Properties

Label 2646.2.a.bm
Level $2646$
Weight $2$
Character orbit 2646.a
Self dual yes
Analytic conductor $21.128$
Analytic rank $1$
Dimension $2$
CM no
Inner twists $1$

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Newspace parameters

Level: \( N \) \(=\) \( 2646 = 2 \cdot 3^{3} \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2646.a (trivial)

Newform invariants

Self dual: yes
Analytic conductor: \(21.1284163748\)
Analytic rank: \(1\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{2}) \)
Defining polynomial: \(x^{2} - 2\)
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Fricke sign: \(1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-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.

\(f(q)\) \(=\) \( q + q^{2} + q^{4} + \beta q^{5} + q^{8} +O(q^{10})\) \( q + q^{2} + q^{4} + \beta q^{5} + q^{8} + \beta q^{10} + ( -2 - 3 \beta ) q^{11} -3 q^{13} + q^{16} + ( -3 + \beta ) q^{17} + ( -6 - \beta ) q^{19} + \beta q^{20} + ( -2 - 3 \beta ) q^{22} - q^{23} -3 q^{25} -3 q^{26} + ( -1 + 3 \beta ) q^{29} + ( -3 - 3 \beta ) q^{31} + q^{32} + ( -3 + \beta ) q^{34} + ( -2 + 6 \beta ) q^{37} + ( -6 - \beta ) q^{38} + \beta q^{40} -2 \beta q^{41} + ( -1 - 3 \beta ) q^{43} + ( -2 - 3 \beta ) q^{44} - q^{46} -5 \beta q^{47} -3 q^{50} -3 q^{52} + ( 7 - 3 \beta ) q^{53} + ( -6 - 2 \beta ) q^{55} + ( -1 + 3 \beta ) q^{58} + ( -3 - 2 \beta ) q^{59} + ( -6 + 4 \beta ) q^{61} + ( -3 - 3 \beta ) q^{62} + q^{64} -3 \beta q^{65} + ( 9 - 3 \beta ) q^{67} + ( -3 + \beta ) q^{68} + ( 3 + 6 \beta ) q^{71} + 7 \beta q^{73} + ( -2 + 6 \beta ) q^{74} + ( -6 - \beta ) q^{76} + ( 2 + 9 \beta ) q^{79} + \beta q^{80} -2 \beta q^{82} + ( -6 + 8 \beta ) q^{83} + ( 2 - 3 \beta ) q^{85} + ( -1 - 3 \beta ) q^{86} + ( -2 - 3 \beta ) q^{88} + ( 9 + 5 \beta ) q^{89} - q^{92} -5 \beta q^{94} + ( -2 - 6 \beta ) q^{95} + ( -12 + 2 \beta ) q^{97} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2q + 2q^{2} + 2q^{4} + 2q^{8} + O(q^{10}) \) \( 2q + 2q^{2} + 2q^{4} + 2q^{8} - 4q^{11} - 6q^{13} + 2q^{16} - 6q^{17} - 12q^{19} - 4q^{22} - 2q^{23} - 6q^{25} - 6q^{26} - 2q^{29} - 6q^{31} + 2q^{32} - 6q^{34} - 4q^{37} - 12q^{38} - 2q^{43} - 4q^{44} - 2q^{46} - 6q^{50} - 6q^{52} + 14q^{53} - 12q^{55} - 2q^{58} - 6q^{59} - 12q^{61} - 6q^{62} + 2q^{64} + 18q^{67} - 6q^{68} + 6q^{71} - 4q^{74} - 12q^{76} + 4q^{79} - 12q^{83} + 4q^{85} - 2q^{86} - 4q^{88} + 18q^{89} - 2q^{92} - 4q^{95} - 24q^{97} + O(q^{100}) \)

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
1.00000 0 1.00000 −1.41421 0 0 1.00000 0 −1.41421
1.2 1.00000 0 1.00000 1.41421 0 0 1.00000 0 1.41421
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(-1\)
\(3\) \(-1\)
\(7\) \(1\)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2646.2.a.bm yes 2
3.b odd 2 1 2646.2.a.bg 2
7.b odd 2 1 2646.2.a.bn yes 2
21.c even 2 1 2646.2.a.bh yes 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2646.2.a.bg 2 3.b odd 2 1
2646.2.a.bh yes 2 21.c even 2 1
2646.2.a.bm yes 2 1.a even 1 1 trivial
2646.2.a.bn yes 2 7.b odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(2646))\):

\( T_{5}^{2} - 2 \)
\( T_{11}^{2} + 4 T_{11} - 14 \)
\( T_{13} + 3 \)
\( T_{17}^{2} + 6 T_{17} + 7 \)

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( ( -1 + T )^{2} \)
$3$ \( T^{2} \)
$5$ \( -2 + T^{2} \)
$7$ \( T^{2} \)
$11$ \( -14 + 4 T + T^{2} \)
$13$ \( ( 3 + T )^{2} \)
$17$ \( 7 + 6 T + T^{2} \)
$19$ \( 34 + 12 T + T^{2} \)
$23$ \( ( 1 + T )^{2} \)
$29$ \( -17 + 2 T + T^{2} \)
$31$ \( -9 + 6 T + T^{2} \)
$37$ \( -68 + 4 T + T^{2} \)
$41$ \( -8 + T^{2} \)
$43$ \( -17 + 2 T + T^{2} \)
$47$ \( -50 + T^{2} \)
$53$ \( 31 - 14 T + T^{2} \)
$59$ \( 1 + 6 T + T^{2} \)
$61$ \( 4 + 12 T + T^{2} \)
$67$ \( 63 - 18 T + T^{2} \)
$71$ \( -63 - 6 T + T^{2} \)
$73$ \( -98 + T^{2} \)
$79$ \( -158 - 4 T + T^{2} \)
$83$ \( -92 + 12 T + T^{2} \)
$89$ \( 31 - 18 T + T^{2} \)
$97$ \( 136 + 24 T + T^{2} \)
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