Properties

Label 7728.2.a.be
Level $7728$
Weight $2$
Character orbit 7728.a
Self dual yes
Analytic conductor $61.708$
Analytic rank $0$
Dimension $2$
CM no
Inner twists $1$

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Newspace parameters

Level: \( N \) \(=\) \( 7728 = 2^{4} \cdot 3 \cdot 7 \cdot 23 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 7728.a (trivial)

Newform invariants

Self dual: yes
Analytic conductor: \(61.7083906820\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{5}) \)
Defining polynomial: \(x^{2} - x - 1\)
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 483)
Fricke sign: \(-1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-expansion

Coefficients of the \(q\)-expansion are expressed in terms of \(\beta = \frac{1}{2}(1 + \sqrt{5})\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - q^{3} + ( 3 - \beta ) q^{5} - q^{7} + q^{9} +O(q^{10})\) \( q - q^{3} + ( 3 - \beta ) q^{5} - q^{7} + q^{9} - q^{11} -\beta q^{13} + ( -3 + \beta ) q^{15} + ( -3 + 4 \beta ) q^{17} + ( -3 + 2 \beta ) q^{19} + q^{21} - q^{23} + ( 5 - 5 \beta ) q^{25} - q^{27} + ( 3 + 2 \beta ) q^{29} + ( 5 - 6 \beta ) q^{31} + q^{33} + ( -3 + \beta ) q^{35} + ( -1 - 2 \beta ) q^{37} + \beta q^{39} + ( -1 + 4 \beta ) q^{41} + ( 2 - 3 \beta ) q^{43} + ( 3 - \beta ) q^{45} + ( -8 + 6 \beta ) q^{47} + q^{49} + ( 3 - 4 \beta ) q^{51} + ( 3 + 5 \beta ) q^{53} + ( -3 + \beta ) q^{55} + ( 3 - 2 \beta ) q^{57} + ( 3 - \beta ) q^{59} + ( -6 + 3 \beta ) q^{61} - q^{63} + ( 1 - 2 \beta ) q^{65} + ( 5 - 5 \beta ) q^{67} + q^{69} + ( 6 - 7 \beta ) q^{71} + ( 3 + 2 \beta ) q^{73} + ( -5 + 5 \beta ) q^{75} + q^{77} + ( 13 - 2 \beta ) q^{79} + q^{81} + ( 13 - 8 \beta ) q^{83} + ( -13 + 11 \beta ) q^{85} + ( -3 - 2 \beta ) q^{87} + ( 8 - 9 \beta ) q^{89} + \beta q^{91} + ( -5 + 6 \beta ) q^{93} + ( -11 + 7 \beta ) q^{95} + ( 3 - 6 \beta ) q^{97} - q^{99} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2q - 2q^{3} + 5q^{5} - 2q^{7} + 2q^{9} + O(q^{10}) \) \( 2q - 2q^{3} + 5q^{5} - 2q^{7} + 2q^{9} - 2q^{11} - q^{13} - 5q^{15} - 2q^{17} - 4q^{19} + 2q^{21} - 2q^{23} + 5q^{25} - 2q^{27} + 8q^{29} + 4q^{31} + 2q^{33} - 5q^{35} - 4q^{37} + q^{39} + 2q^{41} + q^{43} + 5q^{45} - 10q^{47} + 2q^{49} + 2q^{51} + 11q^{53} - 5q^{55} + 4q^{57} + 5q^{59} - 9q^{61} - 2q^{63} + 5q^{67} + 2q^{69} + 5q^{71} + 8q^{73} - 5q^{75} + 2q^{77} + 24q^{79} + 2q^{81} + 18q^{83} - 15q^{85} - 8q^{87} + 7q^{89} + q^{91} - 4q^{93} - 15q^{95} - 2q^{99} + O(q^{100}) \)

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
1.61803
−0.618034
0 −1.00000 0 1.38197 0 −1.00000 0 1.00000 0
1.2 0 −1.00000 0 3.61803 0 −1.00000 0 1.00000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(-1\)
\(3\) \(1\)
\(7\) \(1\)
\(23\) \(1\)

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 7728.2.a.be 2
4.b odd 2 1 483.2.a.e 2
12.b even 2 1 1449.2.a.g 2
28.d even 2 1 3381.2.a.o 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
483.2.a.e 2 4.b odd 2 1
1449.2.a.g 2 12.b even 2 1
3381.2.a.o 2 28.d even 2 1
7728.2.a.be 2 1.a even 1 1 trivial

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(7728))\):

\( T_{5}^{2} - 5 T_{5} + 5 \)
\( T_{11} + 1 \)
\( T_{13}^{2} + T_{13} - 1 \)
\( T_{17}^{2} + 2 T_{17} - 19 \)

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \)
$3$ \( ( 1 + T )^{2} \)
$5$ \( 5 - 5 T + T^{2} \)
$7$ \( ( 1 + T )^{2} \)
$11$ \( ( 1 + T )^{2} \)
$13$ \( -1 + T + T^{2} \)
$17$ \( -19 + 2 T + T^{2} \)
$19$ \( -1 + 4 T + T^{2} \)
$23$ \( ( 1 + T )^{2} \)
$29$ \( 11 - 8 T + T^{2} \)
$31$ \( -41 - 4 T + T^{2} \)
$37$ \( -1 + 4 T + T^{2} \)
$41$ \( -19 - 2 T + T^{2} \)
$43$ \( -11 - T + T^{2} \)
$47$ \( -20 + 10 T + T^{2} \)
$53$ \( -1 - 11 T + T^{2} \)
$59$ \( 5 - 5 T + T^{2} \)
$61$ \( 9 + 9 T + T^{2} \)
$67$ \( -25 - 5 T + T^{2} \)
$71$ \( -55 - 5 T + T^{2} \)
$73$ \( 11 - 8 T + T^{2} \)
$79$ \( 139 - 24 T + T^{2} \)
$83$ \( 1 - 18 T + T^{2} \)
$89$ \( -89 - 7 T + T^{2} \)
$97$ \( -45 + T^{2} \)
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