Properties

Label 1764.2.b.n
Level $1764$
Weight $2$
Character orbit 1764.b
Analytic conductor $14.086$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1764,2,Mod(1567,1764)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1764, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 0, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1764.1567");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1764 = 2^{2} \cdot 3^{2} \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1764.b (of order \(2\), degree \(1\), 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: \(14.0856109166\)
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: \( x^{16} + 4 x^{14} + 54 x^{12} - 112 x^{11} - 104 x^{10} + 1312 x^{9} - 3159 x^{8} + 2544 x^{7} + \cdots + 782 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 2^{5}\cdot 7^{2} \)
Twist minimal: yes
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.

\(f(q)\) \(=\) \( q + \beta_{7} q^{2} + ( - \beta_{10} + \beta_1 - 1) q^{4} + \beta_{12} q^{5} + \beta_{4} q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{7} q^{2} + ( - \beta_{10} + \beta_1 - 1) q^{4} + \beta_{12} q^{5} + \beta_{4} q^{8} + \beta_{6} q^{10} + (\beta_{11} + \beta_{7} + \beta_{3}) q^{11} + (\beta_{9} + \beta_{6}) q^{13} + ( - \beta_{13} + \beta_{10} - 2 \beta_1 - 2) q^{16} + \beta_{12} q^{17} + ( - \beta_{15} + \beta_{14} + \cdots - \beta_{6}) q^{19}+ \cdots + (2 \beta_{15} + 2 \beta_{14} + \cdots - 3 \beta_{6}) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 8 q^{4}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 8 q^{4} - 40 q^{16} - 16 q^{22} + 16 q^{25} - 64 q^{37} - 64 q^{46} + 40 q^{64} - 64 q^{85} + 64 q^{88}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} + 4 x^{14} + 54 x^{12} - 112 x^{11} - 104 x^{10} + 1312 x^{9} - 3159 x^{8} + 2544 x^{7} + \cdots + 782 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 68460609096708 \nu^{15} - 4470673662808 \nu^{14} + 221129789385746 \nu^{13} + \cdots - 11\!\cdots\!24 ) / 14\!\cdots\!11 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( - 327417918828952 \nu^{15} - 912489737968762 \nu^{14} + \cdots - 47\!\cdots\!28 ) / 66\!\cdots\!63 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 15\!\cdots\!87 \nu^{15} + \cdots - 18\!\cdots\!88 ) / 13\!\cdots\!21 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( - 31\!\cdots\!55 \nu^{15} + \cdots + 48\!\cdots\!48 ) / 18\!\cdots\!03 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 473856923359748 \nu^{15} + 383840295516265 \nu^{14} + \cdots - 35\!\cdots\!00 ) / 14\!\cdots\!11 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 55\!\cdots\!27 \nu^{15} + \cdots - 50\!\cdots\!76 ) / 13\!\cdots\!21 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 59\!\cdots\!31 \nu^{15} + \cdots - 54\!\cdots\!74 ) / 13\!\cdots\!21 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 25\!\cdots\!96 \nu^{15} + \cdots - 21\!\cdots\!50 ) / 46\!\cdots\!41 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 73\!\cdots\!91 \nu^{15} + \cdots - 82\!\cdots\!86 ) / 13\!\cdots\!21 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 26\!\cdots\!94 \nu^{15} + \cdots - 24\!\cdots\!37 ) / 46\!\cdots\!41 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( 84\!\cdots\!72 \nu^{15} + \cdots - 87\!\cdots\!60 ) / 13\!\cdots\!21 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( - 12\!\cdots\!24 \nu^{15} + \cdots + 12\!\cdots\!32 ) / 14\!\cdots\!11 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( - 38\!\cdots\!06 \nu^{15} + \cdots + 40\!\cdots\!23 ) / 46\!\cdots\!41 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 15\!\cdots\!17 \nu^{15} + \cdots - 15\!\cdots\!40 ) / 13\!\cdots\!21 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 24\!\cdots\!03 \nu^{15} + \cdots - 22\!\cdots\!96 ) / 18\!\cdots\!03 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( 3\beta_{15} + 3\beta_{14} - 7\beta_{11} - \beta_{9} - 7\beta_{7} - \beta_{6} + 7\beta_{3} + 7\beta_1 ) / 14 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( - 2 \beta_{15} - 2 \beta_{14} + 14 \beta_{13} - 18 \beta_{12} + 7 \beta_{11} - 14 \beta_{10} + \cdots - 14 ) / 14 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 14 \beta_{15} - 7 \beta_{14} - 21 \beta_{13} + 39 \beta_{12} + 7 \beta_{11} + 42 \beta_{10} - 28 \beta_{9} + \cdots + 21 ) / 14 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( - 26 \beta_{15} + 16 \beta_{14} - 35 \beta_{13} + 68 \beta_{12} - 7 \beta_{11} + 49 \beta_{10} + \cdots - 56 ) / 7 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( - 161 \beta_{15} - 196 \beta_{14} + 315 \beta_{13} - 590 \beta_{12} + 350 \beta_{11} - 490 \beta_{10} + \cdots + 245 ) / 14 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 422 \beta_{15} + 317 \beta_{14} - 420 \beta_{13} + 610 \beta_{12} - 672 \beta_{11} + 560 \beta_{10} + \cdots + 1064 ) / 7 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( - 1152 \beta_{15} + 416 \beta_{14} + 1617 \beta_{13} - 1638 \beta_{12} - 595 \beta_{11} - 2254 \beta_{10} + \cdots - 11907 ) / 14 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( - 680 \beta_{15} - 4208 \beta_{14} + 3115 \beta_{13} - 6244 \beta_{12} + 7336 \beta_{11} - 4263 \beta_{10} + \cdots + 9772 ) / 7 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( 20667 \beta_{15} + 24972 \beta_{14} - 52143 \beta_{13} + 87744 \beta_{12} - 47943 \beta_{11} + \cdots + 24885 ) / 14 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( - 49773 \beta_{15} - 15858 \beta_{14} + 61257 \beta_{13} - 91989 \beta_{12} + 42483 \beta_{11} + \cdots - 143297 ) / 7 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 168752 \beta_{15} - 125850 \beta_{14} + 45353 \beta_{13} - 193248 \beta_{12} + 158557 \beta_{11} + \cdots + 1215907 ) / 14 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( 248970 \beta_{15} + 554352 \beta_{14} - 683242 \beta_{13} + 1268366 \beta_{12} - 1002050 \beta_{11} + \cdots - 989653 ) / 7 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( - 3723771 \beta_{15} - 3352582 \beta_{14} + 6092905 \beta_{13} - 9815208 \beta_{12} + 6721715 \beta_{11} + \cdots - 7018557 ) / 14 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( 5365394 \beta_{15} + 517824 \beta_{14} - 6184157 \beta_{13} + 8209161 \beta_{12} - 2486463 \beta_{11} + \cdots + 25481323 ) / 7 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( - 7914484 \beta_{15} + 31441000 \beta_{14} - 20980519 \beta_{13} + 49492304 \beta_{12} + \cdots - 139549431 ) / 14 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1764\mathbb{Z}\right)^\times\).

\(n\) \(785\) \(883\) \(1081\)
\(\chi(n)\) \(1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1567.1
0.271975 + 0.405613i
0.271975 + 1.48800i
0.271975 1.48800i
0.271975 0.405613i
0.812979 + 2.57288i
0.812979 0.0402481i
0.812979 + 0.0402481i
0.812979 2.57288i
−2.22719 0.0402481i
−2.22719 + 2.57288i
−2.22719 2.57288i
−2.22719 + 0.0402481i
1.14224 + 1.48800i
1.14224 + 0.405613i
1.14224 0.405613i
1.14224 1.48800i
−1.05050 0.946809i 0 0.207107 + 1.98925i 1.60804i 0 0 1.66587 2.28580i 0 −1.52250 + 1.68925i
1567.2 −1.05050 0.946809i 0 0.207107 + 1.98925i 1.60804i 0 0 1.66587 2.28580i 0 1.52250 1.68925i
1567.3 −1.05050 + 0.946809i 0 0.207107 1.98925i 1.60804i 0 0 1.66587 + 2.28580i 0 1.52250 + 1.68925i
1567.4 −1.05050 + 0.946809i 0 0.207107 1.98925i 1.60804i 0 0 1.66587 + 2.28580i 0 −1.52250 1.68925i
1567.5 −0.629640 1.26631i 0 −1.20711 + 1.59465i 2.32685i 0 0 2.77937 + 0.524525i 0 −2.94652 + 1.46508i
1567.6 −0.629640 1.26631i 0 −1.20711 + 1.59465i 2.32685i 0 0 2.77937 + 0.524525i 0 2.94652 1.46508i
1567.7 −0.629640 + 1.26631i 0 −1.20711 1.59465i 2.32685i 0 0 2.77937 0.524525i 0 2.94652 + 1.46508i
1567.8 −0.629640 + 1.26631i 0 −1.20711 1.59465i 2.32685i 0 0 2.77937 0.524525i 0 −2.94652 1.46508i
1567.9 0.629640 1.26631i 0 −1.20711 1.59465i 2.32685i 0 0 −2.77937 + 0.524525i 0 −2.94652 1.46508i
1567.10 0.629640 1.26631i 0 −1.20711 1.59465i 2.32685i 0 0 −2.77937 + 0.524525i 0 2.94652 + 1.46508i
1567.11 0.629640 + 1.26631i 0 −1.20711 + 1.59465i 2.32685i 0 0 −2.77937 0.524525i 0 2.94652 1.46508i
1567.12 0.629640 + 1.26631i 0 −1.20711 + 1.59465i 2.32685i 0 0 −2.77937 0.524525i 0 −2.94652 + 1.46508i
1567.13 1.05050 0.946809i 0 0.207107 1.98925i 1.60804i 0 0 −1.66587 2.28580i 0 −1.52250 1.68925i
1567.14 1.05050 0.946809i 0 0.207107 1.98925i 1.60804i 0 0 −1.66587 2.28580i 0 1.52250 + 1.68925i
1567.15 1.05050 + 0.946809i 0 0.207107 + 1.98925i 1.60804i 0 0 −1.66587 + 2.28580i 0 1.52250 1.68925i
1567.16 1.05050 + 0.946809i 0 0.207107 + 1.98925i 1.60804i 0 0 −1.66587 + 2.28580i 0 −1.52250 + 1.68925i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1567.16
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
4.b odd 2 1 inner
7.b odd 2 1 inner
12.b even 2 1 inner
21.c even 2 1 inner
28.d even 2 1 inner
84.h odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1764.2.b.n 16
3.b odd 2 1 inner 1764.2.b.n 16
4.b odd 2 1 inner 1764.2.b.n 16
7.b odd 2 1 inner 1764.2.b.n 16
12.b even 2 1 inner 1764.2.b.n 16
21.c even 2 1 inner 1764.2.b.n 16
28.d even 2 1 inner 1764.2.b.n 16
84.h odd 2 1 inner 1764.2.b.n 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1764.2.b.n 16 1.a even 1 1 trivial
1764.2.b.n 16 3.b odd 2 1 inner
1764.2.b.n 16 4.b odd 2 1 inner
1764.2.b.n 16 7.b odd 2 1 inner
1764.2.b.n 16 12.b even 2 1 inner
1764.2.b.n 16 21.c even 2 1 inner
1764.2.b.n 16 28.d even 2 1 inner
1764.2.b.n 16 84.h 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 \(S_{2}^{\mathrm{new}}(1764, [\chi])\):

\( T_{5}^{4} + 8T_{5}^{2} + 14 \) Copy content Toggle raw display
\( T_{11}^{4} + 20T_{11}^{2} + 92 \) Copy content Toggle raw display
\( T_{19}^{4} - 88T_{19}^{2} + 1288 \) Copy content Toggle raw display
\( T_{29}^{4} - 84T_{29}^{2} + 1372 \) Copy content Toggle raw display
\( T_{53}^{4} - 80T_{53}^{2} + 448 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{8} + 2 T^{6} + 7 T^{4} + \cdots + 16)^{2} \) Copy content Toggle raw display
$3$ \( T^{16} \) Copy content Toggle raw display
$5$ \( (T^{4} + 8 T^{2} + 14)^{4} \) Copy content Toggle raw display
$7$ \( T^{16} \) Copy content Toggle raw display
$11$ \( (T^{4} + 20 T^{2} + 92)^{4} \) Copy content Toggle raw display
$13$ \( (T^{4} + 20 T^{2} + 98)^{4} \) Copy content Toggle raw display
$17$ \( (T^{4} + 8 T^{2} + 14)^{4} \) Copy content Toggle raw display
$19$ \( (T^{4} - 88 T^{2} + 1288)^{4} \) Copy content Toggle raw display
$23$ \( (T^{4} + 44 T^{2} + 92)^{4} \) Copy content Toggle raw display
$29$ \( (T^{4} - 84 T^{2} + 1372)^{4} \) Copy content Toggle raw display
$31$ \( (T^{4} - 120 T^{2} + 1288)^{4} \) Copy content Toggle raw display
$37$ \( (T^{2} + 8 T - 2)^{8} \) Copy content Toggle raw display
$41$ \( (T^{4} + 144 T^{2} + 1134)^{4} \) Copy content Toggle raw display
$43$ \( (T^{4} + 104 T^{2} + 2576)^{4} \) Copy content Toggle raw display
$47$ \( (T^{4} - 192 T^{2} + 9016)^{4} \) Copy content Toggle raw display
$53$ \( (T^{4} - 80 T^{2} + 448)^{4} \) Copy content Toggle raw display
$59$ \( (T^{4} - 192 T^{2} + 9016)^{4} \) Copy content Toggle raw display
$61$ \( (T^{4} + 20 T^{2} + 98)^{4} \) Copy content Toggle raw display
$67$ \( (T^{4} + 208 T^{2} + 10304)^{4} \) Copy content Toggle raw display
$71$ \( (T^{4} + 180 T^{2} + 7452)^{4} \) Copy content Toggle raw display
$73$ \( (T^{4} + 164 T^{2} + 4802)^{4} \) Copy content Toggle raw display
$79$ \( (T^{4} + 248 T^{2} + 2576)^{4} \) Copy content Toggle raw display
$83$ \( (T^{4} - 384 T^{2} + 36064)^{4} \) Copy content Toggle raw display
$89$ \( (T^{4} + 184 T^{2} + 14)^{4} \) Copy content Toggle raw display
$97$ \( (T^{4} + 196 T^{2} + 4802)^{4} \) Copy content Toggle raw display
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