Properties

Label 460.2.g.b
Level $460$
Weight $2$
Character orbit 460.g
Analytic conductor $3.673$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $8$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [460,2,Mod(459,460)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(460, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("460.459");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 460 = 2^{2} \cdot 5 \cdot 23 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 460.g (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: \(3.67311849298\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.207360000.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 6x^{6} + 32x^{4} + 24x^{2} + 16 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{8} \)
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.

\(f(q)\) \(=\) \( q - \beta_{2} q^{2} + ( - \beta_{4} + \beta_{2}) q^{3} + ( - \beta_{3} - 1) q^{4} + \beta_1 q^{5} + (2 \beta_{3} - 2) q^{6} + \beta_{6} q^{7} + ( - \beta_{4} + \beta_{2}) q^{8} + 5 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{2} q^{2} + ( - \beta_{4} + \beta_{2}) q^{3} + ( - \beta_{3} - 1) q^{4} + \beta_1 q^{5} + (2 \beta_{3} - 2) q^{6} + \beta_{6} q^{7} + ( - \beta_{4} + \beta_{2}) q^{8} + 5 q^{9} + \beta_{5} q^{10} + (2 \beta_{4} + 2 \beta_{2}) q^{12} + (\beta_{4} + 3 \beta_{2}) q^{13} - \beta_{7} q^{14} + (\beta_{7} - \beta_{5}) q^{15} + (2 \beta_{3} - 2) q^{16} - \beta_1 q^{17} - 5 \beta_{2} q^{18} + ( - \beta_{7} + \beta_{5}) q^{19} + ( - \beta_{6} - \beta_1) q^{20} + (\beta_{7} + 3 \beta_{5}) q^{21} + ( - \beta_{6} + \beta_{4} - \beta_{2}) q^{23} + 8 q^{24} + 5 q^{25} + (2 \beta_{3} + 6) q^{26} + ( - 2 \beta_{4} + 2 \beta_{2}) q^{27} + ( - \beta_{6} + 3 \beta_1) q^{28} + 3 q^{29} + (2 \beta_{6} - 2 \beta_1) q^{30} + \beta_{3} q^{31} + (2 \beta_{4} + 2 \beta_{2}) q^{32} - \beta_{5} q^{34} + 5 \beta_{3} q^{35} + ( - 5 \beta_{3} - 5) q^{36} + 3 \beta_1 q^{37} + ( - 2 \beta_{6} + 2 \beta_1) q^{38} - 8 \beta_{3} q^{39} + (\beta_{7} - \beta_{5}) q^{40} - 9 q^{41} + ( - 2 \beta_{6} - 6 \beta_1) q^{42} + 2 \beta_{6} q^{43} + 5 \beta_1 q^{45} + (\beta_{7} - 2 \beta_{3} + 2) q^{46} + ( - 2 \beta_{4} + 2 \beta_{2}) q^{47} - 8 \beta_{2} q^{48} - 8 q^{49} - 5 \beta_{2} q^{50} + ( - \beta_{7} + \beta_{5}) q^{51} + (2 \beta_{4} - 6 \beta_{2}) q^{52} - \beta_1 q^{53} + (4 \beta_{3} - 4) q^{54} + (\beta_{7} + 3 \beta_{5}) q^{56} - 8 \beta_1 q^{57} - 3 \beta_{2} q^{58} + 5 \beta_{3} q^{59} + ( - 2 \beta_{7} - 2 \beta_{5}) q^{60} + ( - \beta_{7} - 3 \beta_{5}) q^{61} + \beta_{4} q^{62} + 5 \beta_{6} q^{63} + 8 q^{64} + ( - \beta_{7} - 3 \beta_{5}) q^{65} - 3 \beta_{6} q^{67} + (\beta_{6} + \beta_1) q^{68} + ( - \beta_{7} - 3 \beta_{5} - 8) q^{69} + 5 \beta_{4} q^{70} + \beta_{3} q^{71} + ( - 5 \beta_{4} + 5 \beta_{2}) q^{72} + (\beta_{4} + 3 \beta_{2}) q^{73} + 3 \beta_{5} q^{74} + ( - 5 \beta_{4} + 5 \beta_{2}) q^{75} + (2 \beta_{7} + 2 \beta_{5}) q^{76} - 8 \beta_{4} q^{78} + ( - 2 \beta_{7} + 2 \beta_{5}) q^{79} + (2 \beta_{6} - 2 \beta_1) q^{80} + q^{81} + 9 \beta_{2} q^{82} + \beta_{6} q^{83} + (2 \beta_{7} - 6 \beta_{5}) q^{84} - 5 q^{85} - 2 \beta_{7} q^{86} + ( - 3 \beta_{4} + 3 \beta_{2}) q^{87} + (\beta_{7} + 3 \beta_{5}) q^{89} + 5 \beta_{5} q^{90} + (3 \beta_{7} - 3 \beta_{5}) q^{91} + (\beta_{6} - 2 \beta_{4} + \cdots - 3 \beta_1) q^{92}+ \cdots + 8 \beta_{2} q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 8 q^{4} - 16 q^{6} + 40 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 8 q^{4} - 16 q^{6} + 40 q^{9} - 16 q^{16} + 64 q^{24} + 40 q^{25} + 48 q^{26} + 24 q^{29} - 40 q^{36} - 72 q^{41} + 16 q^{46} - 64 q^{49} - 32 q^{54} + 64 q^{64} - 64 q^{69} + 8 q^{81} - 40 q^{85} - 32 q^{94} - 64 q^{96}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 6x^{6} + 32x^{4} + 24x^{2} + 16 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{6} - 72 ) / 32 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 5\nu^{7} + 32\nu^{5} + 160\nu^{3} + 120\nu ) / 64 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 3\nu^{6} + 16\nu^{4} + 96\nu^{2} + 40 ) / 32 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -7\nu^{7} - 32\nu^{5} - 160\nu^{3} + 88\nu ) / 64 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 11\nu^{7} + 64\nu^{5} + 352\nu^{3} + 264\nu ) / 64 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -\nu^{6} - 6\nu^{4} - 28\nu^{2} - 12 ) / 4 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -13\nu^{7} - 64\nu^{5} - 352\nu^{3} + 200\nu ) / 64 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{7} + \beta_{5} - \beta_{4} - \beta_{2} ) / 4 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{6} + 3\beta_{3} - \beta _1 - 3 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( -\beta_{7} + \beta_{5} + 2\beta_{4} - 2\beta_{2} \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( -3\beta_{6} - 7\beta_{3} - 3\beta _1 - 7 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( -10\beta_{5} + 22\beta_{2} \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( 32\beta _1 + 72 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( 26\beta_{7} + 26\beta_{5} - 58\beta_{4} - 58\beta_{2} \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/460\mathbb{Z}\right)^\times\).

\(n\) \(231\) \(277\) \(281\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
459.1
−0.437016 + 0.756934i
1.14412 1.98168i
−0.437016 0.756934i
1.14412 + 1.98168i
0.437016 + 0.756934i
−1.14412 1.98168i
0.437016 0.756934i
−1.14412 + 1.98168i
−0.707107 1.22474i 2.82843 −1.00000 + 1.73205i −2.23607 −2.00000 3.46410i 3.87298i 2.82843 5.00000 1.58114 + 2.73861i
459.2 −0.707107 1.22474i 2.82843 −1.00000 + 1.73205i 2.23607 −2.00000 3.46410i 3.87298i 2.82843 5.00000 −1.58114 2.73861i
459.3 −0.707107 + 1.22474i 2.82843 −1.00000 1.73205i −2.23607 −2.00000 + 3.46410i 3.87298i 2.82843 5.00000 1.58114 2.73861i
459.4 −0.707107 + 1.22474i 2.82843 −1.00000 1.73205i 2.23607 −2.00000 + 3.46410i 3.87298i 2.82843 5.00000 −1.58114 + 2.73861i
459.5 0.707107 1.22474i −2.82843 −1.00000 1.73205i −2.23607 −2.00000 + 3.46410i 3.87298i −2.82843 5.00000 −1.58114 + 2.73861i
459.6 0.707107 1.22474i −2.82843 −1.00000 1.73205i 2.23607 −2.00000 + 3.46410i 3.87298i −2.82843 5.00000 1.58114 2.73861i
459.7 0.707107 + 1.22474i −2.82843 −1.00000 + 1.73205i −2.23607 −2.00000 3.46410i 3.87298i −2.82843 5.00000 −1.58114 2.73861i
459.8 0.707107 + 1.22474i −2.82843 −1.00000 + 1.73205i 2.23607 −2.00000 3.46410i 3.87298i −2.82843 5.00000 1.58114 + 2.73861i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 459.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
5.b even 2 1 inner
20.d odd 2 1 inner
23.b odd 2 1 inner
92.b even 2 1 inner
115.c odd 2 1 inner
460.g even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 460.2.g.b 8
4.b odd 2 1 inner 460.2.g.b 8
5.b even 2 1 inner 460.2.g.b 8
20.d odd 2 1 inner 460.2.g.b 8
23.b odd 2 1 inner 460.2.g.b 8
92.b even 2 1 inner 460.2.g.b 8
115.c odd 2 1 inner 460.2.g.b 8
460.g even 2 1 inner 460.2.g.b 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
460.2.g.b 8 1.a even 1 1 trivial
460.2.g.b 8 4.b odd 2 1 inner
460.2.g.b 8 5.b even 2 1 inner
460.2.g.b 8 20.d odd 2 1 inner
460.2.g.b 8 23.b odd 2 1 inner
460.2.g.b 8 92.b even 2 1 inner
460.2.g.b 8 115.c odd 2 1 inner
460.2.g.b 8 460.g even 2 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{2} - 8 \) acting on \(S_{2}^{\mathrm{new}}(460, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{4} + 2 T^{2} + 4)^{2} \) Copy content Toggle raw display
$3$ \( (T^{2} - 8)^{4} \) Copy content Toggle raw display
$5$ \( (T^{2} - 5)^{4} \) Copy content Toggle raw display
$7$ \( (T^{2} + 15)^{4} \) Copy content Toggle raw display
$11$ \( T^{8} \) Copy content Toggle raw display
$13$ \( (T^{2} + 24)^{4} \) Copy content Toggle raw display
$17$ \( (T^{2} - 5)^{4} \) Copy content Toggle raw display
$19$ \( (T^{2} - 40)^{4} \) Copy content Toggle raw display
$23$ \( (T^{4} + 14 T^{2} + 529)^{2} \) Copy content Toggle raw display
$29$ \( (T - 3)^{8} \) Copy content Toggle raw display
$31$ \( (T^{2} + 3)^{4} \) Copy content Toggle raw display
$37$ \( (T^{2} - 45)^{4} \) Copy content Toggle raw display
$41$ \( (T + 9)^{8} \) Copy content Toggle raw display
$43$ \( (T^{2} + 60)^{4} \) Copy content Toggle raw display
$47$ \( (T^{2} - 32)^{4} \) Copy content Toggle raw display
$53$ \( (T^{2} - 5)^{4} \) Copy content Toggle raw display
$59$ \( (T^{2} + 75)^{4} \) Copy content Toggle raw display
$61$ \( (T^{2} + 120)^{4} \) Copy content Toggle raw display
$67$ \( (T^{2} + 135)^{4} \) Copy content Toggle raw display
$71$ \( (T^{2} + 3)^{4} \) Copy content Toggle raw display
$73$ \( (T^{2} + 24)^{4} \) Copy content Toggle raw display
$79$ \( (T^{2} - 160)^{4} \) Copy content Toggle raw display
$83$ \( (T^{2} + 15)^{4} \) Copy content Toggle raw display
$89$ \( (T^{2} + 120)^{4} \) Copy content Toggle raw display
$97$ \( (T^{2} - 180)^{4} \) Copy content Toggle raw display
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