Properties

Label 490.2.l.b
Level $490$
Weight $2$
Character orbit 490.l
Analytic conductor $3.913$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $8$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [490,2,Mod(117,490)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(490, base_ring=CyclotomicField(12))
 
chi = DirichletCharacter(H, H._module([3, 10]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("490.117");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 490 = 2 \cdot 5 \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 490.l (of order \(12\), degree \(4\), 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: \(16\)
Relative dimension: \(4\) over \(\Q(\zeta_{12})\)
Coefficient field: \(\Q(\zeta_{48})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - x^{8} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{12}]$

$q$-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 \(\zeta_{48}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \zeta_{48}^{14} q^{2} + ( - \zeta_{48}^{13} + \cdots - \zeta_{48}) q^{3}+ \cdots + (2 \zeta_{48}^{14} + \cdots - 2 \zeta_{48}^{2}) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \zeta_{48}^{14} q^{2} + ( - \zeta_{48}^{13} + \cdots - \zeta_{48}) q^{3}+ \cdots + (6 \zeta_{48}^{12} + \cdots - 2 \zeta_{48}^{2}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q+O(q^{10}) \) Copy content Toggle raw display \( 16 q + 16 q^{11} + 48 q^{15} + 8 q^{16} + 16 q^{18} + 32 q^{22} + 16 q^{23} + 8 q^{30} - 16 q^{36} - 16 q^{37} - 96 q^{43} - 16 q^{46} + 64 q^{50} - 80 q^{51} + 8 q^{53} - 96 q^{57} + 24 q^{58} + 8 q^{60} + 64 q^{65} - 48 q^{67} - 32 q^{71} + 16 q^{72} + 64 q^{78} - 24 q^{81} + 16 q^{85} + 16 q^{86} + 16 q^{88} - 32 q^{92} - 32 q^{93} + 72 q^{95}+O(q^{100}) \) Copy content Toggle raw display

Character values

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

\(n\) \(101\) \(197\)
\(\chi(n)\) \(\zeta_{48}^{8}\) \(\zeta_{48}^{12}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
117.1
−0.793353 0.608761i
0.793353 + 0.608761i
0.608761 0.793353i
−0.608761 + 0.793353i
0.991445 + 0.130526i
−0.991445 0.130526i
0.130526 0.991445i
−0.130526 + 0.991445i
0.991445 0.130526i
−0.991445 + 0.130526i
0.130526 + 0.991445i
−0.130526 0.991445i
−0.793353 + 0.608761i
0.793353 0.608761i
0.608761 + 0.793353i
−0.608761 0.793353i
−0.965926 + 0.258819i −0.676327 + 2.52409i 0.866025 0.500000i 0.977945 2.01088i 2.61313i 0 −0.707107 + 0.707107i −3.31552 1.91421i −0.424170 + 2.19547i
117.2 −0.965926 + 0.258819i 0.676327 2.52409i 0.866025 0.500000i −0.977945 + 2.01088i 2.61313i 0 −0.707107 + 0.707107i −3.31552 1.91421i 0.424170 2.19547i
117.3 0.965926 0.258819i −0.280144 + 1.04551i 0.866025 0.500000i −2.01088 0.977945i 1.08239i 0 0.707107 0.707107i 1.58346 + 0.914214i −2.19547 0.424170i
117.4 0.965926 0.258819i 0.280144 1.04551i 0.866025 0.500000i 2.01088 + 0.977945i 1.08239i 0 0.707107 0.707107i 1.58346 + 0.914214i 2.19547 + 0.424170i
227.1 −0.258819 + 0.965926i −1.04551 + 0.280144i −0.866025 0.500000i −1.85236 + 1.25250i 1.08239i 0 0.707107 0.707107i −1.58346 + 0.914214i −0.730392 2.11342i
227.2 −0.258819 + 0.965926i 1.04551 0.280144i −0.866025 0.500000i 1.85236 1.25250i 1.08239i 0 0.707107 0.707107i −1.58346 + 0.914214i 0.730392 + 2.11342i
227.3 0.258819 0.965926i −2.52409 + 0.676327i −0.866025 0.500000i −1.25250 1.85236i 2.61313i 0 −0.707107 + 0.707107i 3.31552 1.91421i −2.11342 + 0.730392i
227.4 0.258819 0.965926i 2.52409 0.676327i −0.866025 0.500000i 1.25250 + 1.85236i 2.61313i 0 −0.707107 + 0.707107i 3.31552 1.91421i 2.11342 0.730392i
313.1 −0.258819 0.965926i −1.04551 0.280144i −0.866025 + 0.500000i −1.85236 1.25250i 1.08239i 0 0.707107 + 0.707107i −1.58346 0.914214i −0.730392 + 2.11342i
313.2 −0.258819 0.965926i 1.04551 + 0.280144i −0.866025 + 0.500000i 1.85236 + 1.25250i 1.08239i 0 0.707107 + 0.707107i −1.58346 0.914214i 0.730392 2.11342i
313.3 0.258819 + 0.965926i −2.52409 0.676327i −0.866025 + 0.500000i −1.25250 + 1.85236i 2.61313i 0 −0.707107 0.707107i 3.31552 + 1.91421i −2.11342 0.730392i
313.4 0.258819 + 0.965926i 2.52409 + 0.676327i −0.866025 + 0.500000i 1.25250 1.85236i 2.61313i 0 −0.707107 0.707107i 3.31552 + 1.91421i 2.11342 + 0.730392i
423.1 −0.965926 0.258819i −0.676327 2.52409i 0.866025 + 0.500000i 0.977945 + 2.01088i 2.61313i 0 −0.707107 0.707107i −3.31552 + 1.91421i −0.424170 2.19547i
423.2 −0.965926 0.258819i 0.676327 + 2.52409i 0.866025 + 0.500000i −0.977945 2.01088i 2.61313i 0 −0.707107 0.707107i −3.31552 + 1.91421i 0.424170 + 2.19547i
423.3 0.965926 + 0.258819i −0.280144 1.04551i 0.866025 + 0.500000i −2.01088 + 0.977945i 1.08239i 0 0.707107 + 0.707107i 1.58346 0.914214i −2.19547 + 0.424170i
423.4 0.965926 + 0.258819i 0.280144 + 1.04551i 0.866025 + 0.500000i 2.01088 0.977945i 1.08239i 0 0.707107 + 0.707107i 1.58346 0.914214i 2.19547 0.424170i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 117.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
5.c odd 4 1 inner
7.b odd 2 1 inner
7.c even 3 1 inner
7.d odd 6 1 inner
35.f even 4 1 inner
35.k even 12 1 inner
35.l odd 12 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 490.2.l.b 16
5.c odd 4 1 inner 490.2.l.b 16
7.b odd 2 1 inner 490.2.l.b 16
7.c even 3 1 490.2.g.a 8
7.c even 3 1 inner 490.2.l.b 16
7.d odd 6 1 490.2.g.a 8
7.d odd 6 1 inner 490.2.l.b 16
35.f even 4 1 inner 490.2.l.b 16
35.k even 12 1 490.2.g.a 8
35.k even 12 1 inner 490.2.l.b 16
35.l odd 12 1 490.2.g.a 8
35.l odd 12 1 inner 490.2.l.b 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
490.2.g.a 8 7.c even 3 1
490.2.g.a 8 7.d odd 6 1
490.2.g.a 8 35.k even 12 1
490.2.g.a 8 35.l odd 12 1
490.2.l.b 16 1.a even 1 1 trivial
490.2.l.b 16 5.c odd 4 1 inner
490.2.l.b 16 7.b odd 2 1 inner
490.2.l.b 16 7.c even 3 1 inner
490.2.l.b 16 7.d odd 6 1 inner
490.2.l.b 16 35.f even 4 1 inner
490.2.l.b 16 35.k even 12 1 inner
490.2.l.b 16 35.l odd 12 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{16} - 48T_{3}^{12} + 2240T_{3}^{8} - 3072T_{3}^{4} + 4096 \) acting on \(S_{2}^{\mathrm{new}}(490, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{8} - T^{4} + 1)^{2} \) Copy content Toggle raw display
$3$ \( T^{16} - 48 T^{12} + \cdots + 4096 \) Copy content Toggle raw display
$5$ \( T^{16} + 48 T^{12} + \cdots + 390625 \) Copy content Toggle raw display
$7$ \( T^{16} \) Copy content Toggle raw display
$11$ \( (T^{4} - 4 T^{3} + 20 T^{2} + \cdots + 16)^{4} \) Copy content Toggle raw display
$13$ \( (T^{8} + 1548 T^{4} + 334084)^{2} \) Copy content Toggle raw display
$17$ \( T^{16} + \cdots + 111612119056 \) Copy content Toggle raw display
$19$ \( (T^{8} + 72 T^{6} + \cdots + 419904)^{2} \) Copy content Toggle raw display
$23$ \( (T^{8} - 8 T^{7} + \cdots + 256)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} + 44 T^{2} + 196)^{4} \) Copy content Toggle raw display
$31$ \( (T^{8} - 16 T^{6} + \cdots + 1024)^{2} \) Copy content Toggle raw display
$37$ \( (T^{8} + 8 T^{7} + \cdots + 4096)^{2} \) Copy content Toggle raw display
$41$ \( (T^{4} + 116 T^{2} + 2)^{4} \) Copy content Toggle raw display
$43$ \( (T^{4} + 24 T^{3} + \cdots + 4624)^{4} \) Copy content Toggle raw display
$47$ \( T^{16} + \cdots + 6044831973376 \) Copy content Toggle raw display
$53$ \( (T^{8} - 4 T^{7} + \cdots + 1336336)^{2} \) Copy content Toggle raw display
$59$ \( (T^{8} + 72 T^{6} + \cdots + 419904)^{2} \) Copy content Toggle raw display
$61$ \( (T^{8} - 52 T^{6} + \cdots + 334084)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} + 12 T^{3} + \cdots + 5184)^{4} \) Copy content Toggle raw display
$71$ \( (T^{2} + 4 T - 68)^{8} \) Copy content Toggle raw display
$73$ \( T^{16} + \cdots + 531726889113616 \) Copy content Toggle raw display
$79$ \( (T^{8} - 264 T^{6} + \cdots + 21381376)^{2} \) Copy content Toggle raw display
$83$ \( (T^{8} + 35376 T^{4} + 5345344)^{2} \) Copy content Toggle raw display
$89$ \( (T^{8} + 340 T^{6} + \cdots + 354117124)^{2} \) Copy content Toggle raw display
$97$ \( (T^{8} + 4428 T^{4} + 9604)^{2} \) Copy content Toggle raw display
show more
show less