Properties

Label 348.2.b.c
Level $348$
Weight $2$
Character orbit 348.b
Analytic conductor $2.779$
Analytic rank $0$
Dimension $12$
CM discriminant -87
Inner twists $8$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [348,2,Mod(347,348)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(348, 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("348.347");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 348 = 2^{2} \cdot 3 \cdot 29 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 348.b (of order \(2\), degree \(1\), 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: \(2.77879399034\)
Analytic rank: \(0\)
Dimension: \(12\)
Coefficient field: 12.0.230446741890423969.3
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{12} - 13x^{6} + 64 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{8} \)
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 \(1,\beta_1,\ldots,\beta_{11}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_{6} q^{2} + \beta_{4} q^{3} + \beta_{5} q^{4} - \beta_{3} q^{6} + (\beta_{9} - \beta_{5} - \beta_{3}) q^{7} + (\beta_{4} - \beta_{2}) q^{8} - 3 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{6} q^{2} + \beta_{4} q^{3} + \beta_{5} q^{4} - \beta_{3} q^{6} + (\beta_{9} - \beta_{5} - \beta_{3}) q^{7} + (\beta_{4} - \beta_{2}) q^{8} - 3 q^{9} + ( - \beta_{10} - \beta_{7} + \beta_1) q^{11} + \beta_{7} q^{12} + ( - \beta_{9} - \beta_{5} - \beta_{3}) q^{13} + (\beta_{7} + \beta_{4} + \beta_{2} - \beta_1) q^{14} + (\beta_{9} + \beta_{8} - \beta_{3}) q^{16} + (\beta_{10} - \beta_{7} - 2 \beta_{6} - \beta_1) q^{17} + 3 \beta_{6} q^{18} + (\beta_{10} - \beta_{7} + 2 \beta_{6} + \beta_1) q^{21} + (\beta_{11} - \beta_{9} + \cdots + \beta_{5}) q^{22}+ \cdots + (3 \beta_{10} + 3 \beta_{7} - 3 \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 12 q - 36 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 12 q - 36 q^{9} - 6 q^{22} - 18 q^{24} + 60 q^{25} + 30 q^{28} + 42 q^{34} - 54 q^{42} - 84 q^{49} - 66 q^{52} + 78 q^{64} + 90 q^{78} + 108 q^{81} - 102 q^{94}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{12} - 13x^{6} + 64 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( 2\nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{3} \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{8} - 5\nu^{2} ) / 4 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( \nu^{9} - 5\nu^{3} ) / 8 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{10} + 13\nu^{4} ) / 16 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -\nu^{11} + 13\nu^{5} ) / 32 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( \nu^{7} - 5\nu ) / 2 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( \nu^{10} - 5\nu^{4} + 8\nu^{2} ) / 8 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( -\nu^{10} + 5\nu^{4} + 8\nu^{2} ) / 8 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 3\nu^{11} - 7\nu^{5} + 32\nu ) / 32 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( \nu^{6} - 7 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{9} + \beta_{8} ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{2} \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -\beta_{9} + \beta_{8} + 4\beta_{5} ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 2\beta_{10} + 6\beta_{6} - \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( \beta_{11} + 7 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 4\beta_{7} + 5\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( 5\beta_{9} + 5\beta_{8} + 8\beta_{3} ) / 2 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( 8\beta_{4} + 5\beta_{2} \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( -13\beta_{9} + 13\beta_{8} + 20\beta_{5} ) / 2 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 26\beta_{10} + 14\beta_{6} - 13\beta_1 ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/348\mathbb{Z}\right)^\times\).

\(n\) \(175\) \(205\) \(233\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
347.1
1.40661 0.146431i
1.40661 + 0.146431i
0.830119 1.14495i
0.830119 + 1.14495i
0.576493 1.29138i
0.576493 + 1.29138i
−0.576493 1.29138i
−0.576493 + 1.29138i
−0.830119 1.14495i
−0.830119 + 1.14495i
−1.40661 0.146431i
−1.40661 + 0.146431i
−1.40661 0.146431i 1.73205i 1.95712 + 0.411943i 0 −0.253625 + 2.43632i 4.04876i −2.69258 0.866025i −3.00000 0
347.2 −1.40661 + 0.146431i 1.73205i 1.95712 0.411943i 0 −0.253625 2.43632i 4.04876i −2.69258 + 0.866025i −3.00000 0
347.3 −0.830119 1.14495i 1.73205i −0.621805 + 1.90088i 0 −1.98311 + 1.43781i 0.926151i 2.69258 0.866025i −3.00000 0
347.4 −0.830119 + 1.14495i 1.73205i −0.621805 1.90088i 0 −1.98311 1.43781i 0.926151i 2.69258 + 0.866025i −3.00000 0
347.5 −0.576493 1.29138i 1.73205i −1.33531 + 1.48894i 0 2.23673 0.998516i 4.97491i 2.69258 + 0.866025i −3.00000 0
347.6 −0.576493 + 1.29138i 1.73205i −1.33531 1.48894i 0 2.23673 + 0.998516i 4.97491i 2.69258 0.866025i −3.00000 0
347.7 0.576493 1.29138i 1.73205i −1.33531 1.48894i 0 2.23673 + 0.998516i 4.97491i −2.69258 + 0.866025i −3.00000 0
347.8 0.576493 + 1.29138i 1.73205i −1.33531 + 1.48894i 0 2.23673 0.998516i 4.97491i −2.69258 0.866025i −3.00000 0
347.9 0.830119 1.14495i 1.73205i −0.621805 1.90088i 0 −1.98311 1.43781i 0.926151i −2.69258 0.866025i −3.00000 0
347.10 0.830119 + 1.14495i 1.73205i −0.621805 + 1.90088i 0 −1.98311 + 1.43781i 0.926151i −2.69258 + 0.866025i −3.00000 0
347.11 1.40661 0.146431i 1.73205i 1.95712 0.411943i 0 −0.253625 2.43632i 4.04876i 2.69258 0.866025i −3.00000 0
347.12 1.40661 + 0.146431i 1.73205i 1.95712 + 0.411943i 0 −0.253625 + 2.43632i 4.04876i 2.69258 + 0.866025i −3.00000 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 347.12
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
87.d odd 2 1 CM by \(\Q(\sqrt{-87}) \)
3.b odd 2 1 inner
4.b odd 2 1 inner
12.b even 2 1 inner
29.b even 2 1 inner
116.d odd 2 1 inner
348.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 348.2.b.c 12
3.b odd 2 1 inner 348.2.b.c 12
4.b odd 2 1 inner 348.2.b.c 12
12.b even 2 1 inner 348.2.b.c 12
29.b even 2 1 inner 348.2.b.c 12
87.d odd 2 1 CM 348.2.b.c 12
116.d odd 2 1 inner 348.2.b.c 12
348.b even 2 1 inner 348.2.b.c 12
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
348.2.b.c 12 1.a even 1 1 trivial
348.2.b.c 12 3.b odd 2 1 inner
348.2.b.c 12 4.b odd 2 1 inner
348.2.b.c 12 12.b even 2 1 inner
348.2.b.c 12 29.b even 2 1 inner
348.2.b.c 12 87.d odd 2 1 CM
348.2.b.c 12 116.d odd 2 1 inner
348.2.b.c 12 348.b even 2 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5} \) acting on \(S_{2}^{\mathrm{new}}(348, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{12} - 13T^{6} + 64 \) Copy content Toggle raw display
$3$ \( (T^{2} + 3)^{6} \) Copy content Toggle raw display
$5$ \( T^{12} \) Copy content Toggle raw display
$7$ \( (T^{6} + 42 T^{4} + \cdots + 348)^{2} \) Copy content Toggle raw display
$11$ \( (T^{6} + 66 T^{4} + \cdots + 3468)^{2} \) Copy content Toggle raw display
$13$ \( (T^{3} - 39 T - 86)^{4} \) Copy content Toggle raw display
$17$ \( (T^{6} - 102 T^{4} + \cdots - 19604)^{2} \) Copy content Toggle raw display
$19$ \( T^{12} \) Copy content Toggle raw display
$23$ \( T^{12} \) Copy content Toggle raw display
$29$ \( (T^{2} - 29)^{6} \) Copy content Toggle raw display
$31$ \( T^{12} \) Copy content Toggle raw display
$37$ \( T^{12} \) Copy content Toggle raw display
$41$ \( (T^{2} - 116)^{6} \) Copy content Toggle raw display
$43$ \( T^{12} \) Copy content Toggle raw display
$47$ \( (T^{6} + 282 T^{4} + \cdots + 359148)^{2} \) Copy content Toggle raw display
$53$ \( T^{12} \) Copy content Toggle raw display
$59$ \( T^{12} \) Copy content Toggle raw display
$61$ \( T^{12} \) Copy content Toggle raw display
$67$ \( (T^{6} + 402 T^{4} + \cdots + 334428)^{2} \) Copy content Toggle raw display
$71$ \( T^{12} \) Copy content Toggle raw display
$73$ \( T^{12} \) Copy content Toggle raw display
$79$ \( T^{12} \) Copy content Toggle raw display
$83$ \( T^{12} \) Copy content Toggle raw display
$89$ \( (T^{6} - 534 T^{4} + \cdots - 1481204)^{2} \) Copy content Toggle raw display
$97$ \( T^{12} \) Copy content Toggle raw display
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