Properties

Label 1280.3.h.l
Level $1280$
Weight $3$
Character orbit 1280.h
Analytic conductor $34.877$
Analytic rank $0$
Dimension $8$
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(1279,1280)]
 
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, 1]))
 
N = Newforms(chi, 3, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1280.1279");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1280 = 2^{8} \cdot 5 \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 1280.h (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: \(8\)
Coefficient field: 8.0.493995311104.27
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 10x^{6} + 41x^{4} + 46x^{2} + 64 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{11} \)
Twist minimal: no (minimal twist has level 640)
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.

\(f(q)\) \(=\) \( q - \beta_{4} q^{3} + (\beta_1 + 1) q^{5} + (\beta_{5} - \beta_{4}) q^{7} - \beta_{2} q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{4} q^{3} + (\beta_1 + 1) q^{5} + (\beta_{5} - \beta_{4}) q^{7} - \beta_{2} q^{9} - \beta_{7} q^{11} - \beta_{6} q^{13} + ( - \beta_{7} - 2 \beta_{5} + \cdots + \beta_{3}) q^{15}+ \cdots + (3 \beta_{7} + 2 \beta_{3}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 12 q^{5}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 12 q^{5} + 88 q^{21} - 96 q^{25} + 80 q^{29} - 24 q^{41} - 68 q^{45} - 224 q^{49} + 8 q^{61} + 56 q^{65} - 344 q^{69} - 512 q^{81} - 352 q^{85} - 288 q^{89}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 10x^{6} + 41x^{4} + 46x^{2} + 64 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{6} + 29\nu^{4} + 142\nu^{2} + 224 ) / 45 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -4\nu^{6} - 26\nu^{4} - 28\nu^{2} + 139 ) / 45 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{7} - 16\nu^{5} - 173\nu^{3} - 406\nu ) / 45 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 17\nu^{7} + 178\nu^{5} + 569\nu^{3} + 118\nu ) / 360 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 11\nu^{7} + 94\nu^{5} + 347\nu^{3} + 34\nu ) / 180 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -22\nu^{6} - 188\nu^{4} - 784\nu^{2} - 608 ) / 45 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -\nu^{7} - 14\nu^{5} - 77\nu^{3} - 174\nu ) / 10 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( -\beta_{7} - 2\beta_{5} + \beta_{3} ) / 8 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( -\beta_{6} + 5\beta_{2} - 2\beta _1 - 19 ) / 8 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( \beta_{7} + 7\beta_{5} - 6\beta_{4} - 2\beta_{3} ) / 4 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 3\beta_{6} - 13\beta_{2} + 14\beta _1 + 11 ) / 4 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -39\beta_{5} + 50\beta_{4} + \beta_{3} ) / 4 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -8\beta_{6} + 11\beta_{2} - 42\beta _1 + 67 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( -30\beta_{7} + 181\beta_{5} - 238\beta_{4} + 53\beta_{3} ) / 4 \) 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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1279.1
0.707107 + 2.24979i
0.707107 2.24979i
−0.707107 + 0.968735i
−0.707107 0.968735i
0.707107 0.968735i
0.707107 + 0.968735i
−0.707107 2.24979i
−0.707107 + 2.24979i
0 −3.62258 0 −0.561553 4.96837i 0 −6.45101 0 4.12311 0
1279.2 0 −3.62258 0 −0.561553 + 4.96837i 0 −6.45101 0 4.12311 0
1279.3 0 −2.20837 0 3.56155 3.50932i 0 0.620058 0 −4.12311 0
1279.4 0 −2.20837 0 3.56155 + 3.50932i 0 0.620058 0 −4.12311 0
1279.5 0 2.20837 0 3.56155 3.50932i 0 −0.620058 0 −4.12311 0
1279.6 0 2.20837 0 3.56155 + 3.50932i 0 −0.620058 0 −4.12311 0
1279.7 0 3.62258 0 −0.561553 4.96837i 0 6.45101 0 4.12311 0
1279.8 0 3.62258 0 −0.561553 + 4.96837i 0 6.45101 0 4.12311 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1279.8
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

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1280.3.h.l 8
4.b odd 2 1 inner 1280.3.h.l 8
5.b even 2 1 inner 1280.3.h.l 8
8.b even 2 1 1280.3.h.h 8
8.d odd 2 1 1280.3.h.h 8
16.e even 4 2 640.3.e.i 16
16.f odd 4 2 640.3.e.i 16
20.d odd 2 1 inner 1280.3.h.l 8
40.e odd 2 1 1280.3.h.h 8
40.f even 2 1 1280.3.h.h 8
80.k odd 4 2 640.3.e.i 16
80.q even 4 2 640.3.e.i 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
640.3.e.i 16 16.e even 4 2
640.3.e.i 16 16.f odd 4 2
640.3.e.i 16 80.k odd 4 2
640.3.e.i 16 80.q even 4 2
1280.3.h.h 8 8.b even 2 1
1280.3.h.h 8 8.d odd 2 1
1280.3.h.h 8 40.e odd 2 1
1280.3.h.h 8 40.f even 2 1
1280.3.h.l 8 1.a even 1 1 trivial
1280.3.h.l 8 4.b odd 2 1 inner
1280.3.h.l 8 5.b even 2 1 inner
1280.3.h.l 8 20.d odd 2 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{3}^{\mathrm{new}}(1280, [\chi])\):

\( T_{3}^{4} - 18T_{3}^{2} + 64 \) Copy content Toggle raw display
\( T_{7}^{4} - 42T_{7}^{2} + 16 \) Copy content Toggle raw display
\( T_{29}^{2} - 20T_{29} - 512 \) Copy content Toggle raw display
\( T_{61}^{2} - 2T_{61} - 6136 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( (T^{4} - 18 T^{2} + 64)^{2} \) Copy content Toggle raw display
$5$ \( (T^{4} - 6 T^{3} + \cdots + 625)^{2} \) Copy content Toggle raw display
$7$ \( (T^{4} - 42 T^{2} + 16)^{2} \) Copy content Toggle raw display
$11$ \( (T^{4} + 328 T^{2} + 4864)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + 564 T^{2} + 77824)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 768 T^{2} + 77824)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} + 1032 T^{2} + 4864)^{2} \) Copy content Toggle raw display
$23$ \( (T^{4} - 426 T^{2} + 44944)^{2} \) Copy content Toggle raw display
$29$ \( (T^{2} - 20 T - 512)^{4} \) Copy content Toggle raw display
$31$ \( (T^{4} + 3456 T^{2} + 1245184)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} + 148 T^{2} + 4864)^{2} \) Copy content Toggle raw display
$41$ \( (T^{2} + 6 T - 2048)^{4} \) Copy content Toggle raw display
$43$ \( (T^{4} - 6258 T^{2} + 9684544)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} - 3402 T^{2} + 1373584)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} + 1268 T^{2} + 19456)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} + 5576 T^{2} + 1405696)^{2} \) Copy content Toggle raw display
$61$ \( (T^{2} - 2 T - 6136)^{4} \) Copy content Toggle raw display
$67$ \( (T^{4} - 914 T^{2} + 141376)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + 13824 T^{2} + 25214976)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} + 17856 T^{2} + 79691776)^{2} \) Copy content Toggle raw display
$79$ \( (T^{4} + 9088 T^{2} + 4980736)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} - 12242 T^{2} + 8248384)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} + 72 T + 1228)^{4} \) Copy content Toggle raw display
$97$ \( (T^{4} + 33024 T^{2} + 270905344)^{2} \) Copy content Toggle raw display
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