Properties

Label 1280.2.j.b
Level $1280$
Weight $2$
Character orbit 1280.j
Analytic conductor $10.221$
Analytic rank $0$
Dimension $16$
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] = [1280,2,Mod(63,1280)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1280, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([2, 1, 3]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1280.63");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1280 = 2^{8} \cdot 5 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1280.j (of order \(4\), degree \(2\), 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: \(10.2208514587\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(8\) over \(\Q(i)\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 4x^{14} + 34x^{12} + 20x^{10} + 75x^{8} - 228x^{6} + 342x^{4} + 48x^{2} + 25 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{10} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{4}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \beta_{12} - \beta_{9}) q^{3} + (\beta_{6} - \beta_{5}) q^{5} - \beta_{2} q^{7} + (\beta_{7} + \beta_{4} + \beta_{3} - 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - \beta_{12} - \beta_{9}) q^{3} + (\beta_{6} - \beta_{5}) q^{5} - \beta_{2} q^{7} + (\beta_{7} + \beta_{4} + \beta_{3} - 1) q^{9} + ( - \beta_{12} + \beta_{11} + \cdots - \beta_1) q^{11}+ \cdots + (3 \beta_{12} - 3 \beta_{11} + \cdots - \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 16 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 16 q^{9} + 16 q^{13} - 8 q^{17} + 8 q^{21} - 16 q^{25} - 16 q^{29} - 56 q^{33} + 8 q^{45} + 8 q^{57} - 8 q^{61} + 72 q^{65} + 40 q^{69} - 56 q^{73} + 112 q^{81} - 72 q^{85} + 16 q^{89} + 128 q^{93} - 72 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 4x^{14} + 34x^{12} + 20x^{10} + 75x^{8} - 228x^{6} + 342x^{4} + 48x^{2} + 25 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( - 69 \nu^{15} + 531 \nu^{13} - 4197 \nu^{11} + 10529 \nu^{9} - 28993 \nu^{7} + 20103 \nu^{5} + \cdots + 247570 \nu ) / 85400 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 121 \nu^{15} - 1451 \nu^{13} + 8511 \nu^{11} - 31967 \nu^{9} + 5259 \nu^{7} - 71381 \nu^{5} + \cdots - 433340 \nu ) / 85400 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 106\nu^{14} - 463\nu^{12} + 3867\nu^{10} + 379\nu^{8} + 10151\nu^{6} - 21953\nu^{4} + 37775\nu^{2} - 34950 ) / 17080 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( - 551 \nu^{14} + 2161 \nu^{12} - 18236 \nu^{10} - 14768 \nu^{8} - 27424 \nu^{6} + 90746 \nu^{4} + \cdots - 109975 ) / 85400 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( - 832 \nu^{14} + 3618 \nu^{12} - 28886 \nu^{10} - 8413 \nu^{8} - 40424 \nu^{6} + 249549 \nu^{4} + \cdots + 32425 ) / 85400 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 15\nu^{14} - 64\nu^{12} + 521\nu^{10} + 183\nu^{8} + 869\nu^{6} - 3823\nu^{4} + 5148\nu^{2} + 225 ) / 1400 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -141\nu^{14} + 369\nu^{12} - 4028\nu^{10} - 9329\nu^{8} - 14942\nu^{6} + 19067\nu^{4} + 2825\nu^{2} - 43600 ) / 12200 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 1133 \nu^{14} - 4542 \nu^{12} + 38469 \nu^{10} + 21272 \nu^{8} + 87751 \nu^{6} - 303456 \nu^{4} + \cdots + 63300 ) / 85400 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 127 \nu^{15} - 492 \nu^{13} + 4232 \nu^{11} + 3126 \nu^{9} + 9268 \nu^{7} - 29652 \nu^{5} + \cdots + 15230 \nu ) / 6100 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( - 957 \nu^{15} + 4023 \nu^{13} - 33426 \nu^{11} - 12143 \nu^{9} - 70824 \nu^{7} + 225909 \nu^{5} + \cdots + 50920 \nu ) / 42700 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( 2029 \nu^{15} - 9358 \nu^{13} + 73420 \nu^{11} + 475 \nu^{9} + 110690 \nu^{7} - 571577 \nu^{5} + \cdots - 133715 \nu ) / 85400 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( 304 \nu^{15} - 1146 \nu^{13} + 10097 \nu^{11} + 8476 \nu^{9} + 25023 \nu^{7} - 57778 \nu^{5} + \cdots + 42460 \nu ) / 12200 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( 3112 \nu^{14} - 12457 \nu^{12} + 106657 \nu^{10} + 59966 \nu^{8} + 257163 \nu^{6} - 657752 \nu^{4} + \cdots + 63375 ) / 85400 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 3016 \nu^{15} - 11941 \nu^{13} + 101616 \nu^{11} + 65778 \nu^{9} + 215284 \nu^{7} - 705046 \nu^{5} + \cdots + 86085 \nu ) / 85400 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 4930 \nu^{15} - 19987 \nu^{13} + 168468 \nu^{11} + 90064 \nu^{9} + 356932 \nu^{7} + \cdots + 155045 \nu ) / 85400 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{15} - \beta_{14} + \beta_{10} ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( -3\beta_{6} - 2\beta_{5} - \beta_{4} + \beta_{3} + 2 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 3\beta_{15} - \beta_{12} + \beta_{11} - 8\beta_{9} - 5\beta_{2} - 2\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -2\beta_{13} + 9\beta_{8} + 2\beta_{7} - 9\beta_{6} + 3\beta_{5} - 12\beta_{4} + 4\beta_{3} - 5 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -19\beta_{15} + 4\beta_{14} - \beta_{12} + 9\beta_{11} - 48\beta_{10} - 13\beta_{9} - 30\beta_{2} - 5\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 7\beta_{13} + 44\beta_{8} + 17\beta_{7} + 23\beta_{6} + 66\beta_{5} - 10\beta_{4} - 50\beta_{3} - 121 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( - 217 \beta_{15} + 49 \beta_{14} + 48 \beta_{12} + 36 \beta_{11} - 171 \beta_{10} + 234 \beta_{9} + \cdots + 2 \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( 108\beta_{13} - 187\beta_{8} + 4\beta_{7} + 469\beta_{6} + 219\beta_{5} + 324\beta_{4} - 356\beta_{3} - 397 ) / 2 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( - 358 \beta_{15} + 103 \beta_{14} + 327 \beta_{12} - 183 \beta_{11} + 865 \beta_{10} + 1491 \beta_{9} + \cdots + 315 \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( 291 \beta_{13} - 2398 \beta_{8} - 579 \beta_{7} + 1332 \beta_{6} - 1250 \beta_{5} + 2031 \beta_{4} + \cdots + 2755 ) / 2 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 6336 \beta_{15} - 1573 \beta_{14} - 245 \beta_{12} - 2263 \beta_{11} + 10387 \beta_{10} + \cdots + 1278 \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( - 1252 \beta_{13} - 2390 \beta_{8} - 1520 \beta_{7} - 5577 \beta_{6} - 7208 \beta_{5} - 1033 \beta_{4} + \cdots + 13627 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( 43625 \beta_{15} - 10735 \beta_{14} - 13158 \beta_{12} - 4058 \beta_{11} + 18863 \beta_{10} + \cdots - 5720 \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( - 23024 \beta_{13} + 64922 \beta_{8} + 6616 \beta_{7} - 101987 \beta_{6} - 23136 \beta_{5} + \cdots + 30456 ) / 2 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( - 22885 \beta_{15} + 5772 \beta_{14} - 54313 \beta_{12} + 63385 \beta_{11} - 293188 \beta_{10} + \cdots - 73248 \beta_1 ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1280\mathbb{Z}\right)^\times\).

\(n\) \(257\) \(261\) \(511\)
\(\chi(n)\) \(\beta_{6}\) \(-\beta_{6}\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
63.1
−0.293774 + 0.413333i
1.12044 + 0.413333i
−2.05957 1.35246i
0.645356 + 1.35246i
−0.645356 1.35246i
2.05957 + 1.35246i
−1.12044 0.413333i
0.293774 0.413333i
0.293774 + 0.413333i
−1.12044 + 0.413333i
2.05957 1.35246i
−0.645356 + 1.35246i
0.645356 1.35246i
−2.05957 + 1.35246i
1.12044 0.413333i
−0.293774 0.413333i
0 3.31797i 0 −0.584541 2.15831i 0 −1.93949 + 1.93949i 0 −8.00895 0
63.2 0 1.90376i 0 0.584541 2.15831i 0 1.11282 1.11282i 0 −0.624302 0
63.3 0 1.13533i 0 1.91267 + 1.15831i 0 2.17151 2.17151i 0 1.71103 0
63.4 0 0.278883i 0 −1.91267 + 1.15831i 0 −0.533412 + 0.533412i 0 2.92222 0
63.5 0 0.278883i 0 −1.91267 + 1.15831i 0 0.533412 0.533412i 0 2.92222 0
63.6 0 1.13533i 0 1.91267 + 1.15831i 0 −2.17151 + 2.17151i 0 1.71103 0
63.7 0 1.90376i 0 0.584541 2.15831i 0 −1.11282 + 1.11282i 0 −0.624302 0
63.8 0 3.31797i 0 −0.584541 2.15831i 0 1.93949 1.93949i 0 −8.00895 0
447.1 0 3.31797i 0 −0.584541 + 2.15831i 0 1.93949 + 1.93949i 0 −8.00895 0
447.2 0 1.90376i 0 0.584541 + 2.15831i 0 −1.11282 1.11282i 0 −0.624302 0
447.3 0 1.13533i 0 1.91267 1.15831i 0 −2.17151 2.17151i 0 1.71103 0
447.4 0 0.278883i 0 −1.91267 1.15831i 0 0.533412 + 0.533412i 0 2.92222 0
447.5 0 0.278883i 0 −1.91267 1.15831i 0 −0.533412 0.533412i 0 2.92222 0
447.6 0 1.13533i 0 1.91267 1.15831i 0 2.17151 + 2.17151i 0 1.71103 0
447.7 0 1.90376i 0 0.584541 + 2.15831i 0 1.11282 + 1.11282i 0 −0.624302 0
447.8 0 3.31797i 0 −0.584541 + 2.15831i 0 −1.93949 1.93949i 0 −8.00895 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 63.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
80.j even 4 1 inner
80.t odd 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1280.2.j.b yes 16
4.b odd 2 1 inner 1280.2.j.b yes 16
5.c odd 4 1 1280.2.s.a yes 16
8.b even 2 1 1280.2.j.a 16
8.d odd 2 1 1280.2.j.a 16
16.e even 4 1 1280.2.s.a yes 16
16.e even 4 1 1280.2.s.b yes 16
16.f odd 4 1 1280.2.s.a yes 16
16.f odd 4 1 1280.2.s.b yes 16
20.e even 4 1 1280.2.s.a yes 16
40.i odd 4 1 1280.2.s.b yes 16
40.k even 4 1 1280.2.s.b yes 16
80.i odd 4 1 1280.2.j.a 16
80.j even 4 1 inner 1280.2.j.b yes 16
80.s even 4 1 1280.2.j.a 16
80.t odd 4 1 inner 1280.2.j.b yes 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1280.2.j.a 16 8.b even 2 1
1280.2.j.a 16 8.d odd 2 1
1280.2.j.a 16 80.i odd 4 1
1280.2.j.a 16 80.s even 4 1
1280.2.j.b yes 16 1.a even 1 1 trivial
1280.2.j.b yes 16 4.b odd 2 1 inner
1280.2.j.b yes 16 80.j even 4 1 inner
1280.2.j.b yes 16 80.t odd 4 1 inner
1280.2.s.a yes 16 5.c odd 4 1
1280.2.s.a yes 16 16.e even 4 1
1280.2.s.a yes 16 16.f odd 4 1
1280.2.s.a yes 16 20.e even 4 1
1280.2.s.b yes 16 16.e even 4 1
1280.2.s.b yes 16 16.f odd 4 1
1280.2.s.b yes 16 40.i odd 4 1
1280.2.s.b yes 16 40.k even 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1280, [\chi])\):

\( T_{3}^{8} + 16T_{3}^{6} + 60T_{3}^{4} + 56T_{3}^{2} + 4 \) Copy content Toggle raw display
\( T_{13}^{4} - 4T_{13}^{3} - 28T_{13}^{2} + 64T_{13} + 212 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{8} + 16 T^{6} + 60 T^{4} + \cdots + 4)^{2} \) Copy content Toggle raw display
$5$ \( (T^{8} + 4 T^{6} + \cdots + 625)^{2} \) Copy content Toggle raw display
$7$ \( T^{16} + 152 T^{12} + \cdots + 10000 \) Copy content Toggle raw display
$11$ \( T^{16} + \cdots + 100000000 \) Copy content Toggle raw display
$13$ \( (T^{4} - 4 T^{3} + \cdots + 212)^{4} \) Copy content Toggle raw display
$17$ \( (T^{8} + 4 T^{7} + 8 T^{6} + \cdots + 16)^{2} \) Copy content Toggle raw display
$19$ \( T^{16} + 1264 T^{12} + \cdots + 614656 \) Copy content Toggle raw display
$23$ \( T^{16} + 5624 T^{12} + \cdots + 54700816 \) Copy content Toggle raw display
$29$ \( (T^{8} + 8 T^{7} + \cdots + 364816)^{2} \) Copy content Toggle raw display
$31$ \( (T^{8} + 104 T^{6} + \cdots + 40000)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} - 64 T^{2} + 980)^{4} \) Copy content Toggle raw display
$41$ \( (T^{8} + 232 T^{6} + \cdots + 150544)^{2} \) Copy content Toggle raw display
$43$ \( (T^{8} - 240 T^{6} + \cdots + 1716100)^{2} \) Copy content Toggle raw display
$47$ \( T^{16} + \cdots + 71997768976 \) Copy content Toggle raw display
$53$ \( (T^{8} + 56 T^{6} + \cdots + 10000)^{2} \) Copy content Toggle raw display
$59$ \( T^{16} + \cdots + 56364057760000 \) Copy content Toggle raw display
$61$ \( (T^{8} + 4 T^{7} + \cdots + 25806400)^{2} \) Copy content Toggle raw display
$67$ \( (T^{8} - 176 T^{6} + \cdots + 4900)^{2} \) Copy content Toggle raw display
$71$ \( (T^{8} - 264 T^{6} + \cdots + 4293184)^{2} \) Copy content Toggle raw display
$73$ \( (T^{8} + 28 T^{7} + \cdots + 7728400)^{2} \) Copy content Toggle raw display
$79$ \( (T^{8} - 320 T^{6} + \cdots + 313600)^{2} \) Copy content Toggle raw display
$83$ \( (T^{8} + 568 T^{6} + \cdots + 68724100)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} - 4 T^{3} + \cdots - 800)^{4} \) Copy content Toggle raw display
$97$ \( (T^{8} + 36 T^{7} + \cdots + 68890000)^{2} \) Copy content Toggle raw display
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