Properties

Label 6400.2.a.by.1.1
Level $6400$
Weight $2$
Character 6400.1
Self dual yes
Analytic conductor $51.104$
Analytic rank $0$
Dimension $2$
CM discriminant -8
Inner twists $4$

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Show commands: Magma / Pari/GP / SageMath

Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [6400,2,Mod(1,6400)] 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("6400.1"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(6400, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 0])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 6400 = 2^{8} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 6400.a (trivial)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [2,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,-12,0,0,0,0,0,0,0,0,0,0,0,0, 0,0] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(31)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: yes
Analytic conductor: \(51.1042572936\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\zeta_{8})^+\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - 2 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 2 \)
Twist minimal: no (minimal twist has level 128)
Fricke sign: \(-1\)
Sato-Tate group: $N(\mathrm{U}(1))$

Embedding invariants

Embedding label 1.1
Root \(-1.41421\) of defining polynomial
Character \(\chi\) \(=\) 6400.1

$q$-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)
 
\(f(q)\) \(=\) \(q-2.82843 q^{3} +5.00000 q^{9} -2.82843 q^{11} -6.00000 q^{17} -8.48528 q^{19} -5.65685 q^{27} +8.00000 q^{33} +6.00000 q^{41} -8.48528 q^{43} -7.00000 q^{49} +16.9706 q^{51} +24.0000 q^{57} -14.1421 q^{59} +8.48528 q^{67} -2.00000 q^{73} +1.00000 q^{81} -2.82843 q^{83} +18.0000 q^{89} +10.0000 q^{97} -14.1421 q^{99} +O(q^{100})\)
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 10 q^{9} - 12 q^{17} + 16 q^{33} + 12 q^{41} - 14 q^{49} + 48 q^{57} - 4 q^{73} + 2 q^{81} + 36 q^{89} + 20 q^{97}+O(q^{100}) \) Copy content Toggle raw display

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
\(3\) −2.82843 −1.63299 −0.816497 − 0.577350i \(-0.804087\pi\)
−0.816497 + 0.577350i \(0.804087\pi\)
\(4\) 0 0
\(5\) 0 0
\(6\) 0 0
\(7\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(8\) 0 0
\(9\) 5.00000 1.66667
\(10\) 0 0
\(11\) −2.82843 −0.852803 −0.426401 − 0.904534i \(-0.640219\pi\)
−0.426401 + 0.904534i \(0.640219\pi\)
\(12\) 0 0
\(13\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(14\) 0 0
\(15\) 0 0
\(16\) 0 0
\(17\) −6.00000 −1.45521 −0.727607 − 0.685994i \(-0.759367\pi\)
−0.727607 + 0.685994i \(0.759367\pi\)
\(18\) 0 0
\(19\) −8.48528 −1.94666 −0.973329 − 0.229416i \(-0.926318\pi\)
−0.973329 + 0.229416i \(0.926318\pi\)
\(20\) 0 0
\(21\) 0 0
\(22\) 0 0
\(23\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(24\) 0 0
\(25\) 0 0
\(26\) 0 0
\(27\) −5.65685 −1.08866
\(28\) 0 0
\(29\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(30\) 0 0
\(31\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(32\) 0 0
\(33\) 8.00000 1.39262
\(34\) 0 0
\(35\) 0 0
\(36\) 0 0
\(37\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(38\) 0 0
\(39\) 0 0
\(40\) 0 0
\(41\) 6.00000 0.937043 0.468521 − 0.883452i \(-0.344787\pi\)
0.468521 + 0.883452i \(0.344787\pi\)
\(42\) 0 0
\(43\) −8.48528 −1.29399 −0.646997 − 0.762493i \(-0.723975\pi\)
−0.646997 + 0.762493i \(0.723975\pi\)
\(44\) 0 0
\(45\) 0 0
\(46\) 0 0
\(47\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(48\) 0 0
\(49\) −7.00000 −1.00000
\(50\) 0 0
\(51\) 16.9706 2.37635
\(52\) 0 0
\(53\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(54\) 0 0
\(55\) 0 0
\(56\) 0 0
\(57\) 24.0000 3.17888
\(58\) 0 0
\(59\) −14.1421 −1.84115 −0.920575 − 0.390567i \(-0.872279\pi\)
−0.920575 + 0.390567i \(0.872279\pi\)
\(60\) 0 0
\(61\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(62\) 0 0
\(63\) 0 0
\(64\) 0 0
\(65\) 0 0
\(66\) 0 0
\(67\) 8.48528 1.03664 0.518321 − 0.855186i \(-0.326557\pi\)
0.518321 + 0.855186i \(0.326557\pi\)
\(68\) 0 0
\(69\) 0 0
\(70\) 0 0
\(71\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(72\) 0 0
\(73\) −2.00000 −0.234082 −0.117041 − 0.993127i \(-0.537341\pi\)
−0.117041 + 0.993127i \(0.537341\pi\)
\(74\) 0 0
\(75\) 0 0
\(76\) 0 0
\(77\) 0 0
\(78\) 0 0
\(79\) 0 0 − 1.00000i \(-0.5\pi\)
1.00000i \(0.5\pi\)
\(80\) 0 0
\(81\) 1.00000 0.111111
\(82\) 0 0
\(83\) −2.82843 −0.310460 −0.155230 − 0.987878i \(-0.549612\pi\)
−0.155230 + 0.987878i \(0.549612\pi\)
\(84\) 0 0
\(85\) 0 0
\(86\) 0 0
\(87\) 0 0
\(88\) 0 0
\(89\) 18.0000 1.90800 0.953998 − 0.299813i \(-0.0969242\pi\)
0.953998 + 0.299813i \(0.0969242\pi\)
\(90\) 0 0
\(91\) 0 0
\(92\) 0 0
\(93\) 0 0
\(94\) 0 0
\(95\) 0 0
\(96\) 0 0
\(97\) 10.0000 1.01535 0.507673 − 0.861550i \(-0.330506\pi\)
0.507673 + 0.861550i \(0.330506\pi\)
\(98\) 0 0
\(99\) −14.1421 −1.42134
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 6400.2.a.by.1.1 2
4.3 odd 2 inner 6400.2.a.by.1.2 2
5.4 even 2 256.2.a.e.1.2 2
8.3 odd 2 CM 6400.2.a.by.1.1 2
8.5 even 2 inner 6400.2.a.by.1.2 2
15.14 odd 2 2304.2.a.t.1.2 2
16.3 odd 4 3200.2.d.c.1601.2 2
16.5 even 4 3200.2.d.c.1601.2 2
16.11 odd 4 3200.2.d.c.1601.1 2
16.13 even 4 3200.2.d.c.1601.1 2
20.19 odd 2 256.2.a.e.1.1 2
40.19 odd 2 256.2.a.e.1.2 2
40.29 even 2 256.2.a.e.1.1 2
60.59 even 2 2304.2.a.t.1.1 2
80.3 even 4 3200.2.f.o.449.1 4
80.13 odd 4 3200.2.f.o.449.4 4
80.19 odd 4 128.2.b.a.65.1 ✓ 2
80.27 even 4 3200.2.f.o.449.2 4
80.29 even 4 128.2.b.a.65.2 yes 2
80.37 odd 4 3200.2.f.o.449.3 4
80.43 even 4 3200.2.f.o.449.4 4
80.53 odd 4 3200.2.f.o.449.1 4
80.59 odd 4 128.2.b.a.65.2 yes 2
80.67 even 4 3200.2.f.o.449.3 4
80.69 even 4 128.2.b.a.65.1 ✓ 2
80.77 odd 4 3200.2.f.o.449.2 4
120.29 odd 2 2304.2.a.t.1.1 2
120.59 even 2 2304.2.a.t.1.2 2
160.19 odd 8 1024.2.e.f.257.1 2
160.29 even 8 1024.2.e.f.257.1 2
160.59 odd 8 1024.2.e.f.769.1 2
160.69 even 8 1024.2.e.a.769.1 2
160.99 odd 8 1024.2.e.a.257.1 2
160.109 even 8 1024.2.e.a.257.1 2
160.139 odd 8 1024.2.e.a.769.1 2
160.149 even 8 1024.2.e.f.769.1 2
240.29 odd 4 1152.2.d.c.577.1 2
240.59 even 4 1152.2.d.c.577.1 2
240.149 odd 4 1152.2.d.c.577.2 2
240.179 even 4 1152.2.d.c.577.2 2
    
        By twisted newform
Twist Min Dim Char Parity Ord Type
128.2.b.a.65.1 ✓ 2 80.19 odd 4
128.2.b.a.65.1 ✓ 2 80.69 even 4
128.2.b.a.65.2 yes 2 80.29 even 4
128.2.b.a.65.2 yes 2 80.59 odd 4
256.2.a.e.1.1 2 20.19 odd 2
256.2.a.e.1.1 2 40.29 even 2
256.2.a.e.1.2 2 5.4 even 2
256.2.a.e.1.2 2 40.19 odd 2
1024.2.e.a.257.1 2 160.99 odd 8
1024.2.e.a.257.1 2 160.109 even 8
1024.2.e.a.769.1 2 160.69 even 8
1024.2.e.a.769.1 2 160.139 odd 8
1024.2.e.f.257.1 2 160.19 odd 8
1024.2.e.f.257.1 2 160.29 even 8
1024.2.e.f.769.1 2 160.59 odd 8
1024.2.e.f.769.1 2 160.149 even 8
1152.2.d.c.577.1 2 240.29 odd 4
1152.2.d.c.577.1 2 240.59 even 4
1152.2.d.c.577.2 2 240.149 odd 4
1152.2.d.c.577.2 2 240.179 even 4
2304.2.a.t.1.1 2 60.59 even 2
2304.2.a.t.1.1 2 120.29 odd 2
2304.2.a.t.1.2 2 15.14 odd 2
2304.2.a.t.1.2 2 120.59 even 2
3200.2.d.c.1601.1 2 16.11 odd 4
3200.2.d.c.1601.1 2 16.13 even 4
3200.2.d.c.1601.2 2 16.3 odd 4
3200.2.d.c.1601.2 2 16.5 even 4
3200.2.f.o.449.1 4 80.3 even 4
3200.2.f.o.449.1 4 80.53 odd 4
3200.2.f.o.449.2 4 80.27 even 4
3200.2.f.o.449.2 4 80.77 odd 4
3200.2.f.o.449.3 4 80.37 odd 4
3200.2.f.o.449.3 4 80.67 even 4
3200.2.f.o.449.4 4 80.13 odd 4
3200.2.f.o.449.4 4 80.43 even 4
6400.2.a.by.1.1 2 1.1 even 1 trivial
6400.2.a.by.1.1 2 8.3 odd 2 CM
6400.2.a.by.1.2 2 4.3 odd 2 inner
6400.2.a.by.1.2 2 8.5 even 2 inner