Properties

Label 784.4.a.u
Level $784$
Weight $4$
Character orbit 784.a
Self dual yes
Analytic conductor $46.257$
Analytic rank $1$
Dimension $2$
CM no
Inner twists $1$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [784,4,Mod(1,784)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(784, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0, 0]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("784.1");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 784 = 2^{4} \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 784.a (trivial)

Newform invariants

comment: select newform
 
sage: f = N[0] # Warning: the index may be different
 
gp: f = lf[1] \\ Warning: the index may be different
 
Self dual: yes
Analytic conductor: \(46.2574974445\)
Analytic rank: \(1\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{37}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x - 9 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 2 \)
Twist minimal: no (minimal twist has level 28)
Fricke sign: \(-1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

Coefficients of the \(q\)-expansion are expressed in terms of \(\beta = \sqrt{37}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta q^{3} + ( - 2 \beta - 7) q^{5} + 10 q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - \beta q^{3} + ( - 2 \beta - 7) q^{5} + 10 q^{9} + (7 \beta - 16) q^{11} + (4 \beta - 14) q^{13} + (7 \beta + 74) q^{15} + ( - 4 \beta - 77) q^{17} + ( - 3 \beta + 112) q^{19} + (7 \beta - 34) q^{23} + (28 \beta + 72) q^{25} + 17 \beta q^{27} + (28 \beta - 118) q^{29} + ( - 7 \beta + 98) q^{31} + (16 \beta - 259) q^{33} + (42 \beta + 173) q^{37} + (14 \beta - 148) q^{39} + (12 \beta - 210) q^{41} + 172 q^{43} + ( - 20 \beta - 70) q^{45} + (15 \beta - 42) q^{47} + (77 \beta + 148) q^{51} + ( - 42 \beta - 219) q^{53} + ( - 17 \beta - 406) q^{55} + ( - 112 \beta + 111) q^{57} + ( - 37 \beta + 28) q^{59} + ( - 74 \beta + 49) q^{61} - 198 q^{65} + (7 \beta - 168) q^{67} + (34 \beta - 259) q^{69} + ( - 56 \beta - 448) q^{71} + (20 \beta + 483) q^{73} + ( - 72 \beta - 1036) q^{75} + ( - 133 \beta + 26) q^{79} - 899 q^{81} + (88 \beta - 196) q^{83} + (182 \beta + 835) q^{85} + (118 \beta - 1036) q^{87} + (60 \beta + 147) q^{89} + ( - 98 \beta + 259) q^{93} + ( - 203 \beta - 562) q^{95} + ( - 76 \beta - 210) q^{97} + (70 \beta - 160) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 14 q^{5} + 20 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - 14 q^{5} + 20 q^{9} - 32 q^{11} - 28 q^{13} + 148 q^{15} - 154 q^{17} + 224 q^{19} - 68 q^{23} + 144 q^{25} - 236 q^{29} + 196 q^{31} - 518 q^{33} + 346 q^{37} - 296 q^{39} - 420 q^{41} + 344 q^{43} - 140 q^{45} - 84 q^{47} + 296 q^{51} - 438 q^{53} - 812 q^{55} + 222 q^{57} + 56 q^{59} + 98 q^{61} - 396 q^{65} - 336 q^{67} - 518 q^{69} - 896 q^{71} + 966 q^{73} - 2072 q^{75} + 52 q^{79} - 1798 q^{81} - 392 q^{83} + 1670 q^{85} - 2072 q^{87} + 294 q^{89} + 518 q^{93} - 1124 q^{95} - 420 q^{97} - 320 q^{99}+O(q^{100}) \) Copy content Toggle raw display

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.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
3.54138
−2.54138
0 −6.08276 0 −19.1655 0 0 0 10.0000 0
1.2 0 6.08276 0 5.16553 0 0 0 10.0000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

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

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 784.4.a.u 2
4.b odd 2 1 196.4.a.e 2
7.b odd 2 1 784.4.a.ba 2
7.c even 3 2 112.4.i.d 4
12.b even 2 1 1764.4.a.z 2
28.d even 2 1 196.4.a.g 2
28.f even 6 2 196.4.e.g 4
28.g odd 6 2 28.4.e.a 4
56.k odd 6 2 448.4.i.h 4
56.p even 6 2 448.4.i.g 4
84.h odd 2 1 1764.4.a.n 2
84.j odd 6 2 1764.4.k.ba 4
84.n even 6 2 252.4.k.c 4
140.p odd 6 2 700.4.i.g 4
140.w even 12 4 700.4.r.d 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
28.4.e.a 4 28.g odd 6 2
112.4.i.d 4 7.c even 3 2
196.4.a.e 2 4.b odd 2 1
196.4.a.g 2 28.d even 2 1
196.4.e.g 4 28.f even 6 2
252.4.k.c 4 84.n even 6 2
448.4.i.g 4 56.p even 6 2
448.4.i.h 4 56.k odd 6 2
700.4.i.g 4 140.p odd 6 2
700.4.r.d 8 140.w even 12 4
784.4.a.u 2 1.a even 1 1 trivial
784.4.a.ba 2 7.b odd 2 1
1764.4.a.n 2 84.h odd 2 1
1764.4.a.z 2 12.b even 2 1
1764.4.k.ba 4 84.j odd 6 2

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(\Gamma_0(784))\):

\( T_{3}^{2} - 37 \) Copy content Toggle raw display
\( T_{5}^{2} + 14T_{5} - 99 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} - 37 \) Copy content Toggle raw display
$5$ \( T^{2} + 14T - 99 \) Copy content Toggle raw display
$7$ \( T^{2} \) Copy content Toggle raw display
$11$ \( T^{2} + 32T - 1557 \) Copy content Toggle raw display
$13$ \( T^{2} + 28T - 396 \) Copy content Toggle raw display
$17$ \( T^{2} + 154T + 5337 \) Copy content Toggle raw display
$19$ \( T^{2} - 224T + 12211 \) Copy content Toggle raw display
$23$ \( T^{2} + 68T - 657 \) Copy content Toggle raw display
$29$ \( T^{2} + 236T - 15084 \) Copy content Toggle raw display
$31$ \( T^{2} - 196T + 7791 \) Copy content Toggle raw display
$37$ \( T^{2} - 346T - 35339 \) Copy content Toggle raw display
$41$ \( T^{2} + 420T + 38772 \) Copy content Toggle raw display
$43$ \( (T - 172)^{2} \) Copy content Toggle raw display
$47$ \( T^{2} + 84T - 6561 \) Copy content Toggle raw display
$53$ \( T^{2} + 438T - 17307 \) Copy content Toggle raw display
$59$ \( T^{2} - 56T - 49869 \) Copy content Toggle raw display
$61$ \( T^{2} - 98T - 200211 \) Copy content Toggle raw display
$67$ \( T^{2} + 336T + 26411 \) Copy content Toggle raw display
$71$ \( T^{2} + 896T + 84672 \) Copy content Toggle raw display
$73$ \( T^{2} - 966T + 218489 \) Copy content Toggle raw display
$79$ \( T^{2} - 52T - 653817 \) Copy content Toggle raw display
$83$ \( T^{2} + 392T - 248112 \) Copy content Toggle raw display
$89$ \( T^{2} - 294T - 111591 \) Copy content Toggle raw display
$97$ \( T^{2} + 420T - 169612 \) Copy content Toggle raw display
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