Properties

Label 1792.4.a.v
Level $1792$
Weight $4$
Character orbit 1792.a
Self dual yes
Analytic conductor $105.731$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1792,4,Mod(1,1792)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1792, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0, 0]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1792.1");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1792 = 2^{8} \cdot 7 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 1792.a (trivial)

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: yes
Analytic conductor: \(105.731422730\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: \(\mathbb{Q}[x]/(x^{8} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - 58x^{6} + 873x^{4} - 3904x^{2} + 512 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{16} \)
Twist minimal: no (minimal twist has level 896)
Fricke sign: \(1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-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 \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{4} q^{3} + \beta_{2} q^{5} - 7 q^{7} + ( - \beta_{3} + 7) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{4} q^{3} + \beta_{2} q^{5} - 7 q^{7} + ( - \beta_{3} + 7) q^{9} + (\beta_{7} + 2 \beta_1) q^{11} + (2 \beta_{7} + 3 \beta_{4} + \cdots + \beta_1) q^{13}+ \cdots + ( - 3 \beta_{7} + 38 \beta_{4} + \cdots + 56 \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 56 q^{7} + 56 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 56 q^{7} + 56 q^{9} + 16 q^{15} - 144 q^{17} + 368 q^{23} - 312 q^{25} + 224 q^{31} - 384 q^{33} + 400 q^{39} - 368 q^{41} + 1280 q^{47} + 392 q^{49} + 224 q^{55} - 1264 q^{57} - 392 q^{63} - 784 q^{65} + 256 q^{71} + 3024 q^{73} + 1856 q^{79} + 1048 q^{81} + 4128 q^{87} - 16 q^{89} - 48 q^{95} + 144 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} - 58x^{6} + 873x^{4} - 3904x^{2} + 512 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -\nu^{7} - 22\nu^{5} + 3303\nu^{3} - 39680\nu ) / 1696 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 9\nu^{7} - 650\nu^{5} + 13521\nu^{3} - 75360\nu ) / 3392 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -13\nu^{6} + 562\nu^{4} - 2005\nu^{2} - 19760 ) / 424 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 33\nu^{7} - 1818\nu^{5} + 24137\nu^{3} - 86368\nu ) / 3392 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 11\nu^{6} - 606\nu^{4} + 6915\nu^{2} - 6176 ) / 212 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 3\nu^{6} - 146\nu^{4} + 1327\nu^{2} - 1376 ) / 53 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -25\nu^{7} + 1146\nu^{5} - 7313\nu^{3} - 15104\nu ) / 1696 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{7} + 2\beta_{4} - 2\beta_{2} - \beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 2\beta_{6} - \beta_{5} + 2\beta_{3} + 116 ) / 8 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 29\beta_{7} + 66\beta_{4} - 82\beta_{2} - 5\beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 80\beta_{6} - 53\beta_{5} + 58\beta_{3} + 3236 ) / 8 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 969\beta_{7} + 2346\beta_{4} - 3194\beta_{2} + 111\beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 3150\beta_{6} - 2137\beta_{5} + 1938\beta_{3} + 109844 ) / 8 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 34789\beta_{7} + 87026\beta_{4} - 121218\beta_{2} + 7155\beta_1 ) / 8 \) Copy content Toggle raw display

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
0.367693
−2.91484
−6.12162
3.44880
−3.44880
6.12162
2.91484
−0.367693
0 −9.01216 0 −7.97216 0 −7.00000 0 54.2189 0
1.2 0 −6.62600 0 1.61841 0 −7.00000 0 16.9039 0
1.3 0 −3.15500 0 14.1596 0 −7.00000 0 −17.0460 0
1.4 0 −0.960829 0 8.79386 0 −7.00000 0 −26.0768 0
1.5 0 0.960829 0 −8.79386 0 −7.00000 0 −26.0768 0
1.6 0 3.15500 0 −14.1596 0 −7.00000 0 −17.0460 0
1.7 0 6.62600 0 −1.61841 0 −7.00000 0 16.9039 0
1.8 0 9.01216 0 7.97216 0 −7.00000 0 54.2189 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1.8
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(1\)
\(7\) \(1\)

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 1792.4.a.v 8
4.b odd 2 1 1792.4.a.x 8
8.b even 2 1 inner 1792.4.a.v 8
8.d odd 2 1 1792.4.a.x 8
16.e even 4 2 896.4.b.c yes 8
16.f odd 4 2 896.4.b.a 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
896.4.b.a 8 16.f odd 4 2
896.4.b.c yes 8 16.e even 4 2
1792.4.a.v 8 1.a even 1 1 trivial
1792.4.a.v 8 8.b even 2 1 inner
1792.4.a.x 8 4.b odd 2 1
1792.4.a.x 8 8.d odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(\Gamma_0(1792))\):

\( T_{3}^{8} - 136T_{3}^{6} + 4936T_{3}^{4} - 39936T_{3}^{2} + 32768 \) Copy content Toggle raw display
\( T_{5}^{8} - 344T_{5}^{6} + 34056T_{5}^{4} - 1072256T_{5}^{2} + 2580992 \) Copy content Toggle raw display
\( T_{23}^{4} - 184T_{23}^{3} - 13048T_{23}^{2} + 1666176T_{23} + 92570112 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( T^{8} - 136 T^{6} + \cdots + 32768 \) Copy content Toggle raw display
$5$ \( T^{8} - 344 T^{6} + \cdots + 2580992 \) Copy content Toggle raw display
$7$ \( (T + 7)^{8} \) Copy content Toggle raw display
$11$ \( T^{8} + \cdots + 176294469632 \) Copy content Toggle raw display
$13$ \( T^{8} + \cdots + 7851321287168 \) Copy content Toggle raw display
$17$ \( (T^{4} + 72 T^{3} + \cdots + 6110608)^{2} \) Copy content Toggle raw display
$19$ \( T^{8} + \cdots + 98200806760448 \) Copy content Toggle raw display
$23$ \( (T^{4} - 184 T^{3} + \cdots + 92570112)^{2} \) Copy content Toggle raw display
$29$ \( T^{8} + \cdots + 10\!\cdots\!72 \) Copy content Toggle raw display
$31$ \( (T^{4} - 112 T^{3} + \cdots - 83968)^{2} \) Copy content Toggle raw display
$37$ \( T^{8} + \cdots + 24\!\cdots\!72 \) Copy content Toggle raw display
$41$ \( (T^{4} + 184 T^{3} + \cdots - 93253104)^{2} \) Copy content Toggle raw display
$43$ \( T^{8} + \cdots + 93\!\cdots\!28 \) Copy content Toggle raw display
$47$ \( (T^{4} - 640 T^{3} + \cdots + 15493566464)^{2} \) Copy content Toggle raw display
$53$ \( T^{8} + \cdots + 97\!\cdots\!68 \) Copy content Toggle raw display
$59$ \( T^{8} + \cdots + 82\!\cdots\!12 \) Copy content Toggle raw display
$61$ \( T^{8} + \cdots + 50\!\cdots\!12 \) Copy content Toggle raw display
$67$ \( T^{8} + \cdots + 17\!\cdots\!08 \) Copy content Toggle raw display
$71$ \( (T^{4} - 128 T^{3} + \cdots + 56776476672)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} - 1512 T^{3} + \cdots - 322329535344)^{2} \) Copy content Toggle raw display
$79$ \( (T^{4} - 928 T^{3} + \cdots + 2198996992)^{2} \) Copy content Toggle raw display
$83$ \( T^{8} + \cdots + 12\!\cdots\!28 \) Copy content Toggle raw display
$89$ \( (T^{4} + 8 T^{3} + \cdots - 49467394928)^{2} \) Copy content Toggle raw display
$97$ \( (T^{4} - 72 T^{3} + \cdots + 73503910544)^{2} \) Copy content Toggle raw display
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