Properties

Label 1280.3.b.i
Level $1280$
Weight $3$
Character orbit 1280.b
Analytic conductor $34.877$
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] = [1280,3,Mod(511,1280)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1280, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 0, 0]))
 
N = Newforms(chi, 3, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1280.511");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1280 = 2^{8} \cdot 5 \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 1280.b (of order \(2\), degree \(1\), not 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: \(34.8774738381\)
Analytic rank: \(0\)
Dimension: \(16\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 2 x^{15} + 2 x^{14} - x^{12} + 4 x^{11} - 6 x^{10} + 14 x^{9} - 15 x^{8} + 28 x^{7} + \cdots + 256 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{48} \)
Twist minimal: no (minimal twist has level 40)
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 \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{4} q^{3} - \beta_1 q^{5} + \beta_{12} q^{7} + (\beta_{2} - 3) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{4} q^{3} - \beta_1 q^{5} + \beta_{12} q^{7} + (\beta_{2} - 3) q^{9} + \beta_{6} q^{11} - \beta_{3} q^{13} + \beta_{11} q^{15} + \beta_{9} q^{17} + (\beta_{14} - \beta_{6} - 2 \beta_{4}) q^{19} + (\beta_{7} - \beta_{3} + 2 \beta_1) q^{21} + ( - \beta_{15} - \beta_{12} + \cdots - \beta_{10}) q^{23}+ \cdots + ( - 5 \beta_{14} + 4 \beta_{13} + \cdots - 4 \beta_{4}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 48 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 48 q^{9} + 80 q^{25} + 32 q^{33} - 96 q^{41} - 176 q^{49} + 352 q^{57} - 320 q^{73} - 112 q^{81} + 96 q^{89} + 448 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 2 x^{15} + 2 x^{14} - x^{12} + 4 x^{11} - 6 x^{10} + 14 x^{9} - 15 x^{8} + 28 x^{7} + \cdots + 256 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 5 \nu^{15} + 16 \nu^{14} + 16 \nu^{13} + 32 \nu^{12} + 55 \nu^{11} + 74 \nu^{10} + 96 \nu^{9} + \cdots + 1728 ) / 192 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( - 3 \nu^{15} - 3 \nu^{14} - 6 \nu^{13} - 6 \nu^{12} - 9 \nu^{11} - 19 \nu^{10} - 16 \nu^{9} + \cdots - 192 ) / 64 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( - 5 \nu^{15} - 17 \nu^{14} - 14 \nu^{13} - 42 \nu^{12} - 55 \nu^{11} - 73 \nu^{10} - 100 \nu^{9} + \cdots - 1856 ) / 64 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 9 \nu^{15} - 21 \nu^{14} + 42 \nu^{13} - 50 \nu^{12} + 67 \nu^{11} - 73 \nu^{10} + 60 \nu^{9} + \cdots + 320 ) / 128 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( - 11 \nu^{15} - 31 \nu^{14} - 38 \nu^{13} - 78 \nu^{12} - 113 \nu^{11} - 135 \nu^{10} - 232 \nu^{9} + \cdots - 3520 ) / 64 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( \nu^{15} - 13 \nu^{14} + 28 \nu^{13} - 46 \nu^{12} + 55 \nu^{11} - 65 \nu^{10} + 74 \nu^{9} + \cdots + 1280 ) / 32 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( - 55 \nu^{15} - 161 \nu^{14} - 122 \nu^{13} - 322 \nu^{12} - 485 \nu^{11} - 637 \nu^{10} + \cdots - 16704 ) / 192 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( - 3 \nu^{15} + 22 \nu^{14} + 6 \nu^{13} + 16 \nu^{12} + 43 \nu^{11} + 20 \nu^{10} + 102 \nu^{9} + \cdots + 2432 ) / 32 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( - 15 \nu^{15} - 61 \nu^{14} - 54 \nu^{13} - 114 \nu^{12} - 165 \nu^{11} - 241 \nu^{10} - 372 \nu^{9} + \cdots - 6464 ) / 64 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 8 \nu^{15} - 25 \nu^{14} + 60 \nu^{13} - 86 \nu^{12} + 116 \nu^{11} - 119 \nu^{10} + 130 \nu^{9} + \cdots + 2240 ) / 48 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( - 161 \nu^{15} + 229 \nu^{14} - 330 \nu^{13} + 290 \nu^{12} - 395 \nu^{11} + 233 \nu^{10} + \cdots + 15040 ) / 384 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( 71 \nu^{15} - 67 \nu^{14} + 70 \nu^{13} + 18 \nu^{12} - 19 \nu^{11} + 97 \nu^{10} - 284 \nu^{9} + \cdots - 11840 ) / 128 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( 53 \nu^{15} - 23 \nu^{14} - 2 \nu^{13} + 90 \nu^{12} - 121 \nu^{11} + 209 \nu^{10} - 348 \nu^{9} + \cdots - 11456 ) / 64 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 12 \nu^{15} - 13 \nu^{14} + 16 \nu^{13} - 6 \nu^{12} + 8 \nu^{11} + 5 \nu^{10} - 26 \nu^{9} + \cdots - 1600 ) / 16 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 427 \nu^{15} - 35 \nu^{14} - 450 \nu^{13} + 1538 \nu^{12} - 2039 \nu^{11} + 3017 \nu^{10} + \cdots - 121664 ) / 384 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( 2 \beta_{15} - 2 \beta_{14} - 2 \beta_{13} - 2 \beta_{11} + \beta_{8} - \beta_{7} + 2 \beta_{6} + \cdots + 8 ) / 64 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 3\beta_{14} - 2\beta_{13} + \beta_{8} + \beta_{7} - 2\beta_{6} - 4\beta_{4} + \beta_{3} + 8\beta_1 ) / 32 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( \beta_{14} - 4 \beta_{12} - 4 \beta_{11} + \beta_{10} - 2 \beta_{9} + 2 \beta_{7} - 4 \beta_{6} + \cdots - 8 ) / 32 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 2\beta_{15} - 4\beta_{12} + 2\beta_{11} + 5\beta_{10} + 2\beta_{9} - 3\beta_{5} + \beta_{2} - 8 ) / 32 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 2 \beta_{15} + 12 \beta_{14} - 2 \beta_{13} - 8 \beta_{12} + 22 \beta_{11} + 6 \beta_{10} + 4 \beta_{9} + \cdots - 72 ) / 64 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -\beta_{14} - \beta_{8} - \beta_{7} - 2\beta_{6} + 8\beta_{4} + 3\beta_{3} + 4\beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 2 \beta_{15} - 28 \beta_{14} - 10 \beta_{13} + 40 \beta_{12} - 10 \beta_{11} + 14 \beta_{10} + \cdots - 216 ) / 64 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( -2\beta_{15} - 4\beta_{12} - 10\beta_{11} - 9\beta_{10} + 6\beta_{9} - 5\beta_{5} - 49\beta_{2} - 8 ) / 32 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( - 4 \beta_{15} + 29 \beta_{14} + 4 \beta_{13} - 28 \beta_{12} + 8 \beta_{11} - 19 \beta_{10} + \cdots - 296 ) / 32 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( -3\beta_{14} + 10\beta_{13} - 9\beta_{8} + 7\beta_{7} + 50\beta_{6} - 140\beta_{4} + 23\beta_{3} + 200\beta_1 ) / 32 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( - 42 \beta_{15} - 94 \beta_{14} + 66 \beta_{13} + 32 \beta_{12} - 134 \beta_{11} - 64 \beta_{10} + \cdots - 696 ) / 64 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( -4\beta_{15} + 15\beta_{12} + 7\beta_{11} - 6\beta_{10} + 2\beta_{9} - 5\beta_{5} + 7\beta_{2} + 74 ) / 4 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( 54 \beta_{15} - 254 \beta_{14} + 10 \beta_{13} + 288 \beta_{12} + 138 \beta_{11} - 24 \beta_{10} + \cdots + 1048 ) / 64 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( - 69 \beta_{14} + 70 \beta_{13} + 101 \beta_{8} + 13 \beta_{7} + 22 \beta_{6} + 172 \beta_{4} + \cdots + 104 \beta_1 ) / 32 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( - 96 \beta_{15} + 317 \beta_{14} + 48 \beta_{13} - 116 \beta_{12} + 44 \beta_{11} + 37 \beta_{10} + \cdots + 1752 ) / 32 \) Copy content Toggle raw display

Character values

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

\(n\) \(257\) \(261\) \(511\)
\(\chi(n)\) \(1\) \(1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
511.1
−1.06626 0.929025i
0.929025 + 1.06626i
−1.41421 0.00487727i
−0.00487727 1.41421i
1.28251 0.595955i
−0.595955 + 1.28251i
0.579920 1.28984i
1.28984 0.579920i
0.579920 + 1.28984i
1.28984 + 0.579920i
1.28251 + 0.595955i
−0.595955 1.28251i
−1.41421 + 0.00487727i
−0.00487727 + 1.41421i
−1.06626 + 0.929025i
0.929025 1.06626i
0 5.01222i 0 −2.23607 0 8.92613i 0 −16.1223 0
511.2 0 5.01222i 0 2.23607 0 8.92613i 0 −16.1223 0
511.3 0 4.13348i 0 −2.23607 0 2.28473i 0 −8.08569 0
511.4 0 4.13348i 0 2.23607 0 2.28473i 0 −8.08569 0
511.5 0 2.08343i 0 −2.23607 0 1.18656i 0 4.65931 0
511.6 0 2.08343i 0 2.23607 0 1.18656i 0 4.65931 0
511.7 0 1.20470i 0 −2.23607 0 12.3974i 0 7.54870 0
511.8 0 1.20470i 0 2.23607 0 12.3974i 0 7.54870 0
511.9 0 1.20470i 0 −2.23607 0 12.3974i 0 7.54870 0
511.10 0 1.20470i 0 2.23607 0 12.3974i 0 7.54870 0
511.11 0 2.08343i 0 −2.23607 0 1.18656i 0 4.65931 0
511.12 0 2.08343i 0 2.23607 0 1.18656i 0 4.65931 0
511.13 0 4.13348i 0 −2.23607 0 2.28473i 0 −8.08569 0
511.14 0 4.13348i 0 2.23607 0 2.28473i 0 −8.08569 0
511.15 0 5.01222i 0 −2.23607 0 8.92613i 0 −16.1223 0
511.16 0 5.01222i 0 2.23607 0 8.92613i 0 −16.1223 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 511.16
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
8.b even 2 1 inner
8.d odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1280.3.b.i 16
4.b odd 2 1 inner 1280.3.b.i 16
8.b even 2 1 inner 1280.3.b.i 16
8.d odd 2 1 inner 1280.3.b.i 16
16.e even 4 1 40.3.g.a 8
16.e even 4 1 160.3.g.a 8
16.f odd 4 1 40.3.g.a 8
16.f odd 4 1 160.3.g.a 8
48.i odd 4 1 360.3.g.a 8
48.i odd 4 1 1440.3.g.a 8
48.k even 4 1 360.3.g.a 8
48.k even 4 1 1440.3.g.a 8
80.i odd 4 1 200.3.e.d 16
80.i odd 4 1 800.3.e.d 16
80.j even 4 1 200.3.e.d 16
80.j even 4 1 800.3.e.d 16
80.k odd 4 1 200.3.g.g 8
80.k odd 4 1 800.3.g.g 8
80.q even 4 1 200.3.g.g 8
80.q even 4 1 800.3.g.g 8
80.s even 4 1 200.3.e.d 16
80.s even 4 1 800.3.e.d 16
80.t odd 4 1 200.3.e.d 16
80.t odd 4 1 800.3.e.d 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
40.3.g.a 8 16.e even 4 1
40.3.g.a 8 16.f odd 4 1
160.3.g.a 8 16.e even 4 1
160.3.g.a 8 16.f odd 4 1
200.3.e.d 16 80.i odd 4 1
200.3.e.d 16 80.j even 4 1
200.3.e.d 16 80.s even 4 1
200.3.e.d 16 80.t odd 4 1
200.3.g.g 8 80.k odd 4 1
200.3.g.g 8 80.q even 4 1
360.3.g.a 8 48.i odd 4 1
360.3.g.a 8 48.k even 4 1
800.3.e.d 16 80.i odd 4 1
800.3.e.d 16 80.j even 4 1
800.3.e.d 16 80.s even 4 1
800.3.e.d 16 80.t odd 4 1
800.3.g.g 8 80.k odd 4 1
800.3.g.g 8 80.q even 4 1
1280.3.b.i 16 1.a even 1 1 trivial
1280.3.b.i 16 4.b odd 2 1 inner
1280.3.b.i 16 8.b even 2 1 inner
1280.3.b.i 16 8.d odd 2 1 inner
1440.3.g.a 8 48.i odd 4 1
1440.3.g.a 8 48.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 \(S_{3}^{\mathrm{new}}(1280, [\chi])\):

\( T_{3}^{8} + 48T_{3}^{6} + 680T_{3}^{4} + 2752T_{3}^{2} + 2704 \) Copy content Toggle raw display
\( T_{13}^{8} - 880T_{13}^{6} + 170080T_{13}^{4} - 10622720T_{13}^{2} + 138297600 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{8} + 48 T^{6} + \cdots + 2704)^{2} \) Copy content Toggle raw display
$5$ \( (T^{2} - 5)^{8} \) Copy content Toggle raw display
$7$ \( (T^{8} + 240 T^{6} + \cdots + 90000)^{2} \) Copy content Toggle raw display
$11$ \( (T^{8} + 432 T^{6} + \cdots + 60715264)^{2} \) Copy content Toggle raw display
$13$ \( (T^{8} - 880 T^{6} + \cdots + 138297600)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} - 664 T^{2} + \cdots + 72592)^{4} \) Copy content Toggle raw display
$19$ \( (T^{8} + 592 T^{6} + \cdots + 7139584)^{2} \) Copy content Toggle raw display
$23$ \( (T^{8} + 2320 T^{6} + \cdots + 47610000)^{2} \) Copy content Toggle raw display
$29$ \( (T^{8} - 4480 T^{6} + \cdots + 184968806400)^{2} \) Copy content Toggle raw display
$31$ \( (T^{8} + 2240 T^{6} + \cdots + 23040000)^{2} \) Copy content Toggle raw display
$37$ \( (T^{8} - 6480 T^{6} + \cdots + 134307590400)^{2} \) Copy content Toggle raw display
$41$ \( (T^{4} + 24 T^{3} + \cdots - 1472)^{4} \) Copy content Toggle raw display
$43$ \( (T^{8} + \cdots + 31337648784016)^{2} \) Copy content Toggle raw display
$47$ \( (T^{8} + \cdots + 1101366291600)^{2} \) Copy content Toggle raw display
$53$ \( (T^{8} + \cdots + 3957553209600)^{2} \) Copy content Toggle raw display
$59$ \( (T^{8} + \cdots + 18557347614976)^{2} \) Copy content Toggle raw display
$61$ \( (T^{8} + \cdots + 39126526214400)^{2} \) Copy content Toggle raw display
$67$ \( (T^{8} + 2928 T^{6} + \cdots + 485232784)^{2} \) Copy content Toggle raw display
$71$ \( (T^{8} + \cdots + 2536502169600)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} + 80 T^{3} + \cdots - 12225008)^{4} \) Copy content Toggle raw display
$79$ \( (T^{8} + \cdots + 976317515366400)^{2} \) Copy content Toggle raw display
$83$ \( (T^{8} + 22288 T^{6} + \cdots + 520862437264)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} - 24 T^{3} + \cdots - 3224432)^{4} \) Copy content Toggle raw display
$97$ \( (T^{4} - 112 T^{3} + \cdots + 83984)^{4} \) Copy content Toggle raw display
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