Properties

Label 1728.2.p.b
Level $1728$
Weight $2$
Character orbit 1728.p
Analytic conductor $13.798$
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] = [1728,2,Mod(287,1728)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1728, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([3, 3, 5]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1728.287");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1728 = 2^{6} \cdot 3^{3} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1728.p (of order \(6\), degree \(2\), 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: \(13.7981494693\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(8\) over \(\Q(\zeta_{6})\)
Coefficient field: 16.0.7465802011608416256.3
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - x^{14} + x^{12} + 8x^{10} - 20x^{8} + 32x^{6} + 16x^{4} - 64x^{2} + 256 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{12}\cdot 3^{4} \)
Twist minimal: no (minimal twist has level 576)
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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.

\(f(q)\) \(=\) \( q + \beta_{3} q^{5} + \beta_{14} q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{3} q^{5} + \beta_{14} q^{7} + ( - \beta_{10} - \beta_{7}) q^{11} + ( - 2 \beta_{5} + \beta_{3}) q^{13} + (2 \beta_{9} - 2 \beta_{4} - \beta_{2} + 1) q^{17} + ( - 2 \beta_{10} - \beta_{7} + \cdots - \beta_1) q^{19}+ \cdots + (2 \beta_{9} + 3 \beta_{4} - 2 \beta_{2} - 3) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q+O(q^{10}) \) Copy content Toggle raw display \( 16 q + 4 q^{25} - 72 q^{41} + 12 q^{49} + 108 q^{65} - 56 q^{73} - 16 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - x^{14} + x^{12} + 8x^{10} - 20x^{8} + 32x^{6} + 16x^{4} - 64x^{2} + 256 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -\nu^{13} + \nu^{11} - \nu^{9} + 8\nu^{7} + 4\nu^{5} - 16\nu^{3} + 144\nu ) / 96 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{12} + 3\nu^{10} - 3\nu^{8} - 4\nu^{6} + 12\nu^{4} - 48\nu^{2} + 16 ) / 48 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -\nu^{14} - 7\nu^{12} + 7\nu^{10} - 16\nu^{8} - 44\nu^{6} + 64\nu^{4} - 144\nu^{2} - 64 ) / 192 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( \nu^{14} - \nu^{12} + \nu^{10} - 8\nu^{8} - 4\nu^{6} + 16\nu^{4} - 48\nu^{2} + 192 ) / 192 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( \nu^{14} - 5\nu^{12} + 5\nu^{10} + 4\nu^{8} - 52\nu^{6} - 16\nu^{4} - 48\nu^{2} - 128 ) / 192 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( \nu^{15} - \nu^{13} + \nu^{11} + 40\nu^{9} - 52\nu^{7} + 64\nu^{5} + 144\nu^{3} - 576\nu ) / 384 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -\nu^{15} - 7\nu^{13} + 7\nu^{11} - 28\nu^{7} + 112\nu^{5} - 368\nu^{3} ) / 384 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( -\nu^{15} + 17\nu^{13} - 9\nu^{11} + 16\nu^{9} + 76\nu^{7} - 144\nu^{5} + 80\nu^{3} + 320\nu ) / 576 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 3\nu^{14} - 3\nu^{12} + 19\nu^{10} + 8\nu^{8} - 44\nu^{6} + 160\nu^{4} - 16\nu^{2} + 64 ) / 192 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( \nu^{13} - 4\nu^{11} + 4\nu^{9} + \nu^{7} - 16\nu^{5} + 64\nu^{3} - 72\nu ) / 48 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( -3\nu^{14} - \nu^{12} + 33\nu^{10} - 60\nu^{8} + 124\nu^{6} + 48\nu^{4} - 432\nu^{2} + 896 ) / 192 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( \nu^{15} - 5\nu^{13} + 9\nu^{11} - 16\nu^{9} - 16\nu^{7} + 144\nu^{5} - 80\nu^{3} + 160\nu ) / 288 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( -3\nu^{14} + 11\nu^{12} - 27\nu^{10} - 20\nu^{6} - 192\nu^{4} + 528\nu^{2} - 448 ) / 192 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 13\nu^{15} - 5\nu^{13} + 21\nu^{11} + 32\nu^{9} + 140\nu^{7} + 192\nu^{5} - 368\nu^{3} + 64\nu ) / 1152 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( -13\nu^{15} + 17\nu^{13} + 15\nu^{11} - 68\nu^{9} + 388\nu^{7} - 48\nu^{5} - 208\nu^{3} + 128\nu ) / 1152 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( -\beta_{15} - \beta_{14} + \beta_{12} + 2\beta_{8} + 3\beta_1 ) / 6 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 2\beta_{13} + \beta_{11} + 3\beta_{9} - 3\beta_{2} ) / 6 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( \beta_{15} - 2\beta_{14} + 2\beta_{12} - 2\beta_{8} - 6\beta_{7} + 3\beta_{6} + 3\beta_1 ) / 6 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -\beta_{13} - 2\beta_{11} + 3\beta_{9} - 12\beta_{5} + 6\beta_{3} ) / 6 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 2\beta_{15} - \beta_{14} + 16\beta_{12} + 6\beta_{10} + 8\beta_{8} + 6\beta_{7} + 3\beta_{6} ) / 6 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -\beta_{13} + \beta_{11} - 2\beta_{5} - 2\beta_{3} - 3\beta_{2} - 8 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 13\beta_{15} + 13\beta_{14} - 4\beta_{12} + 6\beta_{10} - 8\beta_{8} + 9\beta_1 ) / 6 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( -14\beta_{13} - 7\beta_{11} - 3\beta_{9} + 6\beta_{5} - 72\beta_{4} - 12\beta_{3} + 3\beta_{2} + 72 ) / 6 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( -\beta_{15} + 2\beta_{14} - 20\beta_{12} + 20\beta_{8} + 18\beta_{7} + 45\beta_{6} + 45\beta_1 ) / 6 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( 13\beta_{13} + 26\beta_{11} + 33\beta_{9} + 60\beta_{5} - 72\beta_{4} - 30\beta_{3} ) / 6 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 22\beta_{15} - 11\beta_{14} - 40\beta_{12} - 102\beta_{10} - 20\beta_{8} - 102\beta_{7} + 81\beta_{6} ) / 6 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( 5\beta_{13} - 5\beta_{11} - 14\beta_{5} - 14\beta_{3} + 39\beta_{2} + 8 ) / 2 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( -25\beta_{15} - 25\beta_{14} + 124\beta_{12} - 30\beta_{10} + 248\beta_{8} - 165\beta_1 ) / 6 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( -10\beta_{13} - 5\beta_{11} + 39\beta_{9} + 114\beta_{5} + 648\beta_{4} - 228\beta_{3} - 39\beta_{2} - 648 ) / 6 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( -179\beta_{15} + 358\beta_{14} + 20\beta_{12} - 20\beta_{8} - 138\beta_{7} - 201\beta_{6} - 201\beta_1 ) / 6 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1728\mathbb{Z}\right)^\times\).

\(n\) \(325\) \(703\) \(1217\)
\(\chi(n)\) \(-1\) \(-1\) \(\beta_{4}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
287.1
−0.977642 1.02187i
0.977642 + 1.02187i
1.18353 0.774115i
−1.18353 + 0.774115i
0.0786378 1.41203i
−0.0786378 + 1.41203i
1.37379 + 0.335728i
−1.37379 0.335728i
−0.977642 + 1.02187i
0.977642 1.02187i
1.18353 + 0.774115i
−1.18353 0.774115i
0.0786378 + 1.41203i
−0.0786378 1.41203i
1.37379 0.335728i
−1.37379 + 0.335728i
0 0 0 −1.35760 + 2.35143i 0 −2.92048 + 1.68614i 0 0 0
287.2 0 0 0 −1.35760 + 2.35143i 0 2.92048 1.68614i 0 0 0
287.3 0 0 0 −0.637910 + 1.10489i 0 −2.05446 + 1.18614i 0 0 0
287.4 0 0 0 −0.637910 + 1.10489i 0 2.05446 1.18614i 0 0 0
287.5 0 0 0 0.637910 1.10489i 0 −2.05446 + 1.18614i 0 0 0
287.6 0 0 0 0.637910 1.10489i 0 2.05446 1.18614i 0 0 0
287.7 0 0 0 1.35760 2.35143i 0 −2.92048 + 1.68614i 0 0 0
287.8 0 0 0 1.35760 2.35143i 0 2.92048 1.68614i 0 0 0
1439.1 0 0 0 −1.35760 2.35143i 0 −2.92048 1.68614i 0 0 0
1439.2 0 0 0 −1.35760 2.35143i 0 2.92048 + 1.68614i 0 0 0
1439.3 0 0 0 −0.637910 1.10489i 0 −2.05446 1.18614i 0 0 0
1439.4 0 0 0 −0.637910 1.10489i 0 2.05446 + 1.18614i 0 0 0
1439.5 0 0 0 0.637910 + 1.10489i 0 −2.05446 1.18614i 0 0 0
1439.6 0 0 0 0.637910 + 1.10489i 0 2.05446 + 1.18614i 0 0 0
1439.7 0 0 0 1.35760 + 2.35143i 0 −2.92048 1.68614i 0 0 0
1439.8 0 0 0 1.35760 + 2.35143i 0 2.92048 + 1.68614i 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 287.8
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
9.d odd 6 1 inner
36.h even 6 1 inner
72.j odd 6 1 inner
72.l even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1728.2.p.b 16
3.b odd 2 1 576.2.p.b 16
4.b odd 2 1 inner 1728.2.p.b 16
8.b even 2 1 inner 1728.2.p.b 16
8.d odd 2 1 inner 1728.2.p.b 16
9.c even 3 1 576.2.p.b 16
9.c even 3 1 5184.2.f.c 16
9.d odd 6 1 inner 1728.2.p.b 16
9.d odd 6 1 5184.2.f.c 16
12.b even 2 1 576.2.p.b 16
24.f even 2 1 576.2.p.b 16
24.h odd 2 1 576.2.p.b 16
36.f odd 6 1 576.2.p.b 16
36.f odd 6 1 5184.2.f.c 16
36.h even 6 1 inner 1728.2.p.b 16
36.h even 6 1 5184.2.f.c 16
72.j odd 6 1 inner 1728.2.p.b 16
72.j odd 6 1 5184.2.f.c 16
72.l even 6 1 inner 1728.2.p.b 16
72.l even 6 1 5184.2.f.c 16
72.n even 6 1 576.2.p.b 16
72.n even 6 1 5184.2.f.c 16
72.p odd 6 1 576.2.p.b 16
72.p odd 6 1 5184.2.f.c 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
576.2.p.b 16 3.b odd 2 1
576.2.p.b 16 9.c even 3 1
576.2.p.b 16 12.b even 2 1
576.2.p.b 16 24.f even 2 1
576.2.p.b 16 24.h odd 2 1
576.2.p.b 16 36.f odd 6 1
576.2.p.b 16 72.n even 6 1
576.2.p.b 16 72.p odd 6 1
1728.2.p.b 16 1.a even 1 1 trivial
1728.2.p.b 16 4.b odd 2 1 inner
1728.2.p.b 16 8.b even 2 1 inner
1728.2.p.b 16 8.d odd 2 1 inner
1728.2.p.b 16 9.d odd 6 1 inner
1728.2.p.b 16 36.h even 6 1 inner
1728.2.p.b 16 72.j odd 6 1 inner
1728.2.p.b 16 72.l even 6 1 inner
5184.2.f.c 16 9.c even 3 1
5184.2.f.c 16 9.d odd 6 1
5184.2.f.c 16 36.f odd 6 1
5184.2.f.c 16 36.h even 6 1
5184.2.f.c 16 72.j odd 6 1
5184.2.f.c 16 72.l even 6 1
5184.2.f.c 16 72.n even 6 1
5184.2.f.c 16 72.p odd 6 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{8} + 9T_{5}^{6} + 69T_{5}^{4} + 108T_{5}^{2} + 144 \) acting on \(S_{2}^{\mathrm{new}}(1728, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( T^{16} \) Copy content Toggle raw display
$5$ \( (T^{8} + 9 T^{6} + \cdots + 144)^{2} \) Copy content Toggle raw display
$7$ \( (T^{8} - 17 T^{6} + \cdots + 4096)^{2} \) Copy content Toggle raw display
$11$ \( (T^{8} - 12 T^{6} + 141 T^{4} + \cdots + 9)^{2} \) Copy content Toggle raw display
$13$ \( (T^{8} - 27 T^{6} + \cdots + 11664)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 63 T^{2} + 324)^{4} \) Copy content Toggle raw display
$19$ \( (T^{4} - 45 T^{2} + 432)^{4} \) Copy content Toggle raw display
$23$ \( (T^{8} + 63 T^{6} + \cdots + 104976)^{2} \) Copy content Toggle raw display
$29$ \( (T^{8} + 45 T^{6} + \cdots + 186624)^{2} \) Copy content Toggle raw display
$31$ \( (T^{8} - 17 T^{6} + \cdots + 4096)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} + 144 T^{2} + 432)^{4} \) Copy content Toggle raw display
$41$ \( (T^{2} + 9 T + 27)^{8} \) Copy content Toggle raw display
$43$ \( (T^{8} + 180 T^{6} + \cdots + 60886809)^{2} \) Copy content Toggle raw display
$47$ \( (T^{8} + 63 T^{6} + \cdots + 104976)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} - 240 T^{2} + 12288)^{4} \) Copy content Toggle raw display
$59$ \( (T^{8} - 180 T^{6} + \cdots + 60886809)^{2} \) Copy content Toggle raw display
$61$ \( (T^{8} - 135 T^{6} + \cdots + 15116544)^{2} \) Copy content Toggle raw display
$67$ \( (T^{8} + 108 T^{6} + \cdots + 59049)^{2} \) Copy content Toggle raw display
$71$ \( (T^{2} - 108)^{8} \) Copy content Toggle raw display
$73$ \( (T^{2} + 7 T + 4)^{8} \) Copy content Toggle raw display
$79$ \( (T^{8} - 173 T^{6} + \cdots + 14776336)^{2} \) Copy content Toggle raw display
$83$ \( (T^{8} - 177 T^{6} + \cdots + 12027024)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} + 252 T^{2} + 5184)^{4} \) Copy content Toggle raw display
$97$ \( (T^{4} + 4 T^{3} + \cdots + 841)^{4} \) Copy content Toggle raw display
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