Properties

Label 4840.2.a.m
Level $4840$
Weight $2$
Character orbit 4840.a
Self dual yes
Analytic conductor $38.648$
Analytic rank $0$
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] = [4840,2,Mod(1,4840)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(4840, 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("4840.1");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 4840 = 2^{3} \cdot 5 \cdot 11^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 4840.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: \(38.6475945783\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{17}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x - 4 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 440)
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 \(\beta = \frac{1}{2}(1 + \sqrt{17})\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta q^{3} - q^{5} + ( - \beta - 2) q^{7} + (\beta + 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta q^{3} - q^{5} + ( - \beta - 2) q^{7} + (\beta + 1) q^{9} + (2 \beta - 4) q^{13} - \beta q^{15} + 3 \beta q^{17} + (\beta - 4) q^{19} + ( - 3 \beta - 4) q^{21} + (2 \beta - 4) q^{23} + q^{25} + ( - \beta + 4) q^{27} + ( - \beta - 6) q^{29} + (\beta - 4) q^{31} + (\beta + 2) q^{35} + ( - \beta + 10) q^{37} + ( - 2 \beta + 8) q^{39} + (4 \beta + 2) q^{41} + (2 \beta - 2) q^{43} + ( - \beta - 1) q^{45} + ( - 6 \beta + 4) q^{47} + (5 \beta + 1) q^{49} + (3 \beta + 12) q^{51} + (3 \beta + 2) q^{53} + ( - 3 \beta + 4) q^{57} + (2 \beta - 4) q^{59} + (\beta + 10) q^{61} + ( - 4 \beta - 6) q^{63} + ( - 2 \beta + 4) q^{65} + ( - 2 \beta + 8) q^{69} + (3 \beta - 4) q^{71} + ( - 2 \beta + 4) q^{73} + \beta q^{75} + (6 \beta - 4) q^{79} - 7 q^{81} + 6 q^{83} - 3 \beta q^{85} + ( - 7 \beta - 4) q^{87} + (3 \beta + 2) q^{89} - 2 \beta q^{91} + ( - 3 \beta + 4) q^{93} + ( - \beta + 4) q^{95} + (2 \beta - 10) q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + q^{3} - 2 q^{5} - 5 q^{7} + 3 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + q^{3} - 2 q^{5} - 5 q^{7} + 3 q^{9} - 6 q^{13} - q^{15} + 3 q^{17} - 7 q^{19} - 11 q^{21} - 6 q^{23} + 2 q^{25} + 7 q^{27} - 13 q^{29} - 7 q^{31} + 5 q^{35} + 19 q^{37} + 14 q^{39} + 8 q^{41} - 2 q^{43} - 3 q^{45} + 2 q^{47} + 7 q^{49} + 27 q^{51} + 7 q^{53} + 5 q^{57} - 6 q^{59} + 21 q^{61} - 16 q^{63} + 6 q^{65} + 14 q^{69} - 5 q^{71} + 6 q^{73} + q^{75} - 2 q^{79} - 14 q^{81} + 12 q^{83} - 3 q^{85} - 15 q^{87} + 7 q^{89} - 2 q^{91} + 5 q^{93} + 7 q^{95} - 18 q^{97}+O(q^{100}) \) 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
−1.56155
2.56155
0 −1.56155 0 −1.00000 0 −0.438447 0 −0.561553 0
1.2 0 2.56155 0 −1.00000 0 −4.56155 0 3.56155 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(1\)
\(5\) \(1\)
\(11\) \(-1\)

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 4840.2.a.m 2
4.b odd 2 1 9680.2.a.bm 2
11.b odd 2 1 440.2.a.g 2
33.d even 2 1 3960.2.a.bf 2
44.c even 2 1 880.2.a.k 2
55.d odd 2 1 2200.2.a.l 2
55.e even 4 2 2200.2.b.f 4
88.b odd 2 1 3520.2.a.bm 2
88.g even 2 1 3520.2.a.br 2
132.d odd 2 1 7920.2.a.by 2
220.g even 2 1 4400.2.a.bt 2
220.i odd 4 2 4400.2.b.w 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
440.2.a.g 2 11.b odd 2 1
880.2.a.k 2 44.c even 2 1
2200.2.a.l 2 55.d odd 2 1
2200.2.b.f 4 55.e even 4 2
3520.2.a.bm 2 88.b odd 2 1
3520.2.a.br 2 88.g even 2 1
3960.2.a.bf 2 33.d even 2 1
4400.2.a.bt 2 220.g even 2 1
4400.2.b.w 4 220.i odd 4 2
4840.2.a.m 2 1.a even 1 1 trivial
7920.2.a.by 2 132.d odd 2 1
9680.2.a.bm 2 4.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 \(S_{2}^{\mathrm{new}}(\Gamma_0(4840))\):

\( T_{3}^{2} - T_{3} - 4 \) Copy content Toggle raw display
\( T_{7}^{2} + 5T_{7} + 2 \) Copy content Toggle raw display
\( T_{13}^{2} + 6T_{13} - 8 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} - T - 4 \) Copy content Toggle raw display
$5$ \( (T + 1)^{2} \) Copy content Toggle raw display
$7$ \( T^{2} + 5T + 2 \) Copy content Toggle raw display
$11$ \( T^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 6T - 8 \) Copy content Toggle raw display
$17$ \( T^{2} - 3T - 36 \) Copy content Toggle raw display
$19$ \( T^{2} + 7T + 8 \) Copy content Toggle raw display
$23$ \( T^{2} + 6T - 8 \) Copy content Toggle raw display
$29$ \( T^{2} + 13T + 38 \) Copy content Toggle raw display
$31$ \( T^{2} + 7T + 8 \) Copy content Toggle raw display
$37$ \( T^{2} - 19T + 86 \) Copy content Toggle raw display
$41$ \( T^{2} - 8T - 52 \) Copy content Toggle raw display
$43$ \( T^{2} + 2T - 16 \) Copy content Toggle raw display
$47$ \( T^{2} - 2T - 152 \) Copy content Toggle raw display
$53$ \( T^{2} - 7T - 26 \) Copy content Toggle raw display
$59$ \( T^{2} + 6T - 8 \) Copy content Toggle raw display
$61$ \( T^{2} - 21T + 106 \) Copy content Toggle raw display
$67$ \( T^{2} \) Copy content Toggle raw display
$71$ \( T^{2} + 5T - 32 \) Copy content Toggle raw display
$73$ \( T^{2} - 6T - 8 \) Copy content Toggle raw display
$79$ \( T^{2} + 2T - 152 \) Copy content Toggle raw display
$83$ \( (T - 6)^{2} \) Copy content Toggle raw display
$89$ \( T^{2} - 7T - 26 \) Copy content Toggle raw display
$97$ \( T^{2} + 18T + 64 \) Copy content Toggle raw display
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