Properties

Label 1216.2.b.a
Level $1216$
Weight $2$
Character orbit 1216.b
Analytic conductor $9.710$
Analytic rank $0$
Dimension $4$
CM no
Inner twists $4$

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Newspace parameters

Level: \( N \) \(=\) \( 1216 = 2^{6} \cdot 19 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1216.b (of order \(2\), degree \(1\), minimal)

Newform invariants

Self dual: no
Analytic conductor: \(9.70980888579\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\zeta_{12})\)
Defining polynomial: \(x^{4} - x^{2} + 1\)
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

Coefficients of the \(q\)-expansion are expressed in terms of a primitive root of unity \(\zeta_{12}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 2 \zeta_{12}^{3} q^{3} + ( -1 + 2 \zeta_{12}^{2} ) q^{5} + \zeta_{12}^{3} q^{7} - q^{9} +O(q^{10})\) \( q + 2 \zeta_{12}^{3} q^{3} + ( -1 + 2 \zeta_{12}^{2} ) q^{5} + \zeta_{12}^{3} q^{7} - q^{9} + ( -6 \zeta_{12} + 3 \zeta_{12}^{3} ) q^{11} -4 q^{13} + ( -4 \zeta_{12} + 2 \zeta_{12}^{3} ) q^{15} + 3 q^{17} + ( -2 \zeta_{12} - 3 \zeta_{12}^{3} ) q^{19} -2 q^{21} + 2 q^{25} + 4 \zeta_{12}^{3} q^{27} -6 q^{29} + ( -12 \zeta_{12} + 6 \zeta_{12}^{3} ) q^{31} + ( 6 - 12 \zeta_{12}^{2} ) q^{33} + ( -2 \zeta_{12} + \zeta_{12}^{3} ) q^{35} + 2 q^{37} -8 \zeta_{12}^{3} q^{39} + ( 2 - 4 \zeta_{12}^{2} ) q^{41} + ( 6 \zeta_{12} - 3 \zeta_{12}^{3} ) q^{43} + ( 1 - 2 \zeta_{12}^{2} ) q^{45} + 9 \zeta_{12}^{3} q^{47} + 6 q^{49} + 6 \zeta_{12}^{3} q^{51} + 6 q^{53} -9 \zeta_{12}^{3} q^{55} + ( 10 - 4 \zeta_{12}^{2} ) q^{57} + ( -1 + 2 \zeta_{12}^{2} ) q^{61} -\zeta_{12}^{3} q^{63} + ( 4 - 8 \zeta_{12}^{2} ) q^{65} + 2 \zeta_{12}^{3} q^{67} + ( -8 \zeta_{12} + 4 \zeta_{12}^{3} ) q^{71} -11 q^{73} + 4 \zeta_{12}^{3} q^{75} + ( 3 - 6 \zeta_{12}^{2} ) q^{77} + ( -4 \zeta_{12} + 2 \zeta_{12}^{3} ) q^{79} -11 q^{81} + ( 4 \zeta_{12} - 2 \zeta_{12}^{3} ) q^{83} + ( -3 + 6 \zeta_{12}^{2} ) q^{85} -12 \zeta_{12}^{3} q^{87} + ( -2 + 4 \zeta_{12}^{2} ) q^{89} -4 \zeta_{12}^{3} q^{91} + ( 12 - 24 \zeta_{12}^{2} ) q^{93} + ( 8 \zeta_{12} - 7 \zeta_{12}^{3} ) q^{95} + ( 8 - 16 \zeta_{12}^{2} ) q^{97} + ( 6 \zeta_{12} - 3 \zeta_{12}^{3} ) q^{99} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4q - 4q^{9} + O(q^{10}) \) \( 4q - 4q^{9} - 16q^{13} + 12q^{17} - 8q^{21} + 8q^{25} - 24q^{29} + 8q^{37} + 24q^{49} + 24q^{53} + 32q^{57} - 44q^{73} - 44q^{81} + O(q^{100}) \)

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1216\mathbb{Z}\right)^\times\).

\(n\) \(191\) \(705\) \(837\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\)

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.

Label \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
607.1
0.866025 0.500000i
−0.866025 0.500000i
−0.866025 + 0.500000i
0.866025 + 0.500000i
0 2.00000i 0 1.73205i 0 1.00000i 0 −1.00000 0
607.2 0 2.00000i 0 1.73205i 0 1.00000i 0 −1.00000 0
607.3 0 2.00000i 0 1.73205i 0 1.00000i 0 −1.00000 0
607.4 0 2.00000i 0 1.73205i 0 1.00000i 0 −1.00000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
152.b even 2 1 inner
152.g odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1216.2.b.a 4
4.b odd 2 1 inner 1216.2.b.a 4
8.b even 2 1 1216.2.b.b yes 4
8.d odd 2 1 1216.2.b.b yes 4
19.b odd 2 1 1216.2.b.b yes 4
76.d even 2 1 1216.2.b.b yes 4
152.b even 2 1 inner 1216.2.b.a 4
152.g odd 2 1 inner 1216.2.b.a 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1216.2.b.a 4 1.a even 1 1 trivial
1216.2.b.a 4 4.b odd 2 1 inner
1216.2.b.a 4 152.b even 2 1 inner
1216.2.b.a 4 152.g odd 2 1 inner
1216.2.b.b yes 4 8.b even 2 1
1216.2.b.b yes 4 8.d odd 2 1
1216.2.b.b yes 4 19.b odd 2 1
1216.2.b.b yes 4 76.d even 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1216, [\chi])\):

\( T_{3}^{2} + 4 \)
\( T_{5}^{2} + 3 \)
\( T_{13} + 4 \)

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \)
$3$ \( ( 4 + T^{2} )^{2} \)
$5$ \( ( 3 + T^{2} )^{2} \)
$7$ \( ( 1 + T^{2} )^{2} \)
$11$ \( ( -27 + T^{2} )^{2} \)
$13$ \( ( 4 + T )^{4} \)
$17$ \( ( -3 + T )^{4} \)
$19$ \( 361 + 26 T^{2} + T^{4} \)
$23$ \( T^{4} \)
$29$ \( ( 6 + T )^{4} \)
$31$ \( ( -108 + T^{2} )^{2} \)
$37$ \( ( -2 + T )^{4} \)
$41$ \( ( 12 + T^{2} )^{2} \)
$43$ \( ( -27 + T^{2} )^{2} \)
$47$ \( ( 81 + T^{2} )^{2} \)
$53$ \( ( -6 + T )^{4} \)
$59$ \( T^{4} \)
$61$ \( ( 3 + T^{2} )^{2} \)
$67$ \( ( 4 + T^{2} )^{2} \)
$71$ \( ( -48 + T^{2} )^{2} \)
$73$ \( ( 11 + T )^{4} \)
$79$ \( ( -12 + T^{2} )^{2} \)
$83$ \( ( -12 + T^{2} )^{2} \)
$89$ \( ( 12 + T^{2} )^{2} \)
$97$ \( ( 192 + T^{2} )^{2} \)
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