↑

Properties

Label 864.2.c.b.863.8
Level $864$
Weight $2$
Character 864.863
Analytic conductor $6.899$
Analytic rank $0$
Dimension $8$
Inner twists $4$

Related objects

Downloads

Learn more

Show commands: Magma / Pari/GP / SageMath

Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [864,2,Mod(863,864)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)
 
Copy content magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("864.863"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(864, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([1, 0, 1])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 864 = 2^{5} \cdot 3^{3} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 864.c (of order \(2\), degree \(1\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [8,0,0,0,0,0,0,0,0,0,0,0,8] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(13)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(6.89907473464\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: \(\Q(\zeta_{24})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 2^{12} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

Embedding invariants

Embedding label 863.8
Root \(-0.965926 + 0.258819i\) of defining polynomial
Character \(\chi\) \(=\) 864.863
Dual form 864.2.c.b.863.1

$q$-expansion

Copy content comment:q-expansion
 
Copy content sage:f.q_expansion() # note that sage often uses an isomorphic number field
 
Copy content gp:mfcoefs(f, 20)
 
\(f(q)\) \(=\) \(q+3.86370i q^{5} +3.73205i q^{7} -1.03528 q^{11} +4.46410 q^{13} -1.79315i q^{17} -1.73205i q^{19} -8.76268 q^{23} -9.92820 q^{25} +7.72741i q^{29} -7.46410i q^{31} -14.4195 q^{35} +0.464102 q^{37} +7.72741i q^{41} -0.535898i q^{43} +4.62158 q^{47} -6.92820 q^{49} -3.58630i q^{53} -4.00000i q^{55} +12.3490 q^{59} +11.3923 q^{61} +17.2480i q^{65} +6.26795i q^{67} -11.3137 q^{71} -3.92820 q^{73} -3.86370i q^{77} +4.80385i q^{79} -2.07055 q^{83} +6.92820 q^{85} -1.79315i q^{89} +16.6603i q^{91} +6.69213 q^{95} +7.00000 q^{97} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 8 q^{13} - 24 q^{25} - 24 q^{37} + 8 q^{61} + 24 q^{73} + 56 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/864\mathbb{Z}\right)^\times\).

\(n\) \(325\) \(353\) \(703\)
\(\chi(n)\) \(1\) \(-1\) \(-1\)

Coefficient data

For each \(n\) we display the coefficients of the \(q\)-expansion \(a_n\), the Satake parameters \(\alpha_p\), and the Satake angles \(\theta_p = \textrm{Arg}(\alpha_p)\). You can download additional coefficients here.



Currently showing only \(a_p\); display all \(a_n\) Currently showing all \(a_n\); display only \(a_p\)
Significant digits:
\(n\) \(a_n\) \(a_n / n^{(k-1)/2}\) \( \alpha_n \) \( \theta_n \)
\(p\) \(a_p\) \(a_p / p^{(k-1)/2}\) \( \alpha_p\) \( \theta_p \)
\(2\) 0 0
\(3\) 0 0
\(4\) 0 0
\(5\) 3.86370i 1.72790i 0.503577 + 0.863950i \(0.332017\pi\)
−0.503577 + 0.863950i \(0.667983\pi\)
\(6\) 0 0
\(7\) 3.73205i 1.41058i 0.708918 + 0.705291i \(0.249184\pi\)
−0.708918 + 0.705291i \(0.750816\pi\)
\(8\) 0 0
\(9\) 0 0
\(10\) 0 0
\(11\) −1.03528 −0.312148 −0.156074 − 0.987745i \(-0.549884\pi\)
−0.156074 + 0.987745i \(0.549884\pi\)
\(12\) 0 0
\(13\) 4.46410 1.23812 0.619060 − 0.785344i \(-0.287514\pi\)
0.619060 + 0.785344i \(0.287514\pi\)
\(14\) 0 0
\(15\) 0 0
\(16\) 0 0
\(17\) − 1.79315i − 0.434903i −0.976071 − 0.217451i \(-0.930226\pi\)
0.976071 − 0.217451i \(-0.0697744\pi\)
\(18\) 0 0
\(19\) − 1.73205i − 0.397360i −0.980064 − 0.198680i \(-0.936335\pi\)
0.980064 − 0.198680i \(-0.0636654\pi\)
\(20\) 0 0
\(21\) 0 0
\(22\) 0 0
\(23\) −8.76268 −1.82715 −0.913573 − 0.406675i \(-0.866688\pi\)
−0.913573 + 0.406675i \(0.866688\pi\)
\(24\) 0 0
\(25\) −9.92820 −1.98564
\(26\) 0 0
\(27\) 0 0
\(28\) 0 0
\(29\) 7.72741i 1.43494i 0.696588 + 0.717472i \(0.254701\pi\)
−0.696588 + 0.717472i \(0.745299\pi\)
\(30\) 0 0
\(31\) − 7.46410i − 1.34059i −0.742094 − 0.670296i \(-0.766167\pi\)
0.742094 − 0.670296i \(-0.233833\pi\)
\(32\) 0 0
\(33\) 0 0
\(34\) 0 0
\(35\) −14.4195 −2.43735
\(36\) 0 0
\(37\) 0.464102 0.0762978 0.0381489 − 0.999272i \(-0.487854\pi\)
0.0381489 + 0.999272i \(0.487854\pi\)
\(38\) 0 0
\(39\) 0 0
\(40\) 0 0
\(41\) 7.72741i 1.20682i 0.797432 + 0.603409i \(0.206191\pi\)
−0.797432 + 0.603409i \(0.793809\pi\)
\(42\) 0 0
\(43\) − 0.535898i − 0.0817237i −0.999165 − 0.0408619i \(-0.986990\pi\)
0.999165 − 0.0408619i \(-0.0130104\pi\)
\(44\) 0 0
\(45\) 0 0
\(46\) 0 0
\(47\) 4.62158 0.674126 0.337063 − 0.941482i \(-0.390566\pi\)
0.337063 + 0.941482i \(0.390566\pi\)
\(48\) 0 0
\(49\) −6.92820 −0.989743
\(50\) 0 0
\(51\) 0 0
\(52\) 0 0
\(53\) − 3.58630i − 0.492616i −0.969192 − 0.246308i \(-0.920782\pi\)
0.969192 − 0.246308i \(-0.0792175\pi\)
\(54\) 0 0
\(55\) − 4.00000i − 0.539360i
\(56\) 0 0
\(57\) 0 0
\(58\) 0 0
\(59\) 12.3490 1.60770 0.803850 − 0.594831i \(-0.202781\pi\)
0.803850 + 0.594831i \(0.202781\pi\)
\(60\) 0 0
\(61\) 11.3923 1.45864 0.729318 − 0.684175i \(-0.239838\pi\)
0.729318 + 0.684175i \(0.239838\pi\)
\(62\) 0 0
\(63\) 0 0
\(64\) 0 0
\(65\) 17.2480i 2.13935i
\(66\) 0 0
\(67\) 6.26795i 0.765752i 0.923800 + 0.382876i \(0.125066\pi\)
−0.923800 + 0.382876i \(0.874934\pi\)
\(68\) 0 0
\(69\) 0 0
\(70\) 0 0
\(71\) −11.3137 −1.34269 −0.671345 − 0.741145i \(-0.734283\pi\)
−0.671345 + 0.741145i \(0.734283\pi\)
\(72\) 0 0
\(73\) −3.92820 −0.459761 −0.229881 − 0.973219i \(-0.573834\pi\)
−0.229881 + 0.973219i \(0.573834\pi\)
\(74\) 0 0
\(75\) 0 0
\(76\) 0 0
\(77\) − 3.86370i − 0.440310i
\(78\) 0 0
\(79\) 4.80385i 0.540475i 0.962794 + 0.270238i \(0.0871022\pi\)
−0.962794 + 0.270238i \(0.912898\pi\)
\(80\) 0 0
\(81\) 0 0
\(82\) 0 0
\(83\) −2.07055 −0.227273 −0.113636 − 0.993522i \(-0.536250\pi\)
−0.113636 + 0.993522i \(0.536250\pi\)
\(84\) 0 0
\(85\) 6.92820 0.751469
\(86\) 0 0
\(87\) 0 0
\(88\) 0 0
\(89\) − 1.79315i − 0.190074i −0.995474 − 0.0950368i \(-0.969703\pi\)
0.995474 − 0.0950368i \(-0.0302969\pi\)
\(90\) 0 0
\(91\) 16.6603i 1.74647i
\(92\) 0 0
\(93\) 0 0
\(94\) 0 0
\(95\) 6.69213 0.686598
\(96\) 0 0
\(97\) 7.00000 0.710742 0.355371 − 0.934725i \(-0.384354\pi\)
0.355371 + 0.934725i \(0.384354\pi\)
\(98\) 0 0
\(99\) 0 0
Currently showing only \(a_p\); display all \(a_n\) Currently showing all \(a_n\); display only \(a_p\)

Twists

       By twisting character
Char Parity Ord Type Twist Min Dim
1.1 even 1 trivial 864.2.c.b.863.8 yes 8
3.2 odd 2 inner 864.2.c.b.863.2 yes 8
4.3 odd 2 inner 864.2.c.b.863.7 yes 8
8.3 odd 2 1728.2.c.f.1727.1 8
8.5 even 2 1728.2.c.f.1727.2 8
9.2 odd 6 2592.2.s.g.863.4 8
9.4 even 3 2592.2.s.c.1727.4 8
9.5 odd 6 2592.2.s.c.1727.1 8
9.7 even 3 2592.2.s.g.863.1 8
12.11 even 2 inner 864.2.c.b.863.1 ✓ 8
24.5 odd 2 1728.2.c.f.1727.8 8
24.11 even 2 1728.2.c.f.1727.7 8
36.7 odd 6 2592.2.s.c.863.1 8
36.11 even 6 2592.2.s.c.863.4 8
36.23 even 6 2592.2.s.g.1727.1 8
36.31 odd 6 2592.2.s.g.1727.4 8
    
        By twisted newform
Twist Min Dim Char Parity Ord Type
864.2.c.b.863.1 ✓ 8 12.11 even 2 inner
864.2.c.b.863.2 yes 8 3.2 odd 2 inner
864.2.c.b.863.7 yes 8 4.3 odd 2 inner
864.2.c.b.863.8 yes 8 1.1 even 1 trivial
1728.2.c.f.1727.1 8 8.3 odd 2
1728.2.c.f.1727.2 8 8.5 even 2
1728.2.c.f.1727.7 8 24.11 even 2
1728.2.c.f.1727.8 8 24.5 odd 2
2592.2.s.c.863.1 8 36.7 odd 6
2592.2.s.c.863.4 8 36.11 even 6
2592.2.s.c.1727.1 8 9.5 odd 6
2592.2.s.c.1727.4 8 9.4 even 3
2592.2.s.g.863.1 8 9.7 even 3
2592.2.s.g.863.4 8 9.2 odd 6
2592.2.s.g.1727.1 8 36.23 even 6
2592.2.s.g.1727.4 8 36.31 odd 6