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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [504,3,Mod(449,504)] 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("504.449"); S:= CuspForms(chi, 3); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(504, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 1, 0])) N = Newforms(chi, 3, names="a")
 
Level: \( N \) \(=\) \( 504 = 2^{3} \cdot 3^{2} \cdot 7 \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 504.d (of order \(2\), degree \(1\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(1)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(13.7330053238\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\sqrt{-2}, \sqrt{7})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 8x^{2} + 9 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2 \)
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.

\(f(q)\) \(=\) \( q + (\beta_{2} - 3 \beta_1) q^{5} - \beta_{3} q^{7} + (2 \beta_{2} - \beta_1) q^{11} + (4 \beta_{3} - 2) q^{13} + (\beta_{2} - \beta_1) q^{17} + (2 \beta_{3} + 6) q^{19} + (2 \beta_{2} + 13 \beta_1) q^{23}+ \cdots + (10 \beta_{3} - 40) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 8 q^{13} + 24 q^{19} - 28 q^{25} + 72 q^{31} - 64 q^{37} - 112 q^{43} + 28 q^{49} - 136 q^{55} + 80 q^{61} + 136 q^{67} + 400 q^{73} - 56 q^{79} - 80 q^{85} - 112 q^{91} - 160 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 8x^{2} + 9 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{3} + 5\nu ) / 3 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{3} + 11\nu ) / 3 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( \nu^{2} + 4 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{2} - \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{3} - 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -5\beta_{2} + 11\beta_1 ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/504\mathbb{Z}\right)^\times\).

\(n\) \(73\) \(127\) \(253\) \(281\)
\(\chi(n)\) \(1\) \(1\) \(1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
449.1
2.57794i
1.16372i
1.16372i
2.57794i
0 0 0 7.98430i 0 2.64575 0 0 0
449.2 0 0 0 0.500983i 0 −2.64575 0 0 0
449.3 0 0 0 0.500983i 0 −2.64575 0 0 0
449.4 0 0 0 7.98430i 0 2.64575 0 0 0
\(n\): 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

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 504.3.d.a 4
3.b odd 2 1 inner 504.3.d.a 4
4.b odd 2 1 1008.3.d.b 4
7.b odd 2 1 3528.3.d.d 4
8.b even 2 1 4032.3.d.f 4
8.d odd 2 1 4032.3.d.g 4
12.b even 2 1 1008.3.d.b 4
21.c even 2 1 3528.3.d.d 4
24.f even 2 1 4032.3.d.g 4
24.h odd 2 1 4032.3.d.f 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
504.3.d.a 4 1.a even 1 1 trivial
504.3.d.a 4 3.b odd 2 1 inner
1008.3.d.b 4 4.b odd 2 1
1008.3.d.b 4 12.b even 2 1
3528.3.d.d 4 7.b odd 2 1
3528.3.d.d 4 21.c even 2 1
4032.3.d.f 4 8.b even 2 1
4032.3.d.f 4 24.h odd 2 1
4032.3.d.g 4 8.d odd 2 1
4032.3.d.g 4 24.f even 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{4} + 64T_{5}^{2} + 16 \) acting on \(S_{3}^{\mathrm{new}}(504, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} \) Copy content Toggle raw display
$5$ \( T^{4} + 64T^{2} + 16 \) Copy content Toggle raw display
$7$ \( (T^{2} - 7)^{2} \) Copy content Toggle raw display
$11$ \( T^{4} + 116T^{2} + 2916 \) Copy content Toggle raw display
$13$ \( (T^{2} + 4 T - 108)^{2} \) Copy content Toggle raw display
$17$ \( T^{4} + 32T^{2} + 144 \) Copy content Toggle raw display
$19$ \( (T^{2} - 12 T + 8)^{2} \) Copy content Toggle raw display
$23$ \( T^{4} + 788 T^{2} + 79524 \) Copy content Toggle raw display
$29$ \( T^{4} + 116T^{2} + 2916 \) Copy content Toggle raw display
$31$ \( (T^{2} - 36 T + 296)^{2} \) Copy content Toggle raw display
$37$ \( (T^{2} + 32 T - 2544)^{2} \) Copy content Toggle raw display
$41$ \( T^{4} + 3712 T^{2} + 169744 \) Copy content Toggle raw display
$43$ \( (T^{2} + 56 T - 224)^{2} \) Copy content Toggle raw display
$47$ \( T^{4} + 9136 T^{2} + 20286016 \) Copy content Toggle raw display
$53$ \( T^{4} + 5156 T^{2} + 617796 \) Copy content Toggle raw display
$59$ \( T^{4} + 9648 T^{2} + 18045504 \) Copy content Toggle raw display
$61$ \( (T^{2} - 40 T - 300)^{2} \) Copy content Toggle raw display
$67$ \( (T^{2} - 68 T - 1644)^{2} \) Copy content Toggle raw display
$71$ \( T^{4} + 2900 T^{2} + 1822500 \) Copy content Toggle raw display
$73$ \( (T^{2} - 200 T + 9748)^{2} \) Copy content Toggle raw display
$79$ \( (T + 14)^{4} \) Copy content Toggle raw display
$83$ \( T^{4} + 23552 T^{2} + 51151104 \) Copy content Toggle raw display
$89$ \( T^{4} + 10592 T^{2} + 7817616 \) Copy content Toggle raw display
$97$ \( (T^{2} + 80 T + 900)^{2} \) Copy content Toggle raw display
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