Properties

Label 1020.2.bg.a
Level $1020$
Weight $2$
Character orbit 1020.bg
Analytic conductor $8.145$
Analytic rank $0$
Dimension $16$
CM discriminant -51
Inner twists $8$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1020,2,Mod(713,1020)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1020, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([0, 2, 3, 2]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1020.713");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1020 = 2^{2} \cdot 3 \cdot 5 \cdot 17 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1020.bg (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: \(8.14474100617\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(8\) over \(\Q(i)\)
Coefficient field: 16.0.196571825135013064605696.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 49x^{12} + 2145x^{8} - 12544x^{4} + 65536 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{4}\cdot 3^{4}\cdot 5^{2} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{U}(1)[D_{4}]$

$q$-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.

\(f(q)\) \(=\) \( q - \beta_{13} q^{3} - \beta_{12} q^{5} - 3 \beta_{10} q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{13} q^{3} - \beta_{12} q^{5} - 3 \beta_{10} q^{9} + (\beta_{13} + \beta_{12} + \cdots - \beta_{2}) q^{11}+ \cdots + ( - 3 \beta_{14} + 3 \beta_{13} + \cdots + 3 \beta_{2}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q+O(q^{10}) \) Copy content Toggle raw display \( 16 q + 4 q^{13} - 36 q^{33} + 44 q^{43} - 32 q^{55} + 64 q^{67} - 144 q^{81} - 96 q^{87}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 49x^{12} + 2145x^{8} - 12544x^{4} + 65536 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -45\nu^{12} + 2717\nu^{8} - 114829\nu^{4} + 930560 ) / 164736 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 233\nu^{13} - 12441\nu^{9} + 499785\nu^{5} - 6876416\nu ) / 3953664 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 43\nu^{13} - 1595\nu^{9} + 64075\nu^{5} + 277248\nu ) / 506880 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -49\nu^{13} + 2145\nu^{9} - 105105\nu^{5} + 340096\nu ) / 274560 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( - 891 \nu^{14} - 6592 \nu^{12} + 46475 \nu^{10} + 228800 \nu^{8} - 2094235 \nu^{6} + \cdots - 60813312 ) / 26357760 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -240\nu^{15} + 2929\nu^{13} - 139425\nu^{9} + 6282705\nu^{5} - 15625200\nu^{3} - 16973056\nu ) / 19768320 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( - 891 \nu^{14} + 9088 \nu^{12} + 46475 \nu^{10} - 457600 \nu^{8} - 2094235 \nu^{6} + \cdots - 55427072 ) / 26357760 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 891 \nu^{14} - 9408 \nu^{12} - 46475 \nu^{10} + 411840 \nu^{8} + 2094235 \nu^{6} + \cdots + 65298432 ) / 26357760 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( -81\nu^{15} + 4225\nu^{11} - 190385\nu^{7} + 2097664\nu^{3} ) / 2396160 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 49\nu^{14} - 2145\nu^{10} + 96657\nu^{6} - 65536\nu^{2} ) / 1216512 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( 303 \nu^{14} + 1176 \nu^{12} - 20735 \nu^{10} - 51480 \nu^{8} + 832975 \nu^{6} + 2522520 \nu^{4} + \cdots - 8162304 ) / 6589440 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( -701\nu^{15} + 27885\nu^{11} - 1256541\nu^{7} - 3314752\nu^{3} ) / 15814656 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( -211\nu^{15} + 9955\nu^{11} - 417395\nu^{7} + 1372544\nu^{3} ) / 4055040 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( - 2609 \nu^{15} + 13980 \nu^{13} + 139425 \nu^{11} - 746460 \nu^{9} - 6282705 \nu^{7} + \cdots - 175365120 \nu ) / 79073280 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( -361\nu^{14} + 12441\nu^{10} - 499785\nu^{6} - 5410688\nu^{2} ) / 3953664 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( 4\beta_{14} - 2\beta_{12} - 2\beta_{9} + 2\beta_{6} + \beta_{4} - 14\beta_{2} ) / 15 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{15} + \beta_{11} + 7\beta_{10} - \beta_{8} + 3\beta_{7} + 3\beta_{5} + 3\beta_1 ) / 3 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -13\beta_{14} - 31\beta_{12} + 44\beta_{9} + 26\beta_{6} + 13\beta_{4} + 13\beta_{2} ) / 15 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( -4\beta_{8} - 5\beta_{7} + \beta_{5} - 2\beta _1 + 13 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -14\beta_{14} + 7\beta_{12} + 7\beta_{9} - 7\beta_{6} - 221\beta_{4} - 270\beta_{3} - 221\beta_{2} ) / 15 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 130\beta_{15} - 65\beta_{11} + 478\beta_{10} - 52\beta_{8} + 39\beta_{7} + 39\beta_{5} + 39\beta_1 ) / 3 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( -622\beta_{14} + 1950\beta_{13} - 2404\beta_{12} + 311\beta_{9} + 1244\beta_{6} + 622\beta_{4} + 622\beta_{2} ) / 15 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( -233\beta_{8} - 190\beta_{7} - 43\beta_{5} + 104\beta _1 - 509 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( -9386\beta_{14} + 4693\beta_{12} + 4693\beta_{9} - 4693\beta_{6} - 11084\beta_{4} + 6391\beta_{2} ) / 15 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( 2929\beta_{15} - 5858\beta_{11} + 9919\beta_{10} - 1531\beta_{8} - 2796\beta_{7} - 2796\beta_{5} - 2796\beta_1 ) / 3 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 4127 \beta_{14} + 87870 \beta_{13} - 58981 \beta_{12} - 58981 \beta_{9} - 8254 \beta_{6} + \cdots - 4127 \beta_{2} ) / 15 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( -3861\beta_{8} + 1287\beta_{7} - 5148\beta_{5} + 7722\beta _1 - 43226 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( - 353084 \beta_{14} + 176542 \beta_{12} + 176542 \beta_{9} - 176542 \beta_{6} + \cdots + 656644 \beta_{2} ) / 15 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( - 126881 \beta_{15} - 126881 \beta_{11} - 424847 \beta_{10} + 34217 \beta_{8} - 195315 \beta_{7} + \cdots - 195315 \beta_1 ) / 3 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( 1340573 \beta_{14} + 1771151 \beta_{12} - 3111724 \beta_{9} - 2681146 \beta_{6} + \cdots - 1340573 \beta_{2} ) / 15 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1020\mathbb{Z}\right)^\times\).

\(n\) \(241\) \(341\) \(511\) \(817\)
\(\chi(n)\) \(-1\) \(-1\) \(1\) \(\beta_{10}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
713.1
0.404160 1.50834i
1.50834 0.404160i
−2.47427 + 0.662979i
−0.662979 + 2.47427i
0.662979 2.47427i
2.47427 0.662979i
−1.50834 + 0.404160i
−0.404160 + 1.50834i
0.404160 + 1.50834i
1.50834 + 0.404160i
−2.47427 0.662979i
−0.662979 2.47427i
0.662979 + 2.47427i
2.47427 + 0.662979i
−1.50834 0.404160i
−0.404160 1.50834i
0 −1.22474 1.22474i 0 −2.21545 + 0.302947i 0 0 0 3.00000i 0
713.2 0 −1.22474 1.22474i 0 0.302947 2.21545i 0 0 0 3.00000i 0
713.3 0 −1.22474 1.22474i 0 1.37009 + 1.76716i 0 0 0 3.00000i 0
713.4 0 −1.22474 1.22474i 0 1.76716 + 1.37009i 0 0 0 3.00000i 0
713.5 0 1.22474 + 1.22474i 0 −1.76716 1.37009i 0 0 0 3.00000i 0
713.6 0 1.22474 + 1.22474i 0 −1.37009 1.76716i 0 0 0 3.00000i 0
713.7 0 1.22474 + 1.22474i 0 −0.302947 + 2.21545i 0 0 0 3.00000i 0
713.8 0 1.22474 + 1.22474i 0 2.21545 0.302947i 0 0 0 3.00000i 0
917.1 0 −1.22474 + 1.22474i 0 −2.21545 0.302947i 0 0 0 3.00000i 0
917.2 0 −1.22474 + 1.22474i 0 0.302947 + 2.21545i 0 0 0 3.00000i 0
917.3 0 −1.22474 + 1.22474i 0 1.37009 1.76716i 0 0 0 3.00000i 0
917.4 0 −1.22474 + 1.22474i 0 1.76716 1.37009i 0 0 0 3.00000i 0
917.5 0 1.22474 1.22474i 0 −1.76716 + 1.37009i 0 0 0 3.00000i 0
917.6 0 1.22474 1.22474i 0 −1.37009 + 1.76716i 0 0 0 3.00000i 0
917.7 0 1.22474 1.22474i 0 −0.302947 2.21545i 0 0 0 3.00000i 0
917.8 0 1.22474 1.22474i 0 2.21545 + 0.302947i 0 0 0 3.00000i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 713.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
51.c odd 2 1 CM by \(\Q(\sqrt{-51}) \)
3.b odd 2 1 inner
5.c odd 4 1 inner
15.e even 4 1 inner
17.b even 2 1 inner
85.g odd 4 1 inner
255.o even 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1020.2.bg.a 16
3.b odd 2 1 inner 1020.2.bg.a 16
5.c odd 4 1 inner 1020.2.bg.a 16
15.e even 4 1 inner 1020.2.bg.a 16
17.b even 2 1 inner 1020.2.bg.a 16
51.c odd 2 1 CM 1020.2.bg.a 16
85.g odd 4 1 inner 1020.2.bg.a 16
255.o even 4 1 inner 1020.2.bg.a 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1020.2.bg.a 16 1.a even 1 1 trivial
1020.2.bg.a 16 3.b odd 2 1 inner
1020.2.bg.a 16 5.c odd 4 1 inner
1020.2.bg.a 16 15.e even 4 1 inner
1020.2.bg.a 16 17.b even 2 1 inner
1020.2.bg.a 16 51.c odd 2 1 CM
1020.2.bg.a 16 85.g odd 4 1 inner
1020.2.bg.a 16 255.o even 4 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{7} \) acting on \(S_{2}^{\mathrm{new}}(1020, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{4} + 9)^{4} \) Copy content Toggle raw display
$5$ \( T^{16} + T^{12} + \cdots + 390625 \) Copy content Toggle raw display
$7$ \( T^{16} \) Copy content Toggle raw display
$11$ \( (T^{8} - 88 T^{6} + \cdots + 114244)^{2} \) Copy content Toggle raw display
$13$ \( (T^{8} - 2 T^{7} + \cdots + 13924)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 289)^{4} \) Copy content Toggle raw display
$19$ \( (T^{4} + 63 T^{2} + 36)^{4} \) Copy content Toggle raw display
$23$ \( (T^{8} + 9233 T^{4} + 7311616)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} + 116 T^{2} + 100)^{4} \) Copy content Toggle raw display
$31$ \( T^{16} \) Copy content Toggle raw display
$37$ \( T^{16} \) Copy content Toggle raw display
$41$ \( (T^{8} - 328 T^{6} + \cdots + 669124)^{2} \) Copy content Toggle raw display
$43$ \( (T^{8} - 22 T^{7} + \cdots + 18679684)^{2} \) Copy content Toggle raw display
$47$ \( T^{16} \) Copy content Toggle raw display
$53$ \( T^{16} \) Copy content Toggle raw display
$59$ \( T^{16} \) Copy content Toggle raw display
$61$ \( T^{16} \) Copy content Toggle raw display
$67$ \( (T^{4} - 16 T^{3} + \cdots + 4900)^{4} \) Copy content Toggle raw display
$71$ \( (T^{4} - 284 T^{2} + 16900)^{4} \) Copy content Toggle raw display
$73$ \( T^{16} \) Copy content Toggle raw display
$79$ \( T^{16} \) Copy content Toggle raw display
$83$ \( T^{16} \) Copy content Toggle raw display
$89$ \( T^{16} \) Copy content Toggle raw display
$97$ \( T^{16} \) Copy content Toggle raw display
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