Properties

Label 7840.2.a.w
Level $7840$
Weight $2$
Character orbit 7840.a
Self dual yes
Analytic conductor $62.603$
Analytic rank $1$
Dimension $1$
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] = [7840,2,Mod(1,7840)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(7840, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0, 0, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("7840.1");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 7840 = 2^{5} \cdot 5 \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 7840.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: \(62.6027151847\)
Analytic rank: \(1\)
Dimension: \(1\)
Coefficient field: \(\mathbb{Q}\)
Coefficient ring: \(\mathbb{Z}\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 160)
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)
 
\(f(q)\) \(=\) \( q + 2 q^{3} + q^{5} + q^{9} - 4 q^{11} + 6 q^{13} + 2 q^{15} - 2 q^{17} - 8 q^{19} - 6 q^{23} + q^{25} - 4 q^{27} - 2 q^{29} - 4 q^{31} - 8 q^{33} + 2 q^{37} + 12 q^{39} + 10 q^{41} - 2 q^{43} + q^{45}+ \cdots - 4 q^{99}+O(q^{100}) \) 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
0
0 2.00000 0 1.00000 0 0 0 1.00000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \( +1 \)
\(5\) \( -1 \)
\(7\) \( -1 \)

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 7840.2.a.w 1
4.b odd 2 1 7840.2.a.e 1
7.b odd 2 1 160.2.a.a 1
21.c even 2 1 1440.2.a.i 1
28.d even 2 1 160.2.a.b yes 1
35.c odd 2 1 800.2.a.i 1
35.f even 4 2 800.2.c.a 2
56.e even 2 1 320.2.a.b 1
56.h odd 2 1 320.2.a.e 1
84.h odd 2 1 1440.2.a.l 1
105.g even 2 1 7200.2.a.bp 1
105.k odd 4 2 7200.2.f.w 2
112.j even 4 2 1280.2.d.b 2
112.l odd 4 2 1280.2.d.h 2
140.c even 2 1 800.2.a.a 1
140.j odd 4 2 800.2.c.b 2
168.e odd 2 1 2880.2.a.o 1
168.i even 2 1 2880.2.a.d 1
280.c odd 2 1 1600.2.a.e 1
280.n even 2 1 1600.2.a.t 1
280.s even 4 2 1600.2.c.f 2
280.y odd 4 2 1600.2.c.c 2
420.o odd 2 1 7200.2.a.l 1
420.w even 4 2 7200.2.f.g 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
160.2.a.a 1 7.b odd 2 1
160.2.a.b yes 1 28.d even 2 1
320.2.a.b 1 56.e even 2 1
320.2.a.e 1 56.h odd 2 1
800.2.a.a 1 140.c even 2 1
800.2.a.i 1 35.c odd 2 1
800.2.c.a 2 35.f even 4 2
800.2.c.b 2 140.j odd 4 2
1280.2.d.b 2 112.j even 4 2
1280.2.d.h 2 112.l odd 4 2
1440.2.a.i 1 21.c even 2 1
1440.2.a.l 1 84.h odd 2 1
1600.2.a.e 1 280.c odd 2 1
1600.2.a.t 1 280.n even 2 1
1600.2.c.c 2 280.y odd 4 2
1600.2.c.f 2 280.s even 4 2
2880.2.a.d 1 168.i even 2 1
2880.2.a.o 1 168.e odd 2 1
7200.2.a.l 1 420.o odd 2 1
7200.2.a.bp 1 105.g even 2 1
7200.2.f.g 2 420.w even 4 2
7200.2.f.w 2 105.k odd 4 2
7840.2.a.e 1 4.b odd 2 1
7840.2.a.w 1 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 \(S_{2}^{\mathrm{new}}(\Gamma_0(7840))\):

\( T_{3} - 2 \) Copy content Toggle raw display
\( T_{11} + 4 \) Copy content Toggle raw display
\( T_{13} - 6 \) Copy content Toggle raw display
\( T_{19} + 8 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T \) Copy content Toggle raw display
$3$ \( T - 2 \) Copy content Toggle raw display
$5$ \( T - 1 \) Copy content Toggle raw display
$7$ \( T \) Copy content Toggle raw display
$11$ \( T + 4 \) Copy content Toggle raw display
$13$ \( T - 6 \) Copy content Toggle raw display
$17$ \( T + 2 \) Copy content Toggle raw display
$19$ \( T + 8 \) Copy content Toggle raw display
$23$ \( T + 6 \) Copy content Toggle raw display
$29$ \( T + 2 \) Copy content Toggle raw display
$31$ \( T + 4 \) Copy content Toggle raw display
$37$ \( T - 2 \) Copy content Toggle raw display
$41$ \( T - 10 \) Copy content Toggle raw display
$43$ \( T + 2 \) Copy content Toggle raw display
$47$ \( T - 2 \) Copy content Toggle raw display
$53$ \( T - 2 \) Copy content Toggle raw display
$59$ \( T \) Copy content Toggle raw display
$61$ \( T + 2 \) Copy content Toggle raw display
$67$ \( T + 6 \) Copy content Toggle raw display
$71$ \( T + 12 \) Copy content Toggle raw display
$73$ \( T + 10 \) Copy content Toggle raw display
$79$ \( T + 8 \) Copy content Toggle raw display
$83$ \( T - 10 \) Copy content Toggle raw display
$89$ \( T - 6 \) Copy content Toggle raw display
$97$ \( T + 10 \) Copy content Toggle raw display
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