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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [288,7,Mod(161,288)] 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("288.161"); S:= CuspForms(chi, 7); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(288, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 1])) N = Newforms(chi, 7, names="a")
 
Level: \( N \) \(=\) \( 288 = 2^{5} \cdot 3^{2} \)
Weight: \( k \) \(=\) \( 7 \)
Character orbit: \([\chi]\) \(=\) 288.e (of order \(2\), degree \(1\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4,0,0,0,0,0,0,0,0,0,0,0,2016] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(13)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(66.2555760825\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\sqrt{-2}, \sqrt{3})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 4x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{9}\cdot 3^{4} \)
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.

\(f(q)\) \(=\) \( q - 55 \beta_1 q^{5} - \beta_{3} q^{7} + 7 \beta_{2} q^{11} + 504 q^{13} - 1961 \beta_1 q^{17} + 28 \beta_{3} q^{19} - 35 \beta_{2} q^{23} + 9575 q^{25} - 15065 \beta_1 q^{29} - 21 \beta_{3} q^{31} + 55 \beta_{2} q^{35}+ \cdots - 1527120 q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + 2016 q^{13} + 38300 q^{25} - 151208 q^{37} - 221764 q^{49} - 1175320 q^{61} - 1556352 q^{73} - 862840 q^{85} - 6108480 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 4x^{2} + 1 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu^{3} + 3\nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( 144\nu^{3} + 720\nu \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( 144\nu^{2} + 288 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{2} - 144\beta_1 ) / 288 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{3} - 288 ) / 144 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -\beta_{2} + 240\beta_1 ) / 96 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/288\mathbb{Z}\right)^\times\).

\(n\) \(37\) \(65\) \(127\)
\(\chi(n)\) \(1\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
161.1
0.517638i
1.93185i
0.517638i
1.93185i
0 0 0 77.7817i 0 −249.415 0 0 0
161.2 0 0 0 77.7817i 0 249.415 0 0 0
161.3 0 0 0 77.7817i 0 −249.415 0 0 0
161.4 0 0 0 77.7817i 0 249.415 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
4.b odd 2 1 inner
12.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 288.7.e.g 4
3.b odd 2 1 inner 288.7.e.g 4
4.b odd 2 1 inner 288.7.e.g 4
8.b even 2 1 576.7.e.o 4
8.d odd 2 1 576.7.e.o 4
12.b even 2 1 inner 288.7.e.g 4
24.f even 2 1 576.7.e.o 4
24.h odd 2 1 576.7.e.o 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
288.7.e.g 4 1.a even 1 1 trivial
288.7.e.g 4 3.b odd 2 1 inner
288.7.e.g 4 4.b odd 2 1 inner
288.7.e.g 4 12.b even 2 1 inner
576.7.e.o 4 8.b even 2 1
576.7.e.o 4 8.d odd 2 1
576.7.e.o 4 24.f even 2 1
576.7.e.o 4 24.h odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{7}^{\mathrm{new}}(288, [\chi])\):

\( T_{5}^{2} + 6050 \) Copy content Toggle raw display
\( T_{7}^{2} - 62208 \) 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
$5$ \( (T^{2} + 6050)^{2} \) Copy content Toggle raw display
$7$ \( (T^{2} - 62208)^{2} \) Copy content Toggle raw display
$11$ \( (T^{2} + 6096384)^{2} \) Copy content Toggle raw display
$13$ \( (T - 504)^{4} \) Copy content Toggle raw display
$17$ \( (T^{2} + 7691042)^{2} \) Copy content Toggle raw display
$19$ \( (T^{2} - 48771072)^{2} \) Copy content Toggle raw display
$23$ \( (T^{2} + 152409600)^{2} \) Copy content Toggle raw display
$29$ \( (T^{2} + 453908450)^{2} \) Copy content Toggle raw display
$31$ \( (T^{2} - 27433728)^{2} \) Copy content Toggle raw display
$37$ \( (T + 37802)^{4} \) Copy content Toggle raw display
$41$ \( (T^{2} + 691399298)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} - 11717250048)^{2} \) Copy content Toggle raw display
$47$ \( (T^{2} + 298722816)^{2} \) Copy content Toggle raw display
$53$ \( (T^{2} + 2009399618)^{2} \) Copy content Toggle raw display
$59$ \( (T^{2} + 23434500096)^{2} \) Copy content Toggle raw display
$61$ \( (T + 293830)^{4} \) Copy content Toggle raw display
$67$ \( (T^{2} - 139595000832)^{2} \) Copy content Toggle raw display
$71$ \( (T^{2} + 25757222400)^{2} \) Copy content Toggle raw display
$73$ \( (T + 389088)^{4} \) Copy content Toggle raw display
$79$ \( (T^{2} - 918728116992)^{2} \) Copy content Toggle raw display
$83$ \( (T^{2} + 241422902784)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} + 850810554722)^{2} \) Copy content Toggle raw display
$97$ \( (T + 1527120)^{4} \) Copy content Toggle raw display
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