2} \) Copy content Toggle raw display
$13$ \( (T - 2)^{4} \) Copy content Toggle raw display
$17$ \( (T^{2} + 25)^{2} \) Copy content Toggle raw display
$19$ \( (T^{2} + 13)^{2} \) Copy content Toggle raw display
$23$ \( T^{4} \) Copy content Toggle raw display
$29$ \( T^{4} + 6T^{2} + 841 \) Copy content Toggle raw display
$31$ \( (T^{2} + 52)^{2} \) Copy content Toggle raw display
$37$ \( (T^{2} + 13)^{2} \) Copy content Toggle raw display
$41$ \( (T^{2} + 25)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} + 117)^{2} \) Copy content Toggle raw display
$47$ \( (T^{2} + 9)^{2} \) Copy content Toggle raw display
$53$ \( (T^{2} - 52)^{2} \) Copy content Toggle raw display
$59$ \( (T^{2} - 13)^{2} \) Copy content Toggle raw display
$61$ \( (T^{2} + 52)^{2} \) Copy content Toggle raw display
$67$ \( (T + 10)^{4} \) Copy content Toggle raw display
$71$ \( (T^{2} - 52)^{2} \) Copy content Toggle raw display
$73$ \( (T^{2} + 52)^{2} \) Copy content Toggle raw display
$79$ \( (T^{2} + 208)^{2} \) Copy content Toggle raw display
$83$ \( (T^{2} - 208)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} + 100)^{2} \) Copy content Toggle raw display
$97$ \( (T^{2} + 208)^{2} \) Copy content Toggle raw display
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