Properties

Label 1428.2.cc.b
Level $1428$
Weight $2$
Character orbit 1428.cc
Analytic conductor $11.403$
Analytic rank $0$
Dimension $16$
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] = [1428,2,Mod(361,1428)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1428, base_ring=CyclotomicField(12))
 
chi = DirichletCharacter(H, H._module([0, 0, 8, 9]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1428.361");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1428 = 2^{2} \cdot 3 \cdot 7 \cdot 17 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1428.cc (of order \(12\), degree \(4\), 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: \(11.4026374086\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(4\) over \(\Q(\zeta_{12})\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 4x^{14} + 8x^{12} - 88x^{10} + 127x^{8} + 616x^{6} + 392x^{4} + 1372x^{2} + 2401 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{17}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{12}]$

$q$-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.

\(f(q)\) \(=\) \( q + (\beta_{14} - \beta_{5}) q^{3} + ( - \beta_{12} - \beta_{11} + \cdots + \beta_{6}) q^{5}+ \cdots + ( - \beta_{11} - \beta_{9}) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + (\beta_{14} - \beta_{5}) q^{3} + ( - \beta_{12} - \beta_{11} + \cdots + \beta_{6}) q^{5}+ \cdots + ( - \beta_{15} + \beta_{10} + \beta_{9} + \cdots + 1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 8 q^{5} + 24 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 8 q^{5} + 24 q^{7} - 8 q^{11} + 16 q^{13} - 16 q^{21} + 24 q^{23} - 16 q^{29} + 16 q^{31} - 48 q^{35} - 16 q^{37} - 8 q^{39} + 8 q^{45} - 16 q^{47} + 16 q^{51} - 32 q^{55} + 16 q^{57} - 24 q^{63} - 24 q^{65} + 24 q^{67} - 32 q^{71} + 8 q^{73} - 8 q^{75} + 8 q^{79} + 8 q^{81} - 64 q^{85} + 32 q^{91} - 8 q^{95} - 112 q^{97} + 16 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 4x^{14} + 8x^{12} - 88x^{10} + 127x^{8} + 616x^{6} + 392x^{4} + 1372x^{2} + 2401 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 30\nu^{14} + 161\nu^{12} - 420\nu^{10} - 4215\nu^{8} - 7868\nu^{6} - 11025\nu^{4} + 714765\nu^{2} - 19208 ) / 1167705 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 30 \nu^{15} + 161 \nu^{13} - 420 \nu^{11} - 4215 \nu^{9} - 7868 \nu^{7} - 11025 \nu^{5} + \cdots - 19208 \nu ) / 1167705 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 562 \nu^{15} - 1320 \nu^{13} - 3150 \nu^{11} - 23356 \nu^{9} - 59010 \nu^{7} + 1016775 \nu^{5} + \cdots - 144060 \nu ) / 2724645 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 13456 \nu^{14} - 110867 \nu^{12} + 378450 \nu^{10} - 1890568 \nu^{8} + 8361131 \nu^{6} + \cdots - 19565749 ) / 57217545 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( - 13456 \nu^{15} + 110867 \nu^{13} - 378450 \nu^{11} + 1890568 \nu^{9} - 8361131 \nu^{7} + \cdots + 19565749 \nu ) / 57217545 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( - 16200 \nu^{14} + 111553 \nu^{12} - 455625 \nu^{10} + 2276100 \nu^{8} - 7263874 \nu^{6} + \cdots - 57710779 ) / 57217545 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( - 16200 \nu^{15} + 111553 \nu^{13} - 455625 \nu^{11} + 2276100 \nu^{9} - 7263874 \nu^{7} + \cdots - 57710779 \nu ) / 57217545 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( - 464 \nu^{14} + 3823 \nu^{12} - 13050 \nu^{10} + 65192 \nu^{8} - 244470 \nu^{6} + 170520 \nu^{4} + \cdots - 596820 ) / 1271501 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( - 464 \nu^{15} + 3823 \nu^{13} - 13050 \nu^{11} + 65192 \nu^{9} - 244470 \nu^{7} + \cdots - 596820 \nu ) / 1271501 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( 10894 \nu^{14} - 66585 \nu^{12} + 173700 \nu^{10} - 1141372 \nu^{8} + 3253980 \nu^{6} + \cdots + 7943880 ) / 19072515 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( 1124 \nu^{14} - 5336 \nu^{12} + 13920 \nu^{10} - 122537 \nu^{8} + 260768 \nu^{6} + 365400 \nu^{4} + \cdots + 2370473 ) / 1733865 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( - 1124 \nu^{15} + 5336 \nu^{13} - 13920 \nu^{11} + 122537 \nu^{9} - 260768 \nu^{7} + \cdots - 636608 \nu ) / 1733865 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( - 39307 \nu^{14} + 154484 \nu^{12} - 313770 \nu^{10} + 3381841 \nu^{8} - 4606457 \nu^{6} + \cdots - 51223277 ) / 57217545 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 39307 \nu^{15} - 154484 \nu^{13} + 313770 \nu^{11} - 3381841 \nu^{9} + 4606457 \nu^{7} + \cdots + 51223277 \nu ) / 57217545 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( -\beta_{12} + \beta_{11} + 3\beta_{2} + 1 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{13} - \beta_{10} + \beta_{4} + 3\beta_{3} \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( 6\beta_{14} + 11\beta_{11} + 11\beta_{9} - 6\beta_{7} + 6\beta_{2} \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( -6\beta_{15} - 6\beta_{8} + 11\beta_{4} + 6\beta_{3} \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( 29\beta_{9} + 45\beta_{5} + 29 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( 29\beta_{10} - 45\beta_{6} + 29\beta_1 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( -132\beta_{14} - 193\beta_{12} + 132\beta_{5} + 132\beta_{2} + 193 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( 132\beta_{15} + 193\beta_{13} - 132\beta_{6} + 132\beta_{3} \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( -589\beta_{12} + 589\beta_{11} + 589\beta_{9} - 843\beta_{7} + 843\beta_{2} \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( 589\beta_{13} - 843\beta_{8} + 589\beta_{4} + 843\beta_{3} - 589\beta_1 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( 3707\beta_{9} - 2610\beta_{7} + 2610\beta_{5} \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( 3707\beta_{10} - 2610\beta_{8} - 2610\beta_{6} \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( -16341\beta_{14} - 11537\beta_{12} - 11537\beta_{11} + 16341\beta_{5} + 11537 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( 16341\beta_{15} + 11537\beta_{13} + 11537\beta_{10} - 16341\beta_{6} - 11537\beta_{4} \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1428\mathbb{Z}\right)^\times\).

\(n\) \(409\) \(715\) \(953\) \(1261\)
\(\chi(n)\) \(-\beta_{12}\) \(1\) \(1\) \(\beta_{9}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
361.1
−0.164369 1.24851i
0.164369 + 1.24851i
2.08303 0.274236i
−2.08303 + 0.274236i
−0.164369 + 1.24851i
0.164369 1.24851i
2.08303 + 0.274236i
−2.08303 0.274236i
1.27901 1.66684i
−1.27901 + 1.66684i
0.999054 + 0.766601i
−0.999054 0.766601i
1.27901 + 1.66684i
−1.27901 1.66684i
0.999054 0.766601i
−0.999054 + 0.766601i
0 −0.258819 0.965926i 0 −3.61359 0.968258i 0 2.62484 0.331951i 0 −0.866025 + 0.500000i 0
361.2 0 −0.258819 0.965926i 0 0.881536 + 0.236207i 0 2.62484 0.331951i 0 −0.866025 + 0.500000i 0
361.3 0 0.258819 + 0.965926i 0 −2.91927 0.782216i 0 2.10721 + 1.59990i 0 −0.866025 + 0.500000i 0
361.4 0 0.258819 + 0.965926i 0 0.187220 + 0.0501655i 0 2.10721 + 1.59990i 0 −0.866025 + 0.500000i 0
625.1 0 −0.258819 + 0.965926i 0 −3.61359 + 0.968258i 0 2.62484 + 0.331951i 0 −0.866025 0.500000i 0
625.2 0 −0.258819 + 0.965926i 0 0.881536 0.236207i 0 2.62484 + 0.331951i 0 −0.866025 0.500000i 0
625.3 0 0.258819 0.965926i 0 −2.91927 + 0.782216i 0 2.10721 1.59990i 0 −0.866025 0.500000i 0
625.4 0 0.258819 0.965926i 0 0.187220 0.0501655i 0 2.10721 1.59990i 0 −0.866025 0.500000i 0
1033.1 0 −0.965926 + 0.258819i 0 −0.0501655 + 0.187220i 0 1.59990 2.10721i 0 0.866025 0.500000i 0
1033.2 0 −0.965926 + 0.258819i 0 0.782216 2.91927i 0 1.59990 2.10721i 0 0.866025 0.500000i 0
1033.3 0 0.965926 0.258819i 0 −0.236207 + 0.881536i 0 −0.331951 2.62484i 0 0.866025 0.500000i 0
1033.4 0 0.965926 0.258819i 0 0.968258 3.61359i 0 −0.331951 2.62484i 0 0.866025 0.500000i 0
1381.1 0 −0.965926 0.258819i 0 −0.0501655 0.187220i 0 1.59990 + 2.10721i 0 0.866025 + 0.500000i 0
1381.2 0 −0.965926 0.258819i 0 0.782216 + 2.91927i 0 1.59990 + 2.10721i 0 0.866025 + 0.500000i 0
1381.3 0 0.965926 + 0.258819i 0 −0.236207 0.881536i 0 −0.331951 + 2.62484i 0 0.866025 + 0.500000i 0
1381.4 0 0.965926 + 0.258819i 0 0.968258 + 3.61359i 0 −0.331951 + 2.62484i 0 0.866025 + 0.500000i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 361.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.c even 3 1 inner
17.c even 4 1 inner
119.n even 12 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1428.2.cc.b 16
7.c even 3 1 inner 1428.2.cc.b 16
17.c even 4 1 inner 1428.2.cc.b 16
119.n even 12 1 inner 1428.2.cc.b 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1428.2.cc.b 16 1.a even 1 1 trivial
1428.2.cc.b 16 7.c even 3 1 inner
1428.2.cc.b 16 17.c even 4 1 inner
1428.2.cc.b 16 119.n even 12 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{16} + 8 T_{5}^{15} + 32 T_{5}^{14} + 160 T_{5}^{13} + 628 T_{5}^{12} + 1264 T_{5}^{11} + \cdots + 16 \) acting on \(S_{2}^{\mathrm{new}}(1428, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{8} - T^{4} + 1)^{2} \) Copy content Toggle raw display
$5$ \( T^{16} + 8 T^{15} + \cdots + 16 \) Copy content Toggle raw display
$7$ \( (T^{8} - 12 T^{7} + \cdots + 2401)^{2} \) Copy content Toggle raw display
$11$ \( T^{16} + 8 T^{15} + \cdots + 16 \) Copy content Toggle raw display
$13$ \( (T^{4} - 4 T^{3} - 30 T^{2} + \cdots + 97)^{4} \) Copy content Toggle raw display
$17$ \( T^{16} + \cdots + 6975757441 \) Copy content Toggle raw display
$19$ \( T^{16} + \cdots + 671898241 \) Copy content Toggle raw display
$23$ \( T^{16} - 24 T^{15} + \cdots + 6250000 \) Copy content Toggle raw display
$29$ \( (T^{8} + 8 T^{7} + \cdots + 6724)^{2} \) Copy content Toggle raw display
$31$ \( T^{16} + \cdots + 104726589427201 \) Copy content Toggle raw display
$37$ \( T^{16} + \cdots + 150644120641 \) Copy content Toggle raw display
$41$ \( (T^{8} + 33168 T^{4} + 261921856)^{2} \) Copy content Toggle raw display
$43$ \( (T^{4} + 54 T^{2} + 81)^{4} \) Copy content Toggle raw display
$47$ \( (T^{8} + 8 T^{7} + \cdots + 256)^{2} \) Copy content Toggle raw display
$53$ \( T^{16} - 104 T^{14} + \cdots + 45212176 \) Copy content Toggle raw display
$59$ \( T^{16} + \cdots + 87578116096 \) Copy content Toggle raw display
$61$ \( T^{16} + \cdots + 644513529856 \) Copy content Toggle raw display
$67$ \( (T^{8} - 12 T^{7} + \cdots + 289)^{2} \) Copy content Toggle raw display
$71$ \( (T^{8} + 16 T^{7} + \cdots + 18496)^{2} \) Copy content Toggle raw display
$73$ \( T^{16} - 8 T^{15} + \cdots + 5764801 \) Copy content Toggle raw display
$79$ \( T^{16} + \cdots + 110841719041 \) Copy content Toggle raw display
$83$ \( (T^{8} + 400 T^{6} + \cdots + 614656)^{2} \) Copy content Toggle raw display
$89$ \( (T^{8} + 80 T^{6} + \cdots + 200704)^{2} \) Copy content Toggle raw display
$97$ \( (T^{8} + 56 T^{7} + \cdots + 2155024)^{2} \) Copy content Toggle raw display
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