Properties

Label 2.56.a.b
Level $2$
Weight $56$
Character orbit 2.a
Self dual yes
Analytic conductor $38.316$
Analytic rank $0$
Dimension $3$
CM no
Inner twists $1$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2,56,Mod(1,2)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2, base_ring=CyclotomicField(1))
 
chi = DirichletCharacter(H, H._module([]))
 
N = Newforms(chi, 56, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2.1");
 
S:= CuspForms(chi, 56);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2 \)
Weight: \( k \) \(=\) \( 56 \)
Character orbit: \([\chi]\) \(=\) 2.a (trivial)

Newform invariants

comment: select newform
 
sage: f = N[0] # Warning: the index may be different
 
gp: f = lf[1] \\ Warning: the index may be different
 
Self dual: yes
Analytic conductor: \(38.3162935370\)
Analytic rank: \(0\)
Dimension: \(3\)
Coefficient field: \(\mathbb{Q}[x]/(x^{3} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{3} - x^{2} - 9638486409249116938x + 5032749353671885590018834040 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{22}\cdot 3^{6}\cdot 5^{3}\cdot 11 \)
Twist minimal: yes
Fricke sign: \(1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-expansion

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

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

\(f(q)\) \(=\) \( q - 134217728 q^{2} + ( - \beta_1 + 1035669549772) q^{3} + 18\!\cdots\!84 q^{4}+ \cdots + (98954730 \beta_{2} + \cdots + 19\!\cdots\!77) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - 134217728 q^{2} + ( - \beta_1 + 1035669549772) q^{3} + 18\!\cdots\!84 q^{4}+ \cdots + (21\!\cdots\!40 \beta_{2} + \cdots + 18\!\cdots\!44) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q - 402653184 q^{2} + 3107008649316 q^{3} + 54\!\cdots\!52 q^{4}+ \cdots + 58\!\cdots\!31 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 3 q - 402653184 q^{2} + 3107008649316 q^{3} + 54\!\cdots\!52 q^{4}+ \cdots + 55\!\cdots\!32 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{3} - x^{2} - 9638486409249116938x + 5032749353671885590018834040 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 640\nu^{2} + 857514869760\nu - 4112420868232128183680 ) / 143886491 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -30142080\nu^{2} + 117149300824366080\nu + 193682685578616648184959360 ) / 143886491 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{2} + 47097\beta _1 + 364953600 ) / 1094860800 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( -55827791\beta_{2} + 7626907605753\beta _1 + 293133359467211543627212800 ) / 45619200 \) Copy content Toggle raw display

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.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
2.80022e9
−3.33856e9
5.38338e8
−1.34218e8 −2.19490e13 1.80144e16 1.96436e19 2.94595e21 3.30259e23 −2.41785e24 3.07310e26 −2.63652e27
1.2 −1.34218e8 −6.32966e10 1.80144e16 −1.92471e19 8.49553e18 −8.70955e22 −2.41785e24 −1.74445e26 2.58331e27
1.3 −1.34218e8 2.51193e13 1.80144e16 1.98512e19 −3.37146e21 3.18308e22 −2.41785e24 4.56531e26 −2.66439e27
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(1\)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2.56.a.b 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2.56.a.b 3 1.a even 1 1 trivial

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{3} - 3107008649316T_{3}^{2} - 551544670455362719563040848T_{3} - 34898202603313072418721305018586426048 \) acting on \(S_{56}^{\mathrm{new}}(\Gamma_0(2))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T + 134217728)^{3} \) Copy content Toggle raw display
$3$ \( T^{3} + \cdots - 34\!\cdots\!48 \) Copy content Toggle raw display
$5$ \( T^{3} + \cdots + 75\!\cdots\!00 \) Copy content Toggle raw display
$7$ \( T^{3} + \cdots + 91\!\cdots\!04 \) Copy content Toggle raw display
$11$ \( T^{3} + \cdots - 86\!\cdots\!48 \) Copy content Toggle raw display
$13$ \( T^{3} + \cdots - 84\!\cdots\!08 \) Copy content Toggle raw display
$17$ \( T^{3} + \cdots - 19\!\cdots\!76 \) Copy content Toggle raw display
$19$ \( T^{3} + \cdots - 30\!\cdots\!00 \) Copy content Toggle raw display
$23$ \( T^{3} + \cdots + 70\!\cdots\!12 \) Copy content Toggle raw display
$29$ \( T^{3} + \cdots - 18\!\cdots\!00 \) Copy content Toggle raw display
$31$ \( T^{3} + \cdots - 28\!\cdots\!88 \) Copy content Toggle raw display
$37$ \( T^{3} + \cdots + 57\!\cdots\!44 \) Copy content Toggle raw display
$41$ \( T^{3} + \cdots + 38\!\cdots\!72 \) Copy content Toggle raw display
$43$ \( T^{3} + \cdots - 59\!\cdots\!08 \) Copy content Toggle raw display
$47$ \( T^{3} + \cdots - 24\!\cdots\!56 \) Copy content Toggle raw display
$53$ \( T^{3} + \cdots - 98\!\cdots\!88 \) Copy content Toggle raw display
$59$ \( T^{3} + \cdots - 94\!\cdots\!00 \) Copy content Toggle raw display
$61$ \( T^{3} + \cdots + 18\!\cdots\!32 \) Copy content Toggle raw display
$67$ \( T^{3} + \cdots + 17\!\cdots\!04 \) Copy content Toggle raw display
$71$ \( T^{3} + \cdots + 37\!\cdots\!32 \) Copy content Toggle raw display
$73$ \( T^{3} + \cdots - 63\!\cdots\!28 \) Copy content Toggle raw display
$79$ \( T^{3} + \cdots - 47\!\cdots\!00 \) Copy content Toggle raw display
$83$ \( T^{3} + \cdots - 25\!\cdots\!68 \) Copy content Toggle raw display
$89$ \( T^{3} + \cdots - 72\!\cdots\!00 \) Copy content Toggle raw display
$97$ \( T^{3} + \cdots - 30\!\cdots\!76 \) Copy content Toggle raw display
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