Properties

Label 490.2.i.e
Level $490$
Weight $2$
Character orbit 490.i
Analytic conductor $3.913$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [490,2,Mod(79,490)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(490, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([3, 2]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("490.79");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 490 = 2 \cdot 5 \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 490.i (of order \(6\), degree \(2\), not minimal)

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: no
Analytic conductor: \(3.91266969904\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(4\) over \(\Q(\zeta_{6})\)
Coefficient field: \(\Q(\zeta_{24})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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 primitive root of unity \(\zeta_{24}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \zeta_{24}^{2} q^{2} + (\zeta_{24}^{7} - \zeta_{24}) q^{3} + \zeta_{24}^{4} q^{4} + (2 \zeta_{24}^{7} + \cdots - 2 \zeta_{24}^{3}) q^{5}+ \cdots + (\zeta_{24}^{4} - 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \zeta_{24}^{2} q^{2} + (\zeta_{24}^{7} - \zeta_{24}) q^{3} + \zeta_{24}^{4} q^{4} + (2 \zeta_{24}^{7} + \cdots - 2 \zeta_{24}^{3}) q^{5}+ \cdots + ( - \zeta_{24}^{7} + \cdots + \zeta_{24}^{3}) q^{96}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 4 q^{4} - 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 4 q^{4} - 4 q^{9} + 8 q^{15} - 4 q^{16} - 16 q^{25} - 48 q^{29} + 12 q^{30} - 8 q^{36} + 24 q^{39} - 24 q^{46} + 24 q^{50} + 32 q^{51} + 4 q^{60} - 8 q^{64} - 12 q^{65} + 48 q^{71} + 24 q^{74} - 40 q^{79} + 20 q^{81} + 32 q^{85} - 48 q^{86} - 36 q^{95}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/490\mathbb{Z}\right)^\times\).

\(n\) \(101\) \(197\)
\(\chi(n)\) \(-1 + \zeta_{24}^{4}\) \(-1\)

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.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
79.1
0.258819 0.965926i
−0.258819 + 0.965926i
0.965926 + 0.258819i
−0.965926 0.258819i
0.258819 + 0.965926i
−0.258819 0.965926i
0.965926 0.258819i
−0.965926 + 0.258819i
−0.866025 0.500000i −1.22474 + 0.707107i 0.500000 + 0.866025i 0.448288 2.19067i 1.41421 0 1.00000i −0.500000 + 0.866025i −1.48356 + 1.67303i
79.2 −0.866025 0.500000i 1.22474 0.707107i 0.500000 + 0.866025i −0.448288 + 2.19067i −1.41421 0 1.00000i −0.500000 + 0.866025i 1.48356 1.67303i
79.3 0.866025 + 0.500000i −1.22474 + 0.707107i 0.500000 + 0.866025i −1.67303 + 1.48356i −1.41421 0 1.00000i −0.500000 + 0.866025i −2.19067 + 0.448288i
79.4 0.866025 + 0.500000i 1.22474 0.707107i 0.500000 + 0.866025i 1.67303 1.48356i 1.41421 0 1.00000i −0.500000 + 0.866025i 2.19067 0.448288i
459.1 −0.866025 + 0.500000i −1.22474 0.707107i 0.500000 0.866025i 0.448288 + 2.19067i 1.41421 0 1.00000i −0.500000 0.866025i −1.48356 1.67303i
459.2 −0.866025 + 0.500000i 1.22474 + 0.707107i 0.500000 0.866025i −0.448288 2.19067i −1.41421 0 1.00000i −0.500000 0.866025i 1.48356 + 1.67303i
459.3 0.866025 0.500000i −1.22474 0.707107i 0.500000 0.866025i −1.67303 1.48356i −1.41421 0 1.00000i −0.500000 0.866025i −2.19067 0.448288i
459.4 0.866025 0.500000i 1.22474 + 0.707107i 0.500000 0.866025i 1.67303 + 1.48356i 1.41421 0 1.00000i −0.500000 0.866025i 2.19067 + 0.448288i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 79.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
5.b even 2 1 inner
7.b odd 2 1 inner
7.c even 3 1 inner
7.d odd 6 1 inner
35.c odd 2 1 inner
35.i odd 6 1 inner
35.j even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 490.2.i.e 8
5.b even 2 1 inner 490.2.i.e 8
7.b odd 2 1 inner 490.2.i.e 8
7.c even 3 1 490.2.c.f 4
7.c even 3 1 inner 490.2.i.e 8
7.d odd 6 1 490.2.c.f 4
7.d odd 6 1 inner 490.2.i.e 8
35.c odd 2 1 inner 490.2.i.e 8
35.i odd 6 1 490.2.c.f 4
35.i odd 6 1 inner 490.2.i.e 8
35.j even 6 1 490.2.c.f 4
35.j even 6 1 inner 490.2.i.e 8
35.k even 12 1 2450.2.a.bk 2
35.k even 12 1 2450.2.a.bp 2
35.l odd 12 1 2450.2.a.bk 2
35.l odd 12 1 2450.2.a.bp 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
490.2.c.f 4 7.c even 3 1
490.2.c.f 4 7.d odd 6 1
490.2.c.f 4 35.i odd 6 1
490.2.c.f 4 35.j even 6 1
490.2.i.e 8 1.a even 1 1 trivial
490.2.i.e 8 5.b even 2 1 inner
490.2.i.e 8 7.b odd 2 1 inner
490.2.i.e 8 7.c even 3 1 inner
490.2.i.e 8 7.d odd 6 1 inner
490.2.i.e 8 35.c odd 2 1 inner
490.2.i.e 8 35.i odd 6 1 inner
490.2.i.e 8 35.j even 6 1 inner
2450.2.a.bk 2 35.k even 12 1
2450.2.a.bk 2 35.l odd 12 1
2450.2.a.bp 2 35.k even 12 1
2450.2.a.bp 2 35.l odd 12 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(490, [\chi])\):

\( T_{3}^{4} - 2T_{3}^{2} + 4 \) Copy content Toggle raw display
\( T_{11} \) Copy content Toggle raw display
\( T_{19}^{4} + 18T_{19}^{2} + 324 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{4} - T^{2} + 1)^{2} \) Copy content Toggle raw display
$3$ \( (T^{4} - 2 T^{2} + 4)^{2} \) Copy content Toggle raw display
$5$ \( T^{8} + 8 T^{6} + \cdots + 625 \) Copy content Toggle raw display
$7$ \( T^{8} \) Copy content Toggle raw display
$11$ \( T^{8} \) Copy content Toggle raw display
$13$ \( (T^{2} + 18)^{4} \) Copy content Toggle raw display
$17$ \( (T^{4} - 32 T^{2} + 1024)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} + 18 T^{2} + 324)^{2} \) Copy content Toggle raw display
$23$ \( (T^{4} - 36 T^{2} + 1296)^{2} \) Copy content Toggle raw display
$29$ \( (T + 6)^{8} \) Copy content Toggle raw display
$31$ \( (T^{4} + 72 T^{2} + 5184)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} - 36 T^{2} + 1296)^{2} \) Copy content Toggle raw display
$41$ \( (T^{2} - 72)^{4} \) Copy content Toggle raw display
$43$ \( (T^{2} + 144)^{4} \) Copy content Toggle raw display
$47$ \( (T^{4} - 8 T^{2} + 64)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} - 36 T^{2} + 1296)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} + 18 T^{2} + 324)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + 18 T^{2} + 324)^{2} \) Copy content Toggle raw display
$67$ \( T^{8} \) Copy content Toggle raw display
$71$ \( (T - 6)^{8} \) Copy content Toggle raw display
$73$ \( (T^{4} - 72 T^{2} + 5184)^{2} \) Copy content Toggle raw display
$79$ \( (T^{2} + 10 T + 100)^{4} \) Copy content Toggle raw display
$83$ \( (T^{2} + 242)^{4} \) Copy content Toggle raw display
$89$ \( T^{8} \) Copy content Toggle raw display
$97$ \( T^{8} \) Copy content Toggle raw display
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