Properties

Label 336.2.bq.a
Level $336$
Weight $2$
Character orbit 336.bq
Analytic conductor $2.683$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [336,2,Mod(37,336)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(336, base_ring=CyclotomicField(12))
 
chi = DirichletCharacter(H, H._module([0, 3, 0, 4]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("336.37");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 336 = 2^{4} \cdot 3 \cdot 7 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 336.bq (of order \(12\), degree \(4\), 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: \(2.68297350792\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(2\) over \(\Q(\zeta_{12})\)
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: \(\Z[a_1, a_2, a_3]\)
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 \(\zeta_{24}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \zeta_{24}^{7} + \zeta_{24}) q^{2} + \zeta_{24}^{5} q^{3} + ( - 2 \zeta_{24}^{4} + 2) q^{4} + (\zeta_{24}^{7} + \cdots - 2 \zeta_{24}^{2}) q^{5}+ \cdots + (\zeta_{24}^{6} - \zeta_{24}^{2}) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - \zeta_{24}^{7} + \zeta_{24}) q^{2} + \zeta_{24}^{5} q^{3} + ( - 2 \zeta_{24}^{4} + 2) q^{4} + (\zeta_{24}^{7} + \cdots - 2 \zeta_{24}^{2}) q^{5}+ \cdots + (\zeta_{24}^{6} + \zeta_{24}^{5} + \cdots - 1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 8 q^{4} + 8 q^{5} + 8 q^{6}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 8 q^{4} + 8 q^{5} + 8 q^{6} - 4 q^{10} + 4 q^{11} - 8 q^{13} - 8 q^{15} - 16 q^{16} + 16 q^{17} + 8 q^{19} + 32 q^{20} - 12 q^{21} + 8 q^{22} + 8 q^{24} + 8 q^{26} + 32 q^{29} + 4 q^{31} + 4 q^{33} - 16 q^{35} - 8 q^{37} + 8 q^{40} - 4 q^{42} + 48 q^{43} - 8 q^{44} + 8 q^{45} - 24 q^{46} + 8 q^{47} - 20 q^{49} - 64 q^{50} + 8 q^{51} - 8 q^{52} - 16 q^{53} - 4 q^{54} + 48 q^{56} - 12 q^{58} - 20 q^{59} - 8 q^{60} - 4 q^{61} - 8 q^{63} - 64 q^{64} - 24 q^{65} - 32 q^{67} - 32 q^{68} - 24 q^{69} - 44 q^{70} - 16 q^{75} + 32 q^{76} - 8 q^{77} - 16 q^{78} - 28 q^{79} + 32 q^{80} + 4 q^{81} - 8 q^{82} - 8 q^{83} + 80 q^{85} + 8 q^{86} + 8 q^{88} - 8 q^{90} - 28 q^{91} - 4 q^{93} - 32 q^{95} - 16 q^{96} - 24 q^{97} - 8 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/336\mathbb{Z}\right)^\times\).

\(n\) \(85\) \(113\) \(127\) \(241\)
\(\chi(n)\) \(\zeta_{24}^{6}\) \(1\) \(1\) \(-\zeta_{24}^{4}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
37.1
−0.258819 0.965926i
0.258819 + 0.965926i
−0.258819 + 0.965926i
0.258819 0.965926i
−0.965926 + 0.258819i
0.965926 0.258819i
−0.965926 0.258819i
0.965926 + 0.258819i
−1.22474 0.707107i −0.965926 0.258819i 1.00000 + 1.73205i 3.69798 0.990870i 1.00000 + 1.00000i 0.358719 + 2.62132i 2.82843i 0.866025 + 0.500000i −5.22973 1.40130i
37.2 1.22474 + 0.707107i 0.965926 + 0.258819i 1.00000 + 1.73205i 1.76612 0.473232i 1.00000 + 1.00000i −2.09077 1.62132i 2.82843i 0.866025 + 0.500000i 2.49768 + 0.669251i
109.1 −1.22474 + 0.707107i −0.965926 + 0.258819i 1.00000 1.73205i 3.69798 + 0.990870i 1.00000 1.00000i 0.358719 2.62132i 2.82843i 0.866025 0.500000i −5.22973 + 1.40130i
109.2 1.22474 0.707107i 0.965926 0.258819i 1.00000 1.73205i 1.76612 + 0.473232i 1.00000 1.00000i −2.09077 + 1.62132i 2.82843i 0.866025 0.500000i 2.49768 0.669251i
205.1 −1.22474 0.707107i −0.258819 + 0.965926i 1.00000 + 1.73205i −0.473232 1.76612i 1.00000 1.00000i 2.09077 + 1.62132i 2.82843i −0.866025 0.500000i −0.669251 + 2.49768i
205.2 1.22474 + 0.707107i 0.258819 0.965926i 1.00000 + 1.73205i −0.990870 3.69798i 1.00000 1.00000i −0.358719 2.62132i 2.82843i −0.866025 0.500000i 1.40130 5.22973i
277.1 −1.22474 + 0.707107i −0.258819 0.965926i 1.00000 1.73205i −0.473232 + 1.76612i 1.00000 + 1.00000i 2.09077 1.62132i 2.82843i −0.866025 + 0.500000i −0.669251 2.49768i
277.2 1.22474 0.707107i 0.258819 + 0.965926i 1.00000 1.73205i −0.990870 + 3.69798i 1.00000 + 1.00000i −0.358719 + 2.62132i 2.82843i −0.866025 + 0.500000i 1.40130 + 5.22973i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 37.2
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.c even 3 1 inner
16.e even 4 1 inner
112.w even 12 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 336.2.bq.a 8
7.c even 3 1 inner 336.2.bq.a 8
16.e even 4 1 inner 336.2.bq.a 8
112.w even 12 1 inner 336.2.bq.a 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
336.2.bq.a 8 1.a even 1 1 trivial
336.2.bq.a 8 7.c even 3 1 inner
336.2.bq.a 8 16.e even 4 1 inner
336.2.bq.a 8 112.w even 12 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{8} - 8T_{5}^{7} + 32T_{5}^{6} - 144T_{5}^{5} + 527T_{5}^{4} - 1008T_{5}^{3} + 1568T_{5}^{2} - 2744T_{5} + 2401 \) acting on \(S_{2}^{\mathrm{new}}(336, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{4} - 2 T^{2} + 4)^{2} \) Copy content Toggle raw display
$3$ \( T^{8} - T^{4} + 1 \) Copy content Toggle raw display
$5$ \( T^{8} - 8 T^{7} + \cdots + 2401 \) Copy content Toggle raw display
$7$ \( T^{8} + 10 T^{6} + \cdots + 2401 \) Copy content Toggle raw display
$11$ \( T^{8} - 4 T^{7} + \cdots + 1 \) Copy content Toggle raw display
$13$ \( (T^{4} + 4 T^{3} + 8 T^{2} + \cdots + 4)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} - 8 T^{3} + 56 T^{2} + \cdots + 64)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} - 4 T^{3} + 8 T^{2} + \cdots + 64)^{2} \) Copy content Toggle raw display
$23$ \( T^{8} - 68 T^{6} + \cdots + 16 \) Copy content Toggle raw display
$29$ \( (T^{4} - 16 T^{3} + \cdots + 529)^{2} \) Copy content Toggle raw display
$31$ \( (T^{4} - 2 T^{3} + 5 T^{2} + \cdots + 1)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} + 4 T^{3} + 8 T^{2} + \cdots + 64)^{2} \) Copy content Toggle raw display
$41$ \( (T^{4} + 12 T^{2} + 4)^{2} \) Copy content Toggle raw display
$43$ \( (T^{4} - 24 T^{3} + \cdots + 4624)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} - 4 T^{3} + \cdots + 196)^{2} \) Copy content Toggle raw display
$53$ \( T^{8} + 16 T^{7} + \cdots + 279841 \) Copy content Toggle raw display
$59$ \( T^{8} + 20 T^{7} + \cdots + 390625 \) Copy content Toggle raw display
$61$ \( T^{8} + 4 T^{7} + \cdots + 38416 \) Copy content Toggle raw display
$67$ \( T^{8} + 32 T^{7} + \cdots + 236421376 \) Copy content Toggle raw display
$71$ \( (T^{4} + 268 T^{2} + 3844)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} - 16 T^{2} + 256)^{2} \) Copy content Toggle raw display
$79$ \( (T^{4} + 14 T^{3} + \cdots + 961)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} + 4 T^{3} + \cdots + 14161)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} - 242 T^{2} + 58564)^{2} \) Copy content Toggle raw display
$97$ \( (T^{2} + 6 T - 119)^{4} \) Copy content Toggle raw display
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