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Properties

Label 882.4.g.bc
Level $882$
Weight $4$
Character orbit 882.g
Analytic conductor $52.040$
Analytic rank $0$
Dimension $4$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [882,4,Mod(361,882)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(882, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([0, 4]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("882.361");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 882 = 2 \cdot 3^{2} \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 882.g (of order \(3\), degree \(2\), not minimal)

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: no
Analytic conductor: \(52.0396846251\)
Analytic rank: \(0\)
Dimension: \(4\)
Relative dimension: \(2\) over \(\Q(\zeta_{3})\)
Coefficient field: \(\Q(\sqrt{2}, \sqrt{-3})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 2x^{2} + 4 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{25}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

$q$-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 a basis \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - 2 \beta_{2} - 2) q^{2} + 4 \beta_{2} q^{4} + 5 \beta_1 q^{5} + 8 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - 2 \beta_{2} - 2) q^{2} + 4 \beta_{2} q^{4} + 5 \beta_1 q^{5} + 8 q^{8} + ( - 10 \beta_{3} - 10 \beta_1) q^{10} - 40 \beta_{2} q^{11} - 45 \beta_{3} q^{13} + ( - 16 \beta_{2} - 16) q^{16} + (\beta_{3} + \beta_1) q^{17} + 8 \beta_1 q^{19} + 20 \beta_{3} q^{20} - 80 q^{22} + (68 \beta_{2} + 68) q^{23} - 75 \beta_{2} q^{25} - 90 \beta_1 q^{26} - 110 q^{29} + (84 \beta_{3} + 84 \beta_1) q^{31} + 32 \beta_{2} q^{32} - 2 \beta_{3} q^{34} + (20 \beta_{2} + 20) q^{37} + ( - 16 \beta_{3} - 16 \beta_1) q^{38} + 40 \beta_1 q^{40} + 35 \beta_{3} q^{41} - 340 q^{43} + (160 \beta_{2} + 160) q^{44} - 136 \beta_{2} q^{46} - 64 \beta_1 q^{47} - 150 q^{50} + (180 \beta_{3} + 180 \beta_1) q^{52} - 628 \beta_{2} q^{53} - 200 \beta_{3} q^{55} + (220 \beta_{2} + 220) q^{58} + ( - 620 \beta_{3} - 620 \beta_1) q^{59} + 649 \beta_1 q^{61} - 168 \beta_{3} q^{62} + 64 q^{64} + (450 \beta_{2} + 450) q^{65} + 540 \beta_{2} q^{67} - 4 \beta_1 q^{68} + 420 q^{71} + ( - 205 \beta_{3} - 205 \beta_1) q^{73} - 40 \beta_{2} q^{74} + 32 \beta_{3} q^{76} + (760 \beta_{2} + 760) q^{79} + ( - 80 \beta_{3} - 80 \beta_1) q^{80} + 70 \beta_1 q^{82} - 668 \beta_{3} q^{83} - 10 q^{85} + (680 \beta_{2} + 680) q^{86} - 320 \beta_{2} q^{88} - 815 \beta_1 q^{89} - 272 q^{92} + (128 \beta_{3} + 128 \beta_1) q^{94} + 80 \beta_{2} q^{95} - 355 \beta_{3} q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 4 q^{2} - 8 q^{4} + 32 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 4 q^{2} - 8 q^{4} + 32 q^{8} + 80 q^{11} - 32 q^{16} - 320 q^{22} + 136 q^{23} + 150 q^{25} - 440 q^{29} - 64 q^{32} + 40 q^{37} - 1360 q^{43} + 320 q^{44} + 272 q^{46} - 600 q^{50} + 1256 q^{53} + 440 q^{58} + 256 q^{64} + 900 q^{65} - 1080 q^{67} + 1680 q^{71} + 80 q^{74} + 1520 q^{79} - 40 q^{85} + 1360 q^{86} + 640 q^{88} - 1088 q^{92} - 160 q^{95}+O(q^{100}) \) Copy content Toggle raw display

Display 100 coefficients 10 coefficients

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 2x^{2} + 4 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{2} ) / 2 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{3} ) / 2 \) Copy content Toggle raw display

Display \(\nu^j\) in terms of \(\beta_i\)

\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( 2\beta_{2} \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( 2\beta_{3} \) Copy content Toggle raw display

Display \(\beta_i\) in terms of \(\nu^j\)

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/882\mathbb{Z}\right)^\times\).

\(n\) \(199\) \(785\)
\(\chi(n)\) \(-1 - \beta_{2}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
361.1
−0.707107 − 1.22474i
0.707107 + 1.22474i
−0.707107 + 1.22474i
0.707107 − 1.22474i
−1.00000 − 1.73205i 0 −2.00000 + 3.46410i −3.53553 − 6.12372i 0 0 8.00000 0 −7.07107 + 12.2474i
361.2 −1.00000 − 1.73205i 0 −2.00000 + 3.46410i 3.53553 + 6.12372i 0 0 8.00000 0 7.07107 − 12.2474i
667.1 −1.00000 + 1.73205i 0 −2.00000 − 3.46410i −3.53553 + 6.12372i 0 0 8.00000 0 −7.07107 − 12.2474i
667.2 −1.00000 + 1.73205i 0 −2.00000 − 3.46410i 3.53553 − 6.12372i 0 0 8.00000 0 7.07107 + 12.2474i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.b odd 2 1 inner
7.c even 3 1 inner
7.d odd 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 882.4.g.bc 4
3.b odd 2 1 882.4.g.bg 4
7.b odd 2 1 inner 882.4.g.bc 4
7.c even 3 1 882.4.a.be yes 2
7.c even 3 1 inner 882.4.g.bc 4
7.d odd 6 1 882.4.a.be yes 2
7.d odd 6 1 inner 882.4.g.bc 4
21.c even 2 1 882.4.g.bg 4
21.g even 6 1 882.4.a.y ✓ 2
21.g even 6 1 882.4.g.bg 4
21.h odd 6 1 882.4.a.y ✓ 2
21.h odd 6 1 882.4.g.bg 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
882.4.a.y ✓ 2 21.g even 6 1
882.4.a.y ✓ 2 21.h odd 6 1
882.4.a.be yes 2 7.c even 3 1
882.4.a.be yes 2 7.d odd 6 1
882.4.g.bc 4 1.a even 1 1 trivial
882.4.g.bc 4 7.b odd 2 1 inner
882.4.g.bc 4 7.c even 3 1 inner
882.4.g.bc 4 7.d odd 6 1 inner
882.4.g.bg 4 3.b odd 2 1
882.4.g.bg 4 21.c even 2 1
882.4.g.bg 4 21.g even 6 1
882.4.g.bg 4 21.h odd 6 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(882, [\chi])\):

\( T_{5}^{4} + 50T_{5}^{2} + 2500 \) Copy content Toggle raw display
\( T_{11}^{2} - 40T_{11} + 1600 \) Copy content Toggle raw display
\( T_{13}^{2} - 4050 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{2} + 2 T + 4)^{2} \) Copy content Toggle raw display
$3$ \( T^{4} \) Copy content Toggle raw display
$5$ \( T^{4} + 50T^{2} + 2500 \) Copy content Toggle raw display
$7$ \( T^{4} \) Copy content Toggle raw display
$11$ \( (T^{2} - 40 T + 1600)^{2} \) Copy content Toggle raw display
$13$ \( (T^{2} - 4050)^{2} \) Copy content Toggle raw display
$17$ \( T^{4} + 2T^{2} + 4 \) Copy content Toggle raw display
$19$ \( T^{4} + 128 T^{2} + 16384 \) Copy content Toggle raw display
$23$ \( (T^{2} - 68 T + 4624)^{2} \) Copy content Toggle raw display
$29$ \( (T + 110)^{4} \) Copy content Toggle raw display
$31$ \( T^{4} + 14112 T^{2} + 199148544 \) Copy content Toggle raw display
$37$ \( (T^{2} - 20 T + 400)^{2} \) Copy content Toggle raw display
$41$ \( (T^{2} - 2450)^{2} \) Copy content Toggle raw display
$43$ \( (T + 340)^{4} \) Copy content Toggle raw display
$47$ \( T^{4} + 8192 T^{2} + 67108864 \) Copy content Toggle raw display
$53$ \( (T^{2} - 628 T + 394384)^{2} \) Copy content Toggle raw display
$59$ \( T^{4} + \cdots + 591053440000 \) Copy content Toggle raw display
$61$ \( T^{4} + \cdots + 709641129604 \) Copy content Toggle raw display
$67$ \( (T^{2} + 540 T + 291600)^{2} \) Copy content Toggle raw display
$71$ \( (T - 420)^{4} \) Copy content Toggle raw display
$73$ \( T^{4} + \cdots + 7064402500 \) Copy content Toggle raw display
$79$ \( (T^{2} - 760 T + 577600)^{2} \) Copy content Toggle raw display
$83$ \( (T^{2} - 892448)^{2} \) Copy content Toggle raw display
$89$ \( T^{4} + \cdots + 1764779402500 \) Copy content Toggle raw display
$97$ \( (T^{2} - 252050)^{2} \) Copy content Toggle raw display
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