Properties

Label 700.2.c.h
Level $700$
Weight $2$
Character orbit 700.c
Analytic conductor $5.590$
Analytic rank $0$
Dimension $8$
CM discriminant -7
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [700,2,Mod(699,700)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(700, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("700.699");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 700 = 2^{2} \cdot 5^{2} \cdot 7 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 700.c (of order \(2\), degree \(1\), 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: \(5.58952814149\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.49787136.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 3x^{6} + 5x^{4} + 12x^{2} + 16 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{2}\cdot 5^{2} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{U}(1)[D_{2}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_1 q^{2} + (\beta_{2} - 1) q^{4} + ( - \beta_{7} + \beta_1) q^{7} + (\beta_{3} - \beta_1) q^{8} + 3 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_1 q^{2} + (\beta_{2} - 1) q^{4} + ( - \beta_{7} + \beta_1) q^{7} + (\beta_{3} - \beta_1) q^{8} + 3 q^{9} + ( - 2 \beta_{6} + 1) q^{11} + (\beta_{6} + \beta_{2} + 1) q^{14} + (\beta_{4} - \beta_{2}) q^{16} + 3 \beta_1 q^{18} + ( - 2 \beta_{7} + 2 \beta_{5} + \beta_1) q^{22} + ( - \beta_{7} + 4 \beta_{5} + \beta_1) q^{23} + (\beta_{7} - \beta_{5} + \beta_{3} + \beta_1) q^{28} + ( - 2 \beta_{6} - 2 \beta_{4} + \cdots - 1) q^{29}+ \cdots + ( - 6 \beta_{6} + 3) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 6 q^{4} + 24 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 6 q^{4} + 24 q^{9} + 14 q^{14} - 2 q^{16} - 8 q^{29} - 18 q^{36} + 22 q^{44} - 10 q^{46} + 56 q^{49} - 28 q^{56} - 36 q^{64} - 78 q^{74} + 72 q^{81} - 50 q^{86}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 3x^{6} + 5x^{4} + 12x^{2} + 16 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{2} + 1 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( \nu^{3} + \nu \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( \nu^{4} + \nu^{2} + 1 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{7} + \nu^{5} - \nu^{3} - 8\nu ) / 8 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( \nu^{6} + \nu^{4} + 3\nu^{2} + 8 ) / 2 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 3\nu^{7} + 5\nu^{5} + 11\nu^{3} + 24\nu ) / 8 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{2} - 1 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{3} - \beta_1 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( \beta_{4} - \beta_{2} \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( \beta_{7} + 3\beta_{5} - \beta_{3} + \beta_1 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( 2\beta_{6} - \beta_{4} - 2\beta_{2} - 5 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( \beta_{7} - 5\beta_{5} - 2\beta_{3} - 6\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/700\mathbb{Z}\right)^\times\).

\(n\) \(101\) \(351\) \(477\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\)

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.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
699.1
−1.09445 0.895644i
−1.09445 + 0.895644i
−0.228425 1.39564i
−0.228425 + 1.39564i
0.228425 1.39564i
0.228425 + 1.39564i
1.09445 0.895644i
1.09445 + 0.895644i
−1.09445 0.895644i 0 0.395644 + 1.96048i 0 0 −2.64575 1.32288 2.50000i 3.00000 0
699.2 −1.09445 + 0.895644i 0 0.395644 1.96048i 0 0 −2.64575 1.32288 + 2.50000i 3.00000 0
699.3 −0.228425 1.39564i 0 −1.89564 + 0.637600i 0 0 −2.64575 1.32288 + 2.50000i 3.00000 0
699.4 −0.228425 + 1.39564i 0 −1.89564 0.637600i 0 0 −2.64575 1.32288 2.50000i 3.00000 0
699.5 0.228425 1.39564i 0 −1.89564 0.637600i 0 0 2.64575 −1.32288 + 2.50000i 3.00000 0
699.6 0.228425 + 1.39564i 0 −1.89564 + 0.637600i 0 0 2.64575 −1.32288 2.50000i 3.00000 0
699.7 1.09445 0.895644i 0 0.395644 1.96048i 0 0 2.64575 −1.32288 2.50000i 3.00000 0
699.8 1.09445 + 0.895644i 0 0.395644 + 1.96048i 0 0 2.64575 −1.32288 + 2.50000i 3.00000 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 699.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.b odd 2 1 CM by \(\Q(\sqrt{-7}) \)
4.b odd 2 1 inner
5.b even 2 1 inner
20.d odd 2 1 inner
28.d even 2 1 inner
35.c odd 2 1 inner
140.c even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 700.2.c.h 8
4.b odd 2 1 inner 700.2.c.h 8
5.b even 2 1 inner 700.2.c.h 8
5.c odd 4 1 700.2.g.c 4
5.c odd 4 1 700.2.g.e yes 4
7.b odd 2 1 CM 700.2.c.h 8
20.d odd 2 1 inner 700.2.c.h 8
20.e even 4 1 700.2.g.c 4
20.e even 4 1 700.2.g.e yes 4
28.d even 2 1 inner 700.2.c.h 8
35.c odd 2 1 inner 700.2.c.h 8
35.f even 4 1 700.2.g.c 4
35.f even 4 1 700.2.g.e yes 4
140.c even 2 1 inner 700.2.c.h 8
140.j odd 4 1 700.2.g.c 4
140.j odd 4 1 700.2.g.e yes 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
700.2.c.h 8 1.a even 1 1 trivial
700.2.c.h 8 4.b odd 2 1 inner
700.2.c.h 8 5.b even 2 1 inner
700.2.c.h 8 7.b odd 2 1 CM
700.2.c.h 8 20.d odd 2 1 inner
700.2.c.h 8 28.d even 2 1 inner
700.2.c.h 8 35.c odd 2 1 inner
700.2.c.h 8 140.c even 2 1 inner
700.2.g.c 4 5.c odd 4 1
700.2.g.c 4 20.e even 4 1
700.2.g.c 4 35.f even 4 1
700.2.g.c 4 140.j odd 4 1
700.2.g.e yes 4 5.c odd 4 1
700.2.g.e yes 4 20.e even 4 1
700.2.g.e yes 4 35.f even 4 1
700.2.g.e yes 4 140.j odd 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(700, [\chi])\):

\( T_{3} \) Copy content Toggle raw display
\( T_{11}^{4} + 38T_{11}^{2} + 25 \) Copy content Toggle raw display
\( T_{13} \) Copy content Toggle raw display
\( T_{19} \) Copy content Toggle raw display
\( T_{23}^{4} - 110T_{23}^{2} + 1681 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} + 3 T^{6} + \cdots + 16 \) Copy content Toggle raw display
$3$ \( T^{8} \) Copy content Toggle raw display
$5$ \( T^{8} \) Copy content Toggle raw display
$7$ \( (T^{2} - 7)^{4} \) Copy content Toggle raw display
$11$ \( (T^{4} + 38 T^{2} + 25)^{2} \) Copy content Toggle raw display
$13$ \( T^{8} \) Copy content Toggle raw display
$17$ \( T^{8} \) Copy content Toggle raw display
$19$ \( T^{8} \) Copy content Toggle raw display
$23$ \( (T^{4} - 110 T^{2} + 1681)^{2} \) Copy content Toggle raw display
$29$ \( (T^{2} + 2 T - 83)^{4} \) Copy content Toggle raw display
$31$ \( T^{8} \) Copy content Toggle raw display
$37$ \( (T^{4} + 186 T^{2} + 5625)^{2} \) Copy content Toggle raw display
$41$ \( T^{8} \) Copy content Toggle raw display
$43$ \( (T^{4} - 230 T^{2} + 10201)^{2} \) Copy content Toggle raw display
$47$ \( T^{8} \) Copy content Toggle raw display
$53$ \( (T^{2} + 100)^{4} \) Copy content Toggle raw display
$59$ \( T^{8} \) Copy content Toggle raw display
$61$ \( T^{8} \) Copy content Toggle raw display
$67$ \( (T^{4} - 150 T^{2} + 2601)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + 398 T^{2} + 34225)^{2} \) Copy content Toggle raw display
$73$ \( T^{8} \) Copy content Toggle raw display
$79$ \( (T^{4} + 222 T^{2} + 225)^{2} \) Copy content Toggle raw display
$83$ \( T^{8} \) 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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