Properties

Label 1248.2.g.b
Level $1248$
Weight $2$
Character orbit 1248.g
Analytic conductor $9.965$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $2$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1248,2,Mod(625,1248)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1248, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 1, 0, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1248.625");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1248 = 2^{5} \cdot 3 \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1248.g (of order \(2\), degree \(1\), 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: \(9.96533017226\)
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: \( x^{16} - 2 x^{15} + 2 x^{14} - 4 x^{13} + 9 x^{12} - 10 x^{11} + 2 x^{10} - 8 x^{9} + 28 x^{8} + \cdots + 256 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{19}]\)
Coefficient ring index: \( 2^{20} \)
Twist minimal: no (minimal twist has level 312)
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.

\(f(q)\) \(=\) \( q + \beta_{6} q^{3} + \beta_{12} q^{5} - \beta_{5} q^{7} - q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{6} q^{3} + \beta_{12} q^{5} - \beta_{5} q^{7} - q^{9} + \beta_{10} q^{11} + \beta_{6} q^{13} + \beta_{3} q^{15} + ( - \beta_{2} + 1) q^{17} + (\beta_{6} - \beta_1) q^{19} - \beta_{9} q^{21} + ( - \beta_{8} - \beta_{5} - \beta_{3} + 1) q^{23} + (\beta_{11} + \beta_{4} - \beta_{3} + \cdots - 2) q^{25}+ \cdots - \beta_{10} q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 4 q^{7} - 16 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 4 q^{7} - 16 q^{9} + 4 q^{15} + 16 q^{17} + 8 q^{23} - 32 q^{25} + 4 q^{31} - 16 q^{39} - 36 q^{41} - 24 q^{47} + 48 q^{49} - 24 q^{55} - 12 q^{57} + 4 q^{63} + 4 q^{65} - 32 q^{73} + 16 q^{81} - 8 q^{87} - 60 q^{89} + 24 q^{95} + 40 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 2 x^{15} + 2 x^{14} - 4 x^{13} + 9 x^{12} - 10 x^{11} + 2 x^{10} - 8 x^{9} + 28 x^{8} + \cdots + 256 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( - 6 \nu^{15} + 23 \nu^{14} - 18 \nu^{13} + 50 \nu^{12} - 50 \nu^{11} + 7 \nu^{10} - 26 \nu^{9} + \cdots + 384 ) / 448 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{15} - 8 \nu^{14} + 2 \nu^{13} + 25 \nu^{11} - 16 \nu^{10} - 14 \nu^{9} - 4 \nu^{8} + 68 \nu^{7} + \cdots - 448 ) / 64 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( - 3 \nu^{15} + 10 \nu^{14} - 2 \nu^{13} + 12 \nu^{12} - 51 \nu^{11} + 18 \nu^{10} + 30 \nu^{9} + \cdots + 1280 ) / 128 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( - 5 \nu^{15} + 22 \nu^{14} - 6 \nu^{13} + 20 \nu^{12} - 117 \nu^{11} + 46 \nu^{10} + 58 \nu^{9} + \cdots + 2816 ) / 128 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 3 \nu^{15} - 8 \nu^{14} + 2 \nu^{13} - 8 \nu^{12} + 43 \nu^{11} - 16 \nu^{10} - 30 \nu^{9} + \cdots - 1024 ) / 64 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( - 25 \nu^{15} + 13 \nu^{14} + 16 \nu^{13} + 94 \nu^{12} - 101 \nu^{11} - 91 \nu^{10} - 8 \nu^{9} + \cdots + 256 ) / 448 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 39 \nu^{15} - 34 \nu^{14} - 2 \nu^{13} - 164 \nu^{12} + 199 \nu^{11} + 70 \nu^{10} + 78 \nu^{9} + \cdots - 1152 ) / 448 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 13 \nu^{15} - 38 \nu^{14} + 6 \nu^{13} - 20 \nu^{12} + 157 \nu^{11} - 62 \nu^{10} - 122 \nu^{9} + \cdots - 3456 ) / 128 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 23 \nu^{15} - 10 \nu^{14} - 8 \nu^{13} - 96 \nu^{12} + 103 \nu^{11} + 70 \nu^{10} + 32 \nu^{9} + \cdots - 1472 ) / 224 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 107 \nu^{15} - 38 \nu^{14} - 134 \nu^{13} - 404 \nu^{12} + 411 \nu^{11} + 434 \nu^{10} - 38 \nu^{9} + \cdots - 1024 ) / 896 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( - 4 \nu^{15} + 13 \nu^{14} - 4 \nu^{13} + 10 \nu^{12} - 56 \nu^{11} + 29 \nu^{10} + 28 \nu^{9} + \cdots + 1280 ) / 32 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( - 117 \nu^{15} + 74 \nu^{14} + 34 \nu^{13} + 492 \nu^{12} - 485 \nu^{11} - 350 \nu^{10} - 94 \nu^{9} + \cdots + 2560 ) / 896 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( 7 \nu^{15} - 23 \nu^{14} + 2 \nu^{13} - 14 \nu^{12} + 107 \nu^{11} - 39 \nu^{10} - 78 \nu^{9} + \cdots - 2464 ) / 32 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 199 \nu^{15} - 64 \nu^{14} - 194 \nu^{13} - 816 \nu^{12} + 767 \nu^{11} + 952 \nu^{10} + 174 \nu^{9} + \cdots - 1536 ) / 896 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( - 104 \nu^{15} + 65 \nu^{14} + 66 \nu^{13} + 470 \nu^{12} - 428 \nu^{11} - 399 \nu^{10} - 166 \nu^{9} + \cdots + 384 ) / 448 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( -\beta_{14} + \beta_{11} + \beta_{10} + \beta_{9} + \beta_{8} + \beta_{7} + \beta_{6} - \beta_{5} - \beta_{4} + 1 ) / 8 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{15} - \beta_{12} + \beta_{10} - \beta_{5} - \beta_{4} + \beta_{3} - \beta_1 ) / 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( - \beta_{14} + \beta_{11} + \beta_{10} + 3 \beta_{9} - \beta_{8} - \beta_{7} + \beta_{6} + 3 \beta_{5} + \cdots + 3 ) / 8 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( - \beta_{14} + \beta_{13} - 3 \beta_{12} + \beta_{11} - \beta_{8} + \beta_{7} + 3 \beta_{6} - \beta_{5} + \cdots - 3 ) / 4 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( - 3 \beta_{14} - 4 \beta_{12} - \beta_{11} - \beta_{10} - \beta_{9} - \beta_{8} - 5 \beta_{7} + \cdots - 1 ) / 8 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( \beta_{15} + 2 \beta_{14} - \beta_{12} - \beta_{10} + 2 \beta_{9} + 8 \beta_{6} - \beta_{5} + 3 \beta_{4} + \cdots + 14 ) / 4 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( - 7 \beta_{14} + 8 \beta_{13} + 3 \beta_{11} - \beta_{10} + 9 \beta_{9} - 7 \beta_{8} + 5 \beta_{7} + \cdots + 29 ) / 8 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( 8 \beta_{15} - \beta_{14} - \beta_{13} - \beta_{12} + \beta_{11} + 6 \beta_{10} - 2 \beta_{9} + \cdots - 11 ) / 4 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( 8 \beta_{15} + 15 \beta_{14} + 28 \beta_{12} - 11 \beta_{11} - 3 \beta_{10} + 21 \beta_{9} - 11 \beta_{8} + \cdots + 5 ) / 8 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( - 5 \beta_{15} + 8 \beta_{13} + 5 \beta_{12} + 14 \beta_{11} - 21 \beta_{10} + 8 \beta_{9} - 6 \beta_{8} + \cdots - 44 ) / 4 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 16 \beta_{15} + 11 \beta_{14} - 8 \beta_{12} - 7 \beta_{11} - 27 \beta_{10} - 45 \beta_{9} - 21 \beta_{8} + \cdots + 39 ) / 8 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( - 8 \beta_{15} + 11 \beta_{14} - 11 \beta_{13} + 45 \beta_{12} - 3 \beta_{11} - 28 \beta_{10} + \cdots + 49 ) / 4 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( 32 \beta_{15} + 21 \beta_{14} + 16 \beta_{13} - 68 \beta_{12} + 39 \beta_{11} - 89 \beta_{10} + \cdots + 295 ) / 8 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( 41 \beta_{15} - 42 \beta_{14} - 8 \beta_{13} + 23 \beta_{12} + 12 \beta_{11} + 51 \beta_{10} + \cdots + 194 ) / 4 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( 192 \beta_{15} + \beta_{14} - 72 \beta_{13} - 48 \beta_{12} + 11 \beta_{11} + 199 \beta_{10} + \cdots - 315 ) / 8 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1248\mathbb{Z}\right)^\times\).

\(n\) \(703\) \(769\) \(833\) \(1093\)
\(\chi(n)\) \(1\) \(1\) \(1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
625.1
−0.879244 1.10767i
0.791485 1.17199i
0.802079 + 1.16476i
1.40722 + 0.140463i
−0.414573 + 1.35208i
−0.654116 1.25385i
1.27276 0.616518i
−1.32561 + 0.492712i
−1.32561 0.492712i
1.27276 + 0.616518i
−0.654116 + 1.25385i
−0.414573 1.35208i
1.40722 0.140463i
0.802079 1.16476i
0.791485 + 1.17199i
−0.879244 + 1.10767i
0 1.00000i 0 3.31390i 0 −4.17825 0 −1.00000 0
625.2 0 1.00000i 0 3.05343i 0 0.397397 0 −1.00000 0
625.3 0 1.00000i 0 1.47174i 0 2.93973 0 −1.00000 0
625.4 0 1.00000i 0 0.218531i 0 4.47783 0 −1.00000 0
625.5 0 1.00000i 0 0.550135i 0 −4.37841 0 −1.00000 0
625.6 0 1.00000i 0 1.87654i 0 −0.584696 0 −1.00000 0
625.7 0 1.00000i 0 3.29521i 0 −2.97802 0 −1.00000 0
625.8 0 1.00000i 0 4.33571i 0 2.30442 0 −1.00000 0
625.9 0 1.00000i 0 4.33571i 0 2.30442 0 −1.00000 0
625.10 0 1.00000i 0 3.29521i 0 −2.97802 0 −1.00000 0
625.11 0 1.00000i 0 1.87654i 0 −0.584696 0 −1.00000 0
625.12 0 1.00000i 0 0.550135i 0 −4.37841 0 −1.00000 0
625.13 0 1.00000i 0 0.218531i 0 4.47783 0 −1.00000 0
625.14 0 1.00000i 0 1.47174i 0 2.93973 0 −1.00000 0
625.15 0 1.00000i 0 3.05343i 0 0.397397 0 −1.00000 0
625.16 0 1.00000i 0 3.31390i 0 −4.17825 0 −1.00000 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 625.16
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
8.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1248.2.g.b 16
3.b odd 2 1 3744.2.g.e 16
4.b odd 2 1 312.2.g.b 16
8.b even 2 1 inner 1248.2.g.b 16
8.d odd 2 1 312.2.g.b 16
12.b even 2 1 936.2.g.e 16
16.e even 4 1 9984.2.a.bs 8
16.e even 4 1 9984.2.a.bv 8
16.f odd 4 1 9984.2.a.bt 8
16.f odd 4 1 9984.2.a.bu 8
24.f even 2 1 936.2.g.e 16
24.h odd 2 1 3744.2.g.e 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
312.2.g.b 16 4.b odd 2 1
312.2.g.b 16 8.d odd 2 1
936.2.g.e 16 12.b even 2 1
936.2.g.e 16 24.f even 2 1
1248.2.g.b 16 1.a even 1 1 trivial
1248.2.g.b 16 8.b even 2 1 inner
3744.2.g.e 16 3.b odd 2 1
3744.2.g.e 16 24.h odd 2 1
9984.2.a.bs 8 16.e even 4 1
9984.2.a.bt 8 16.f odd 4 1
9984.2.a.bu 8 16.f odd 4 1
9984.2.a.bv 8 16.e even 4 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{16} + 56 T_{5}^{14} + 1220 T_{5}^{12} + 13152 T_{5}^{10} + 73152 T_{5}^{8} + 197888 T_{5}^{6} + \cdots + 2304 \) acting on \(S_{2}^{\mathrm{new}}(1248, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{2} + 1)^{8} \) Copy content Toggle raw display
$5$ \( T^{16} + 56 T^{14} + \cdots + 2304 \) Copy content Toggle raw display
$7$ \( (T^{8} + 2 T^{7} + \cdots + 384)^{2} \) Copy content Toggle raw display
$11$ \( T^{16} + 128 T^{14} + \cdots + 1679616 \) Copy content Toggle raw display
$13$ \( (T^{2} + 1)^{8} \) Copy content Toggle raw display
$17$ \( (T^{8} - 8 T^{7} + \cdots - 64256)^{2} \) Copy content Toggle raw display
$19$ \( T^{16} + 224 T^{14} + \cdots + 22429696 \) Copy content Toggle raw display
$23$ \( (T^{8} - 4 T^{7} + \cdots - 166912)^{2} \) Copy content Toggle raw display
$29$ \( T^{16} + \cdots + 4671995904 \) Copy content Toggle raw display
$31$ \( (T^{8} - 2 T^{7} + \cdots + 110464)^{2} \) Copy content Toggle raw display
$37$ \( T^{16} + \cdots + 157351936 \) Copy content Toggle raw display
$41$ \( (T^{8} + 18 T^{7} + \cdots - 139792)^{2} \) Copy content Toggle raw display
$43$ \( T^{16} + \cdots + 561468473344 \) Copy content Toggle raw display
$47$ \( (T^{8} + 12 T^{7} + \cdots + 48)^{2} \) Copy content Toggle raw display
$53$ \( T^{16} + \cdots + 462422016 \) Copy content Toggle raw display
$59$ \( T^{16} + \cdots + 276642337024 \) Copy content Toggle raw display
$61$ \( T^{16} + \cdots + 329127100416 \) Copy content Toggle raw display
$67$ \( T^{16} + \cdots + 409763856384 \) Copy content Toggle raw display
$71$ \( (T^{8} - 408 T^{6} + \cdots + 21431088)^{2} \) Copy content Toggle raw display
$73$ \( (T^{8} + 16 T^{7} + \cdots + 3326208)^{2} \) Copy content Toggle raw display
$79$ \( (T^{8} - 336 T^{6} + \cdots + 2166016)^{2} \) Copy content Toggle raw display
$83$ \( T^{16} + \cdots + 6293836597504 \) Copy content Toggle raw display
$89$ \( (T^{8} + 30 T^{7} + \cdots + 37581936)^{2} \) Copy content Toggle raw display
$97$ \( (T^{8} - 20 T^{7} + \cdots - 637696)^{2} \) Copy content Toggle raw display
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