Properties

Label 126.4.d.a
Level $126$
Weight $4$
Character orbit 126.d
Analytic conductor $7.434$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $4$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [126,4,Mod(125,126)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(126, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("126.125");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 126 = 2 \cdot 3^{2} \cdot 7 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 126.d (of order \(2\), degree \(1\), 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: \(7.43424066072\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.849346560000.6
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 50625 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{9}\cdot 3^{4} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-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 a basis \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_1 q^{2} - 4 q^{4} - \beta_{5} q^{5} + (\beta_{7} + 5) q^{7} - 4 \beta_1 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_1 q^{2} - 4 q^{4} - \beta_{5} q^{5} + (\beta_{7} + 5) q^{7} - 4 \beta_1 q^{8} + \beta_{3} q^{10} + ( - 7 \beta_{2} - 15 \beta_1) q^{11} + (2 \beta_{7} - \beta_{4} + 3 \beta_{3}) q^{13} + ( - \beta_{6} - \beta_{5} + \cdots + 5 \beta_1) q^{14}+ \cdots + ( - 6 \beta_{6} - 34 \beta_{5} + \cdots - 257 \beta_1) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 32 q^{4} + 40 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 32 q^{4} + 40 q^{7} + 128 q^{16} + 480 q^{22} - 40 q^{25} - 160 q^{28} - 160 q^{37} + 1040 q^{43} - 672 q^{46} - 2056 q^{49} + 960 q^{58} - 512 q^{64} - 3680 q^{67} + 960 q^{70} + 448 q^{79} + 6720 q^{85} - 1920 q^{88} - 1920 q^{91}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 50625 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 2\nu^{4} ) / 225 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{6} + 225\nu^{2} ) / 1125 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -4\nu^{5} - 60\nu^{3} ) / 225 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -2\nu^{6} + 450\nu^{2} ) / 1125 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -2\nu^{7} + 6750\nu ) / 3375 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -2\nu^{5} + 30\nu^{3} ) / 75 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( \nu^{7} - \nu^{6} + 5\nu^{5} + 75\nu^{3} + 225\nu^{2} + 3375\nu ) / 1125 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( 4\beta_{7} + 6\beta_{5} - 2\beta_{4} + \beta_{3} ) / 24 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 5\beta_{4} + 10\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 10\beta_{6} - 15\beta_{3} ) / 8 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 225\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -150\beta_{6} - 225\beta_{3} ) / 8 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -1125\beta_{4} + 2250\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 4500\beta_{7} - 6750\beta_{5} - 2250\beta_{4} + 1125\beta_{3} ) / 8 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/126\mathbb{Z}\right)^\times\).

\(n\) \(29\) \(73\)
\(\chi(n)\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
125.1
3.57817 1.48213i
1.48213 + 3.57817i
−1.48213 3.57817i
−3.57817 + 1.48213i
3.57817 + 1.48213i
1.48213 3.57817i
−1.48213 + 3.57817i
−3.57817 1.48213i
2.00000i 0 −4.00000 −14.3127 0 9.24264 16.0491i 8.00000i 0 28.6254i
125.2 2.00000i 0 −4.00000 −5.92851 0 0.757359 + 18.5048i 8.00000i 0 11.8570i
125.3 2.00000i 0 −4.00000 5.92851 0 0.757359 18.5048i 8.00000i 0 11.8570i
125.4 2.00000i 0 −4.00000 14.3127 0 9.24264 + 16.0491i 8.00000i 0 28.6254i
125.5 2.00000i 0 −4.00000 −14.3127 0 9.24264 + 16.0491i 8.00000i 0 28.6254i
125.6 2.00000i 0 −4.00000 −5.92851 0 0.757359 18.5048i 8.00000i 0 11.8570i
125.7 2.00000i 0 −4.00000 5.92851 0 0.757359 + 18.5048i 8.00000i 0 11.8570i
125.8 2.00000i 0 −4.00000 14.3127 0 9.24264 16.0491i 8.00000i 0 28.6254i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 125.8
Significant digits:
Format:

Inner twists

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

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 126.4.d.a 8
3.b odd 2 1 inner 126.4.d.a 8
4.b odd 2 1 1008.4.k.c 8
7.b odd 2 1 inner 126.4.d.a 8
7.c even 3 2 882.4.k.c 16
7.d odd 6 2 882.4.k.c 16
12.b even 2 1 1008.4.k.c 8
21.c even 2 1 inner 126.4.d.a 8
21.g even 6 2 882.4.k.c 16
21.h odd 6 2 882.4.k.c 16
28.d even 2 1 1008.4.k.c 8
84.h odd 2 1 1008.4.k.c 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
126.4.d.a 8 1.a even 1 1 trivial
126.4.d.a 8 3.b odd 2 1 inner
126.4.d.a 8 7.b odd 2 1 inner
126.4.d.a 8 21.c even 2 1 inner
882.4.k.c 16 7.c even 3 2
882.4.k.c 16 7.d odd 6 2
882.4.k.c 16 21.g even 6 2
882.4.k.c 16 21.h odd 6 2
1008.4.k.c 8 4.b odd 2 1
1008.4.k.c 8 12.b even 2 1
1008.4.k.c 8 28.d even 2 1
1008.4.k.c 8 84.h odd 2 1

Hecke kernels

This newform subspace is the entire newspace \(S_{4}^{\mathrm{new}}(126, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{2} + 4)^{4} \) Copy content Toggle raw display
$3$ \( T^{8} \) Copy content Toggle raw display
$5$ \( (T^{4} - 240 T^{2} + 7200)^{2} \) Copy content Toggle raw display
$7$ \( (T^{4} - 20 T^{3} + \cdots + 117649)^{2} \) Copy content Toggle raw display
$11$ \( (T^{4} + 3564 T^{2} + 324)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + 8160 T^{2} + 15235200)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} - 20400 T^{2} + 36295200)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} + 13920 T^{2} + 48412800)^{2} \) Copy content Toggle raw display
$23$ \( (T^{4} + 4428 T^{2} + 1726596)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} + 37476 T^{2} + 133125444)^{2} \) Copy content Toggle raw display
$31$ \( (T^{4} + 17280 T^{2} + 37324800)^{2} \) Copy content Toggle raw display
$37$ \( (T^{2} + 40 T - 92912)^{4} \) Copy content Toggle raw display
$41$ \( (T^{4} - 89520 T^{2} + 1999648800)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} - 260 T - 3908)^{4} \) Copy content Toggle raw display
$47$ \( (T^{4} - 265920 T^{2} + 15516172800)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} + 73188 T^{2} + 1318125636)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} - 568320 T^{2} + 15600844800)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + 407040 T^{2} + 2130739200)^{2} \) Copy content Toggle raw display
$67$ \( (T^{2} + 920 T - 141200)^{4} \) Copy content Toggle raw display
$71$ \( (T^{4} + 1100844 T^{2} + 913369284)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} + 255840 T^{2} + 5399683200)^{2} \) Copy content Toggle raw display
$79$ \( (T^{2} - 112 T - 580064)^{4} \) Copy content Toggle raw display
$83$ \( (T^{4} - 945600 T^{2} + 205927948800)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} - 1721520 T^{2} + 168544800)^{2} \) Copy content Toggle raw display
$97$ \( (T^{4} + 2605920 T^{2} + 409114396800)^{2} \) Copy content Toggle raw display
show more
show less