Properties

Label 1216.1.g.a
Level $1216$
Weight $1$
Character orbit 1216.g
Analytic conductor $0.607$
Analytic rank $0$
Dimension $2$
Projective image $D_{2}$
CM/RM discs -8, -19, 152
Inner twists $8$

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Newspace parameters

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

Newform invariants

Self dual: no
Analytic conductor: \(0.606863055362\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(i)\)
Defining polynomial: \(x^{2} + 1\)
Coefficient ring: \(\Z[a_1, \ldots, a_{19}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image \(D_{2}\)
Projective field Galois closure of \(\Q(\sqrt{-2}, \sqrt{-19})\)
Artin image $D_4:C_2$
Artin field Galois closure of 8.0.378535936.1

$q$-expansion

The \(q\)-expansion and trace form are shown below.

\(f(q)\) \(=\) \( q - q^{9} +O(q^{10})\) \( q - q^{9} -2 i q^{11} + 2 q^{17} -i q^{19} + q^{25} + 2 i q^{43} - q^{49} -2 q^{73} + q^{81} -2 i q^{83} + 2 i q^{99} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2q - 2q^{9} + O(q^{10}) \) \( 2q - 2q^{9} + 4q^{17} + 2q^{25} - 2q^{49} - 4q^{73} + 2q^{81} + O(q^{100}) \)

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 \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
417.1
1.00000i
1.00000i
0 0 0 0 0 0 0 −1.00000 0
417.2 0 0 0 0 0 0 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
8.d odd 2 1 CM by \(\Q(\sqrt{-2}) \)
19.b odd 2 1 CM by \(\Q(\sqrt{-19}) \)
152.b even 2 1 RM by \(\Q(\sqrt{38}) \)
4.b odd 2 1 inner
8.b even 2 1 inner
76.d 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 1216.1.g.a 2
4.b odd 2 1 inner 1216.1.g.a 2
8.b even 2 1 inner 1216.1.g.a 2
8.d odd 2 1 CM 1216.1.g.a 2
19.b odd 2 1 CM 1216.1.g.a 2
76.d even 2 1 inner 1216.1.g.a 2
152.b even 2 1 RM 1216.1.g.a 2
152.g odd 2 1 inner 1216.1.g.a 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1216.1.g.a 2 1.a even 1 1 trivial
1216.1.g.a 2 4.b odd 2 1 inner
1216.1.g.a 2 8.b even 2 1 inner
1216.1.g.a 2 8.d odd 2 1 CM
1216.1.g.a 2 19.b odd 2 1 CM
1216.1.g.a 2 76.d even 2 1 inner
1216.1.g.a 2 152.b even 2 1 RM
1216.1.g.a 2 152.g odd 2 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5} \) acting on \(S_{1}^{\mathrm{new}}(1216, [\chi])\).

Hecke characteristic polynomials

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