Properties

Label 2.84.a.b
Level $2$
Weight $84$
Character orbit 2.a
Self dual yes
Analytic conductor $87.254$
Analytic rank $1$
Dimension $3$
CM no
Inner twists $1$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2,84,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, 84, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2.1");
 
S:= CuspForms(chi, 84);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2 \)
Weight: \( k \) \(=\) \( 84 \)
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: \(87.2544256533\)
Analytic rank: \(1\)
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: \( x^{3} - x^{2} - 76392209863211857938006422774x + 4214151671129618412000783695211690286445664 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{24}\cdot 3^{11}\cdot 5^{2}\cdot 7 \)
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.

\(f(q)\) \(=\) \( q + 2199023255552 q^{2} + ( - \beta_1 - 56\!\cdots\!08) q^{3}+ \cdots + (56303458286490 \beta_{2} + \cdots + 96\!\cdots\!37) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + 2199023255552 q^{2} + ( - \beta_1 - 56\!\cdots\!08) q^{3}+ \cdots + ( - 28\!\cdots\!80 \beta_{2} + \cdots - 30\!\cdots\!56) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q + 6597069766656 q^{2} - 16\!\cdots\!24 q^{3}+ \cdots + 29\!\cdots\!11 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 3 q + 6597069766656 q^{2} - 16\!\cdots\!24 q^{3}+ \cdots - 90\!\cdots\!68 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{3} - x^{2} - 76392209863211857938006422774x + 4214151671129618412000783695211690286445664 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( 311040\nu - 103680 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 163840\nu^{2} + 13557284114987572480\nu - 8344066442659091722136686534106880 ) / 95350401 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta _1 + 103680 ) / 311040 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 23170147443\beta_{2} - 10591628214834041\beta _1 + 2027608145566158190339201513794600960 ) / 39813120 \) 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
2.43002e14
5.76762e13
−3.00679e14
2.19902e12 −8.12053e19 4.83570e24 −9.96318e28 −1.78572e32 −5.66053e34 1.06338e37 2.60347e39 −2.19093e41
1.2 2.19902e12 −2.35615e19 4.83570e24 9.47163e28 −5.18122e31 1.10671e35 1.06338e37 −3.43570e39 2.08283e41
1.3 2.19902e12 8.79012e19 4.83570e24 −8.42086e28 1.93297e32 1.88466e34 1.06338e37 3.73579e39 −1.85177e41
\(n\): 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 2.84.a.b 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2.84.a.b 3 1.a even 1 1 trivial

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{3} + \cdots - 16\!\cdots\!88 \) acting on \(S_{84}^{\mathrm{new}}(\Gamma_0(2))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T - 2199023255552)^{3} \) Copy content Toggle raw display
$3$ \( T^{3} + \cdots - 16\!\cdots\!88 \) Copy content Toggle raw display
$5$ \( T^{3} + \cdots - 79\!\cdots\!00 \) Copy content Toggle raw display
$7$ \( T^{3} + \cdots + 11\!\cdots\!64 \) Copy content Toggle raw display
$11$ \( T^{3} + \cdots + 54\!\cdots\!72 \) Copy content Toggle raw display
$13$ \( T^{3} + \cdots - 80\!\cdots\!88 \) Copy content Toggle raw display
$17$ \( T^{3} + \cdots + 58\!\cdots\!04 \) Copy content Toggle raw display
$19$ \( T^{3} + \cdots + 29\!\cdots\!00 \) Copy content Toggle raw display
$23$ \( T^{3} + \cdots - 75\!\cdots\!68 \) Copy content Toggle raw display
$29$ \( T^{3} + \cdots + 49\!\cdots\!00 \) Copy content Toggle raw display
$31$ \( T^{3} + \cdots - 11\!\cdots\!08 \) Copy content Toggle raw display
$37$ \( T^{3} + \cdots - 27\!\cdots\!96 \) Copy content Toggle raw display
$41$ \( T^{3} + \cdots + 97\!\cdots\!72 \) Copy content Toggle raw display
$43$ \( T^{3} + \cdots + 10\!\cdots\!32 \) Copy content Toggle raw display
$47$ \( T^{3} + \cdots - 33\!\cdots\!36 \) Copy content Toggle raw display
$53$ \( T^{3} + \cdots + 47\!\cdots\!52 \) Copy content Toggle raw display
$59$ \( T^{3} + \cdots + 15\!\cdots\!00 \) Copy content Toggle raw display
$61$ \( T^{3} + \cdots - 11\!\cdots\!08 \) Copy content Toggle raw display
$67$ \( T^{3} + \cdots + 15\!\cdots\!24 \) Copy content Toggle raw display
$71$ \( T^{3} + \cdots - 16\!\cdots\!68 \) Copy content Toggle raw display
$73$ \( T^{3} + \cdots - 15\!\cdots\!28 \) Copy content Toggle raw display
$79$ \( T^{3} + \cdots - 58\!\cdots\!00 \) Copy content Toggle raw display
$83$ \( T^{3} + \cdots - 79\!\cdots\!48 \) Copy content Toggle raw display
$89$ \( T^{3} + \cdots + 72\!\cdots\!00 \) Copy content Toggle raw display
$97$ \( T^{3} + \cdots - 76\!\cdots\!16 \) Copy content Toggle raw display
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