Properties

Label 9216.2.a.k
Level $9216$
Weight $2$
Character orbit 9216.a
Self dual yes
Analytic conductor $73.590$
Analytic rank $0$
Dimension $2$
CM discriminant -4
Inner twists $4$

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Newspace parameters

Level: \( N \) \(=\) \( 9216 = 2^{10} \cdot 3^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 9216.a (trivial)

Newform invariants

Self dual: yes
Analytic conductor: \(73.5901305028\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{2}) \)
Defining polynomial: \(x^{2} - 2\)
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 4608)
Fricke sign: \(-1\)
Sato-Tate group: $N(\mathrm{U}(1))$

$q$-expansion

Coefficients of the \(q\)-expansion are expressed in terms of \(\beta = \sqrt{2}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 3 \beta q^{5} +O(q^{10})\) \( q + 3 \beta q^{5} -5 \beta q^{13} -2 q^{17} + 13 q^{25} + 7 \beta q^{29} -7 \beta q^{37} + 10 q^{41} -7 q^{49} + 5 \beta q^{53} + 11 \beta q^{61} -30 q^{65} -6 q^{73} -6 \beta q^{85} + 16 q^{89} + 8 q^{97} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2q + O(q^{10}) \) \( 2q - 4q^{17} + 26q^{25} + 20q^{41} - 14q^{49} - 60q^{65} - 12q^{73} + 32q^{89} + 16q^{97} + O(q^{100}) \)

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 \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
−1.41421
1.41421
0 0 0 −4.24264 0 0 0 0 0
1.2 0 0 0 4.24264 0 0 0 0 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(-1\)
\(3\) \(1\)

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 CM by \(\Q(\sqrt{-1}) \)
8.b even 2 1 inner
8.d odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 9216.2.a.k 2
3.b odd 2 1 9216.2.a.m 2
4.b odd 2 1 CM 9216.2.a.k 2
8.b even 2 1 inner 9216.2.a.k 2
8.d odd 2 1 inner 9216.2.a.k 2
12.b even 2 1 9216.2.a.m 2
24.f even 2 1 9216.2.a.m 2
24.h odd 2 1 9216.2.a.m 2
32.g even 8 2 4608.2.k.c yes 2
32.g even 8 2 4608.2.k.v yes 2
32.h odd 8 2 4608.2.k.c yes 2
32.h odd 8 2 4608.2.k.v yes 2
96.o even 8 2 4608.2.k.a 2
96.o even 8 2 4608.2.k.x yes 2
96.p odd 8 2 4608.2.k.a 2
96.p odd 8 2 4608.2.k.x yes 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
4608.2.k.a 2 96.o even 8 2
4608.2.k.a 2 96.p odd 8 2
4608.2.k.c yes 2 32.g even 8 2
4608.2.k.c yes 2 32.h odd 8 2
4608.2.k.v yes 2 32.g even 8 2
4608.2.k.v yes 2 32.h odd 8 2
4608.2.k.x yes 2 96.o even 8 2
4608.2.k.x yes 2 96.p odd 8 2
9216.2.a.k 2 1.a even 1 1 trivial
9216.2.a.k 2 4.b odd 2 1 CM
9216.2.a.k 2 8.b even 2 1 inner
9216.2.a.k 2 8.d odd 2 1 inner
9216.2.a.m 2 3.b odd 2 1
9216.2.a.m 2 12.b even 2 1
9216.2.a.m 2 24.f even 2 1
9216.2.a.m 2 24.h odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(9216))\):

\( T_{5}^{2} - 18 \)
\( T_{7} \)
\( T_{11} \)
\( T_{13}^{2} - 50 \)
\( T_{17} + 2 \)
\( T_{19} \)
\( T_{67} \)

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \)
$3$ \( T^{2} \)
$5$ \( -18 + T^{2} \)
$7$ \( T^{2} \)
$11$ \( T^{2} \)
$13$ \( -50 + T^{2} \)
$17$ \( ( 2 + T )^{2} \)
$19$ \( T^{2} \)
$23$ \( T^{2} \)
$29$ \( -98 + T^{2} \)
$31$ \( T^{2} \)
$37$ \( -98 + T^{2} \)
$41$ \( ( -10 + T )^{2} \)
$43$ \( T^{2} \)
$47$ \( T^{2} \)
$53$ \( -50 + T^{2} \)
$59$ \( T^{2} \)
$61$ \( -242 + T^{2} \)
$67$ \( T^{2} \)
$71$ \( T^{2} \)
$73$ \( ( 6 + T )^{2} \)
$79$ \( T^{2} \)
$83$ \( T^{2} \)
$89$ \( ( -16 + T )^{2} \)
$97$ \( ( -8 + T )^{2} \)
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