Properties

Label 448.2.j.d
Level $448$
Weight $2$
Character orbit 448.j
Analytic conductor $3.577$
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] = [448,2,Mod(111,448)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(448, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([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("448.111");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 448 = 2^{6} \cdot 7 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 448.j (of order \(4\), 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: \(3.57729801055\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(8\) over \(\Q(i)\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 4x^{14} + 6x^{12} - 12x^{10} + 33x^{8} - 48x^{6} + 96x^{4} - 256x^{2} + 256 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{12}\cdot 3^{2} \)
Twist minimal: no (minimal twist has level 112)
Sato-Tate group: $\mathrm{SU}(2)[C_{4}]$

$q$-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.

\(f(q)\) \(=\) \( q - \beta_{6} q^{3} + \beta_{5} q^{5} + (\beta_{13} - 1) q^{7} + (\beta_{15} - 3 \beta_{8} + \cdots + \beta_1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{6} q^{3} + \beta_{5} q^{5} + (\beta_{13} - 1) q^{7} + (\beta_{15} - 3 \beta_{8} + \cdots + \beta_1) q^{9}+ \cdots + (4 \beta_{15} - 6 \beta_{8} - 2 \beta_{7} + \cdots - 6) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 8 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 8 q^{7} + 32 q^{11} + 16 q^{21} - 8 q^{35} - 16 q^{39} - 16 q^{49} + 32 q^{51} - 80 q^{65} + 48 q^{67} - 32 q^{71} - 16 q^{77} + 32 q^{81} + 64 q^{85} - 8 q^{91} - 64 q^{93} - 64 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 4x^{14} + 6x^{12} - 12x^{10} + 33x^{8} - 48x^{6} + 96x^{4} - 256x^{2} + 256 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{14} + 84\nu^{12} - 42\nu^{10} + 132\nu^{8} - 351\nu^{6} - 216\nu^{4} + 528\nu^{2} + 2048 ) / 1920 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -13\nu^{15} + 48\nu^{13} - 14\nu^{11} + 4\nu^{9} - 477\nu^{7} + 428\nu^{5} - 1904\nu^{3} + 5696\nu ) / 2560 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -13\nu^{15} + 88\nu^{13} - 14\nu^{11} + 244\nu^{9} - 637\nu^{7} + 468\nu^{5} - 1744\nu^{3} + 4416\nu ) / 1280 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -13\nu^{14} - 12\nu^{12} + 66\nu^{10} - 36\nu^{8} + 243\nu^{6} - 912\nu^{4} + 1776\nu^{2} - 1664 ) / 1920 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -47\nu^{15} + 112\nu^{13} - 26\nu^{11} + 236\nu^{9} - 543\nu^{7} - 188\nu^{5} - 2576\nu^{3} + 4544\nu ) / 2560 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -53\nu^{15} + 88\nu^{13} - 94\nu^{11} + 404\nu^{9} - 997\nu^{7} + 948\nu^{5} - 4144\nu^{3} + 3776\nu ) / 2560 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -\nu^{14} + 2\nu^{12} + 2\nu^{10} - 9\nu^{6} + 14\nu^{4} - 64\nu^{2} + 96 ) / 64 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( -43\nu^{14} + 108\nu^{12} - 114\nu^{10} + 324\nu^{8} - 747\nu^{6} + 528\nu^{4} - 3024\nu^{2} + 6016 ) / 1920 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( -127\nu^{15} + 312\nu^{13} - 346\nu^{11} + 1116\nu^{9} - 2383\nu^{7} + 2252\nu^{5} - 8656\nu^{3} + 17984\nu ) / 2560 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( -71\nu^{14} + 216\nu^{12} - 138\nu^{10} + 828\nu^{8} - 2199\nu^{6} + 1356\nu^{4} - 5328\nu^{2} + 12992 ) / 1920 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( - 13 \nu^{15} - 90 \nu^{14} + 48 \nu^{13} + 240 \nu^{12} - 14 \nu^{11} - 220 \nu^{10} + 4 \nu^{9} + \cdots + 14720 ) / 2560 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( 59\nu^{15} - 104\nu^{13} + 82\nu^{11} - 492\nu^{9} + 811\nu^{7} - 844\nu^{5} + 3872\nu^{3} - 6528\nu ) / 640 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( - 15 \nu^{15} - 18 \nu^{14} + 32 \nu^{13} + 48 \nu^{12} - 26 \nu^{11} - 44 \nu^{10} + 140 \nu^{9} + \cdots + 2944 ) / 512 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 7\nu^{14} - 16\nu^{12} + 10\nu^{10} - 76\nu^{8} + 119\nu^{6} - 68\nu^{4} + 560\nu^{2} - 960 ) / 128 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 34\nu^{14} - 69\nu^{12} + 72\nu^{10} - 342\nu^{8} + 606\nu^{6} - 669\nu^{4} + 2472\nu^{2} - 4048 ) / 480 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{15} + 2\beta_{13} - \beta_{12} - 6\beta_{6} - 2\beta_{5} - \beta_{3} + 4\beta_{2} - \beta _1 - 2 ) / 12 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( -\beta_{15} + \beta_{14} - \beta_{8} + \beta_{4} + \beta _1 + 2 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 7 \beta_{15} + 2 \beta_{13} - \beta_{12} + 12 \beta_{11} - 6 \beta_{6} - 2 \beta_{5} - \beta_{3} + \cdots - 14 ) / 12 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -3\beta_{15} + 2\beta_{14} - \beta_{10} - 4\beta_{8} + 2\beta_{7} - \beta_{4} + 2\beta _1 + 3 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( - 5 \beta_{15} - 22 \beta_{13} - 7 \beta_{12} + 12 \beta_{11} + 6 \beta_{6} - 14 \beta_{5} + 5 \beta_{3} + \cdots + 10 ) / 12 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -3\beta_{15} - \beta_{14} - 6\beta_{10} - 3\beta_{8} + 2\beta_{7} - \beta_{4} + 5\beta _1 + 8 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( - 29 \beta_{15} - 34 \beta_{13} - 13 \beta_{12} - 24 \beta_{11} + 12 \beta_{9} - 42 \beta_{6} + \cdots + 58 ) / 12 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( -5\beta_{15} - 4\beta_{14} - 3\beta_{10} - 18\beta_{8} - 4\beta_{7} + \beta_{4} + 6\beta _1 + 5 ) / 2 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( 7 \beta_{15} + 38 \beta_{13} - 19 \beta_{12} - 24 \beta_{11} - 12 \beta_{9} - 54 \beta_{6} - 50 \beta_{5} + \cdots - 14 ) / 12 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( -\beta_{15} - 7\beta_{14} + 4\beta_{10} - 41\beta_{8} + 20\beta_{7} + \beta_{4} + 5\beta _1 + 6 ) / 2 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 31 \beta_{15} - 22 \beta_{13} - 73 \beta_{12} + 84 \beta_{11} - 168 \beta_{9} + 18 \beta_{6} + \cdots - 62 ) / 12 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( -7\beta_{15} - 2\beta_{14} - 21\beta_{10} - 8\beta_{8} + 30\beta_{7} - 13\beta_{4} + 58\beta _1 - 25 ) / 2 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( - 149 \beta_{15} - 286 \beta_{13} + 41 \beta_{12} - 12 \beta_{11} + 120 \beta_{9} - 18 \beta_{6} + \cdots + 298 ) / 12 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( 33\beta_{15} - 45\beta_{14} + 6\beta_{10} - 63\beta_{8} - 18\beta_{7} - 93\beta_{4} + 45\beta _1 - 4 ) / 2 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( - 269 \beta_{15} + 86 \beta_{13} + 179 \beta_{12} - 624 \beta_{11} + 180 \beta_{9} - 114 \beta_{6} + \cdots + 538 ) / 12 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/448\mathbb{Z}\right)^\times\).

\(n\) \(127\) \(129\) \(197\)
\(\chi(n)\) \(-1\) \(-1\) \(\beta_{8}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
111.1
−1.40927 0.118126i
0.517174 1.31626i
−0.944649 1.05244i
−1.36166 0.381939i
1.36166 + 0.381939i
0.944649 + 1.05244i
−0.517174 + 1.31626i
1.40927 + 0.118126i
−1.40927 + 0.118126i
0.517174 + 1.31626i
−0.944649 + 1.05244i
−1.36166 + 0.381939i
1.36166 0.381939i
0.944649 1.05244i
−0.517174 1.31626i
1.40927 0.118126i
0 −2.23450 2.23450i 0 0.584038 + 0.584038i 0 1.82596 + 1.91465i 0 6.98602i 0
111.2 0 −1.50619 1.50619i 0 −2.54054 2.54054i 0 −2.59286 + 0.526369i 0 1.53721i 0
111.3 0 −1.28999 1.28999i 0 0.599312 + 0.599312i 0 0.152445 2.64136i 0 0.328129i 0
111.4 0 −1.03649 1.03649i 0 1.68683 + 1.68683i 0 −1.38554 + 2.25395i 0 0.851361i 0
111.5 0 1.03649 + 1.03649i 0 −1.68683 1.68683i 0 −1.38554 2.25395i 0 0.851361i 0
111.6 0 1.28999 + 1.28999i 0 −0.599312 0.599312i 0 0.152445 + 2.64136i 0 0.328129i 0
111.7 0 1.50619 + 1.50619i 0 2.54054 + 2.54054i 0 −2.59286 0.526369i 0 1.53721i 0
111.8 0 2.23450 + 2.23450i 0 −0.584038 0.584038i 0 1.82596 1.91465i 0 6.98602i 0
335.1 0 −2.23450 + 2.23450i 0 0.584038 0.584038i 0 1.82596 1.91465i 0 6.98602i 0
335.2 0 −1.50619 + 1.50619i 0 −2.54054 + 2.54054i 0 −2.59286 0.526369i 0 1.53721i 0
335.3 0 −1.28999 + 1.28999i 0 0.599312 0.599312i 0 0.152445 + 2.64136i 0 0.328129i 0
335.4 0 −1.03649 + 1.03649i 0 1.68683 1.68683i 0 −1.38554 2.25395i 0 0.851361i 0
335.5 0 1.03649 1.03649i 0 −1.68683 + 1.68683i 0 −1.38554 + 2.25395i 0 0.851361i 0
335.6 0 1.28999 1.28999i 0 −0.599312 + 0.599312i 0 0.152445 2.64136i 0 0.328129i 0
335.7 0 1.50619 1.50619i 0 2.54054 2.54054i 0 −2.59286 + 0.526369i 0 1.53721i 0
335.8 0 2.23450 2.23450i 0 −0.584038 + 0.584038i 0 1.82596 + 1.91465i 0 6.98602i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 111.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.b odd 2 1 inner
16.f odd 4 1 inner
112.j even 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 448.2.j.d 16
4.b odd 2 1 112.2.j.d 16
7.b odd 2 1 inner 448.2.j.d 16
8.b even 2 1 896.2.j.g 16
8.d odd 2 1 896.2.j.h 16
16.e even 4 1 112.2.j.d 16
16.e even 4 1 896.2.j.h 16
16.f odd 4 1 inner 448.2.j.d 16
16.f odd 4 1 896.2.j.g 16
28.d even 2 1 112.2.j.d 16
28.f even 6 2 784.2.w.e 32
28.g odd 6 2 784.2.w.e 32
56.e even 2 1 896.2.j.h 16
56.h odd 2 1 896.2.j.g 16
112.j even 4 1 inner 448.2.j.d 16
112.j even 4 1 896.2.j.g 16
112.l odd 4 1 112.2.j.d 16
112.l odd 4 1 896.2.j.h 16
112.w even 12 2 784.2.w.e 32
112.x odd 12 2 784.2.w.e 32
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
112.2.j.d 16 4.b odd 2 1
112.2.j.d 16 16.e even 4 1
112.2.j.d 16 28.d even 2 1
112.2.j.d 16 112.l odd 4 1
448.2.j.d 16 1.a even 1 1 trivial
448.2.j.d 16 7.b odd 2 1 inner
448.2.j.d 16 16.f odd 4 1 inner
448.2.j.d 16 112.j even 4 1 inner
784.2.w.e 32 28.f even 6 2
784.2.w.e 32 28.g odd 6 2
784.2.w.e 32 112.w even 12 2
784.2.w.e 32 112.x odd 12 2
896.2.j.g 16 8.b even 2 1
896.2.j.g 16 16.f odd 4 1
896.2.j.g 16 56.h odd 2 1
896.2.j.g 16 112.j even 4 1
896.2.j.h 16 8.d odd 2 1
896.2.j.h 16 16.e even 4 1
896.2.j.h 16 56.e even 2 1
896.2.j.h 16 112.l odd 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(448, [\chi])\):

\( T_{3}^{16} + 136T_{3}^{12} + 3992T_{3}^{8} + 38368T_{3}^{4} + 104976 \) Copy content Toggle raw display
\( T_{5}^{16} + 200T_{5}^{12} + 5592T_{5}^{8} + 5344T_{5}^{4} + 1296 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( T^{16} + 136 T^{12} + \cdots + 104976 \) Copy content Toggle raw display
$5$ \( T^{16} + 200 T^{12} + \cdots + 1296 \) Copy content Toggle raw display
$7$ \( (T^{8} + 4 T^{7} + \cdots + 2401)^{2} \) Copy content Toggle raw display
$11$ \( (T^{2} - 4 T + 8)^{8} \) Copy content Toggle raw display
$13$ \( T^{16} + 2440 T^{12} + \cdots + 18974736 \) Copy content Toggle raw display
$17$ \( (T^{8} + 88 T^{6} + \cdots + 14400)^{2} \) Copy content Toggle raw display
$19$ \( T^{16} + 968 T^{12} + \cdots + 1296 \) Copy content Toggle raw display
$23$ \( (T^{4} - 16 T^{2} + 16 T + 4)^{4} \) Copy content Toggle raw display
$29$ \( (T^{8} + 128 T^{5} + \cdots + 1296)^{2} \) Copy content Toggle raw display
$31$ \( (T^{8} - 120 T^{6} + \cdots + 166464)^{2} \) Copy content Toggle raw display
$37$ \( (T^{8} - 64 T^{5} + \cdots + 400)^{2} \) Copy content Toggle raw display
$41$ \( (T^{8} - 216 T^{6} + \cdots + 419904)^{2} \) Copy content Toggle raw display
$43$ \( (T^{8} - 64 T^{5} + \cdots + 256)^{2} \) Copy content Toggle raw display
$47$ \( (T^{8} - 312 T^{6} + \cdots + 3968064)^{2} \) Copy content Toggle raw display
$53$ \( (T^{8} - 128 T^{5} + \cdots + 1948816)^{2} \) Copy content Toggle raw display
$59$ \( T^{16} + \cdots + 506250000 \) Copy content Toggle raw display
$61$ \( T^{16} + \cdots + 56528804622096 \) Copy content Toggle raw display
$67$ \( (T^{8} - 24 T^{7} + \cdots + 256)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + 8 T^{3} + \cdots - 1728)^{4} \) Copy content Toggle raw display
$73$ \( (T^{8} - 96 T^{6} + \cdots + 9216)^{2} \) Copy content Toggle raw display
$79$ \( (T^{8} + 384 T^{6} + \cdots + 36192256)^{2} \) Copy content Toggle raw display
$83$ \( T^{16} + \cdots + 57524882954256 \) Copy content Toggle raw display
$89$ \( (T^{8} - 512 T^{6} + \cdots + 5308416)^{2} \) Copy content Toggle raw display
$97$ \( (T^{8} + 312 T^{6} + \cdots + 1742400)^{2} \) Copy content Toggle raw display
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