Properties

Label 1280.2.q.a
Level $1280$
Weight $2$
Character orbit 1280.q
Analytic conductor $10.221$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $8$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1280,2,Mod(449,1280)]
 
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([0, 1, 2]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1280.449");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1280 = 2^{8} \cdot 5 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1280.q (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: 16.0.9349208943630483456.9
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 8 x^{15} + 48 x^{14} - 196 x^{13} + 642 x^{12} - 1668 x^{11} + 3580 x^{10} - 6328 x^{9} + \cdots + 25 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{12} \)
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.

\(f(q)\) \(=\) \( q - \beta_{5} q^{3} + ( - \beta_{15} + \beta_{9} - \beta_{4}) q^{5} + ( - \beta_{6} - \beta_{5} + \beta_1) q^{7} + \beta_{3} q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{5} q^{3} + ( - \beta_{15} + \beta_{9} - \beta_{4}) q^{5} + ( - \beta_{6} - \beta_{5} + \beta_1) q^{7} + \beta_{3} q^{9} + (2 \beta_{14} + 3 \beta_{8} - 2 \beta_{2}) q^{11} - \beta_{10} q^{13} + ( - \beta_{12} - \beta_{8} + \cdots + \beta_{5}) q^{15}+ \cdots + (5 \beta_{14} - \beta_{7} + 4 \beta_{2}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 8 q^{5}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 8 q^{5} + 48 q^{21} + 16 q^{29} + 24 q^{45} + 32 q^{49} - 32 q^{61} + 96 q^{81} - 48 q^{85}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 8 x^{15} + 48 x^{14} - 196 x^{13} + 642 x^{12} - 1668 x^{11} + 3580 x^{10} - 6328 x^{9} + \cdots + 25 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 50 \nu^{14} - 350 \nu^{13} + 2019 \nu^{12} - 7564 \nu^{11} + 23298 \nu^{10} - 55495 \nu^{9} + \cdots + 2945 ) / 65 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 56 \nu^{14} - 392 \nu^{13} + 2267 \nu^{12} - 8506 \nu^{11} + 26269 \nu^{10} - 62716 \nu^{9} + \cdots + 2430 ) / 65 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 6912 \nu^{15} - 51840 \nu^{14} + 303752 \nu^{13} - 1188148 \nu^{12} + 3758744 \nu^{11} + \cdots - 268015 ) / 17095 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( - 10 \nu^{14} + 70 \nu^{13} - 406 \nu^{12} + 1526 \nu^{11} - 4732 \nu^{10} + 11340 \nu^{9} - 22581 \nu^{8} + \cdots - 670 ) / 5 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 18512 \nu^{15} - 119115 \nu^{14} + 677662 \nu^{13} - 2393217 \nu^{12} + 7123788 \nu^{11} + \cdots + 928550 ) / 17095 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( - 18512 \nu^{15} + 158565 \nu^{14} - 953812 \nu^{13} + 3999884 \nu^{12} - 13173840 \nu^{11} + \cdots + 2010475 ) / 17095 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( - 31954 \nu^{15} + 196786 \nu^{14} - 1112172 \nu^{13} + 3804882 \nu^{12} - 11134674 \nu^{11} + \cdots - 1221660 ) / 17095 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 31954 \nu^{15} - 267796 \nu^{14} + 1609242 \nu^{13} - 6688677 \nu^{12} + 21975534 \nu^{11} + \cdots - 3128360 ) / 17095 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 10652 \nu^{15} - 79890 \nu^{14} + 470562 \nu^{13} - 1846988 \nu^{12} + 5882478 \nu^{11} + \cdots - 370592 ) / 3419 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( - 65398 \nu^{15} + 432362 \nu^{14} - 2472404 \nu^{13} + 8920509 \nu^{12} - 26909398 \nu^{11} + \cdots - 1617955 ) / 17095 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( 65398 \nu^{15} - 548608 \nu^{14} + 3286126 \nu^{13} - 13631891 \nu^{12} + 44599304 \nu^{11} + \cdots - 4912335 ) / 17095 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( - 7132 \nu^{15} + 53490 \nu^{14} - 314802 \nu^{13} + 1234948 \nu^{12} - 3929184 \nu^{11} + \cdots + 243510 ) / 1315 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( - 103988 \nu^{15} + 793586 \nu^{14} - 4684051 \nu^{13} + 18554445 \nu^{12} - 59336829 \nu^{11} + \cdots + 4607650 ) / 17095 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( - 8336 \nu^{15} + 62520 \nu^{14} - 367290 \nu^{13} + 1439165 \nu^{12} - 4568352 \nu^{11} + \cdots + 251110 ) / 1315 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 110900 \nu^{15} - 818074 \nu^{14} + 4796339 \nu^{13} - 18624580 \nu^{12} + 58876527 \nu^{11} + \cdots - 2379795 ) / 17095 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{15} + \beta_{14} - \beta_{13} - 2\beta_{9} + 1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 2\beta_{15} + \beta_{14} - 2\beta_{9} + 2\beta_{4} - \beta_{3} + \beta_{2} + 2\beta _1 - 5 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( - 4 \beta_{15} - 7 \beta_{14} + 10 \beta_{13} + 6 \beta_{12} + \beta_{11} - \beta_{10} + 18 \beta_{9} + \cdots - 16 ) / 4 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( - 14 \beta_{15} - 8 \beta_{14} + 2 \beta_{13} + 6 \beta_{12} + 2 \beta_{11} + 20 \beta_{9} - 6 \beta_{7} + \cdots + 21 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( - 6 \beta_{15} + 23 \beta_{14} - 64 \beta_{13} - 40 \beta_{12} - 3 \beta_{11} + 13 \beta_{10} + \cdots + 132 ) / 4 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 93 \beta_{15} + 55 \beta_{14} - 35 \beta_{13} - 75 \beta_{12} - 24 \beta_{11} + 5 \beta_{10} - 180 \beta_{9} + \cdots - 84 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 238 \beta_{15} - 44 \beta_{14} + 420 \beta_{13} + 154 \beta_{12} - 45 \beta_{11} - 123 \beta_{10} + \cdots - 1069 ) / 4 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( - 560 \beta_{15} - 364 \beta_{14} + 440 \beta_{13} + 672 \beta_{12} + 184 \beta_{11} - 112 \beta_{10} + \cdots + 125 ) / 2 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( - 2904 \beta_{15} - 325 \beta_{14} - 2430 \beta_{13} + 192 \beta_{12} + 843 \beta_{11} + 855 \beta_{10} + \cdots + 8126 ) / 4 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( 2779 \beta_{15} + 2344 \beta_{14} - 4515 \beta_{13} - 5115 \beta_{12} - 1038 \beta_{11} + 1425 \beta_{10} + \cdots + 2874 ) / 2 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 27636 \beta_{15} + 6327 \beta_{14} + 10204 \beta_{13} - 11792 \beta_{12} - 9222 \beta_{11} + \cdots - 56175 ) / 4 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( - 7610 \beta_{15} - 14156 \beta_{14} + 39918 \beta_{13} + 33726 \beta_{12} + 3320 \beta_{11} + \cdots - 48995 ) / 2 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( - 113922 \beta_{15} - 35998 \beta_{14} - 608 \beta_{13} + 79378 \beta_{12} + 40329 \beta_{11} + \cdots + 168351 ) / 2 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( - 54082 \beta_{15} + 73086 \beta_{14} - 310674 \beta_{13} - 182546 \beta_{12} + 16149 \beta_{11} + \cdots + 542566 ) / 2 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( 1656924 \beta_{15} + 681073 \beta_{14} - 604602 \beta_{13} - 1596432 \beta_{12} - 602091 \beta_{11} + \cdots - 1539314 ) / 4 \) Copy content Toggle raw display

Character values

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

\(n\) \(257\) \(261\) \(511\)
\(\chi(n)\) \(-1\) \(-\beta_{9}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
449.1
0.500000 1.00333i
0.500000 + 2.00333i
0.500000 0.331082i
0.500000 + 1.33108i
0.500000 1.74530i
0.500000 + 2.74530i
0.500000 + 0.410882i
0.500000 + 0.589118i
0.500000 + 1.00333i
0.500000 2.00333i
0.500000 + 0.331082i
0.500000 1.33108i
0.500000 + 1.74530i
0.500000 2.74530i
0.500000 0.410882i
0.500000 0.589118i
0 −1.53819 1.53819i 0 −2.16225 0.569800i 0 −4.20241 0 1.73205i 0
449.2 0 −1.53819 1.53819i 0 −0.569800 2.16225i 0 −4.20241 0 1.73205i 0
449.3 0 −0.796225 0.796225i 0 −1.17216 + 1.90421i 0 0.582877 0 1.73205i 0
449.4 0 −0.796225 0.796225i 0 1.90421 1.17216i 0 0.582877 0 1.73205i 0
449.5 0 0.796225 + 0.796225i 0 −1.17216 + 1.90421i 0 −0.582877 0 1.73205i 0
449.6 0 0.796225 + 0.796225i 0 1.90421 1.17216i 0 −0.582877 0 1.73205i 0
449.7 0 1.53819 + 1.53819i 0 −2.16225 0.569800i 0 4.20241 0 1.73205i 0
449.8 0 1.53819 + 1.53819i 0 −0.569800 2.16225i 0 4.20241 0 1.73205i 0
1089.1 0 −1.53819 + 1.53819i 0 −2.16225 + 0.569800i 0 −4.20241 0 1.73205i 0
1089.2 0 −1.53819 + 1.53819i 0 −0.569800 + 2.16225i 0 −4.20241 0 1.73205i 0
1089.3 0 −0.796225 + 0.796225i 0 −1.17216 1.90421i 0 0.582877 0 1.73205i 0
1089.4 0 −0.796225 + 0.796225i 0 1.90421 + 1.17216i 0 0.582877 0 1.73205i 0
1089.5 0 0.796225 0.796225i 0 −1.17216 1.90421i 0 −0.582877 0 1.73205i 0
1089.6 0 0.796225 0.796225i 0 1.90421 + 1.17216i 0 −0.582877 0 1.73205i 0
1089.7 0 1.53819 1.53819i 0 −2.16225 + 0.569800i 0 4.20241 0 1.73205i 0
1089.8 0 1.53819 1.53819i 0 −0.569800 + 2.16225i 0 4.20241 0 1.73205i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 449.8
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
16.e even 4 1 inner
16.f odd 4 1 inner
20.d odd 2 1 inner
80.k odd 4 1 inner
80.q even 4 1 inner

Twists

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

Hecke kernels

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

\( T_{3}^{8} + 24T_{3}^{4} + 36 \) Copy content Toggle raw display
\( T_{29}^{4} - 4T_{29}^{3} + 8T_{29}^{2} + 88T_{29} + 484 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{8} + 24 T^{4} + 36)^{2} \) Copy content Toggle raw display
$5$ \( (T^{8} + 4 T^{7} + \cdots + 625)^{2} \) Copy content Toggle raw display
$7$ \( (T^{4} - 18 T^{2} + 6)^{4} \) Copy content Toggle raw display
$11$ \( (T^{8} + 1784 T^{4} + 456976)^{2} \) Copy content Toggle raw display
$13$ \( (T^{8} + 96 T^{4} + 576)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 36 T^{2} + 216)^{4} \) Copy content Toggle raw display
$19$ \( (T^{8} + 56 T^{4} + 16)^{2} \) Copy content Toggle raw display
$23$ \( (T^{4} - 54 T^{2} + 486)^{4} \) Copy content Toggle raw display
$29$ \( (T^{4} - 4 T^{3} + \cdots + 484)^{4} \) Copy content Toggle raw display
$31$ \( (T^{4} - 16 T^{2} + 16)^{4} \) Copy content Toggle raw display
$37$ \( (T^{8} + 13824 T^{4} + 11943936)^{2} \) Copy content Toggle raw display
$41$ \( (T^{4} + 56 T^{2} + 484)^{4} \) Copy content Toggle raw display
$43$ \( (T^{8} + 6648 T^{4} + 10074276)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} + 66 T^{2} + 6)^{4} \) Copy content Toggle raw display
$53$ \( (T^{8} + 9312 T^{4} + 16451136)^{2} \) Copy content Toggle raw display
$59$ \( (T^{8} + 2168 T^{4} + 234256)^{2} \) Copy content Toggle raw display
$61$ \( (T^{2} + 4 T + 8)^{8} \) Copy content Toggle raw display
$67$ \( (T^{8} + 50136 T^{4} + 67469796)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + 192 T^{2} + 2304)^{4} \) Copy content Toggle raw display
$73$ \( (T^{4} - 108 T^{2} + 1944)^{4} \) Copy content Toggle raw display
$79$ \( (T^{4} - 16 T^{2} + 16)^{4} \) Copy content Toggle raw display
$83$ \( (T^{8} + 2328 T^{4} + 1028196)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} + 56 T^{2} + 16)^{4} \) Copy content Toggle raw display
$97$ \( (T^{4} + 396 T^{2} + 36504)^{4} \) Copy content Toggle raw display
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