Properties

Label 864.3.h.f
Level $864$
Weight $3$
Character orbit 864.h
Analytic conductor $23.542$
Analytic rank $0$
Dimension $8$
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] = [864,3,Mod(593,864)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(864, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 1, 1]))
 
N = Newforms(chi, 3, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("864.593");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 864 = 2^{5} \cdot 3^{3} \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 864.h (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: \(23.5422948407\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.629407744.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - 2x^{6} + 2x^{4} - 8x^{2} + 16 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{17}]\)
Coefficient ring index: \( 2^{6}\cdot 3^{2} \)
Twist minimal: no (minimal twist has level 216)
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 \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (2 \beta_{3} - \beta_{2}) q^{5} + ( - \beta_{5} + 6) q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + (2 \beta_{3} - \beta_{2}) q^{5} + ( - \beta_{5} + 6) q^{7} + ( - 5 \beta_{3} - 4 \beta_{2}) q^{11} + (7 \beta_{6} + \beta_{4}) q^{13} + ( - \beta_{7} + 3 \beta_1) q^{17} + ( - 2 \beta_{6} - 7 \beta_{4}) q^{19} + ( - 4 \beta_{7} - \beta_1) q^{23} + (14 \beta_{5} + 17) q^{25} + (2 \beta_{3} - 2 \beta_{2}) q^{29} + ( - 6 \beta_{5} - 26) q^{31} + (5 \beta_{3} - 6 \beta_{2}) q^{35} + (\beta_{6} + 5 \beta_{4}) q^{37} - 2 \beta_1 q^{41} + ( - 10 \beta_{6} + 6 \beta_{4}) q^{43} + (2 \beta_{7} + 13 \beta_1) q^{47} + ( - 12 \beta_{5} - 6) q^{49} + (2 \beta_{3} - 20 \beta_{2}) q^{53} + ( - 22 \beta_{5} - 14) q^{55} + (7 \beta_{3} - 12 \beta_{2}) q^{59} + ( - 3 \beta_{6} + 19 \beta_{4}) q^{61} + ( - 19 \beta_{7} + 23 \beta_1) q^{65} + ( - 36 \beta_{6} - 17 \beta_{4}) q^{67} + ( - 12 \beta_{7} - 6 \beta_1) q^{71} + (20 \beta_{5} - 41) q^{73} + ( - 32 \beta_{3} - 37 \beta_{2}) q^{77} + (5 \beta_{5} + 24) q^{79} + ( - 2 \beta_{3} - 30 \beta_{2}) q^{83} + (22 \beta_{6} - 16 \beta_{4}) q^{85} + (\beta_{7} - 39 \beta_1) q^{89} + (38 \beta_{6} + 21 \beta_{4}) q^{91} + ( - 8 \beta_{7} + 27 \beta_1) q^{95} + ( - 2 \beta_{5} - 9) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 48 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 48 q^{7} + 136 q^{25} - 208 q^{31} - 48 q^{49} - 112 q^{55} - 328 q^{73} + 192 q^{79} - 72 q^{97}+O(q^{100}) \) Copy content Toggle raw display

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

\(\beta_{1}\)\(=\) \( ( -\nu^{5} + 2\nu ) / 2 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{7} - 4\nu^{5} + 10\nu^{3} - 28\nu ) / 12 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -\nu^{7} + \nu^{5} + 2\nu^{3} + 10\nu ) / 6 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( \nu^{6} + 2\nu^{4} - 2\nu^{2} - 4 ) / 4 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{6} + 2\nu^{4} + 2\nu^{2} + 4 ) / 4 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -5\nu^{6} + 2\nu^{4} - 14\nu^{2} + 32 ) / 12 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 3\nu^{7} - 2\nu^{5} + 6\nu^{3} - 8\nu ) / 4 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{7} + 3\beta_{3} - 3\beta_{2} + 2\beta_1 ) / 12 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( -3\beta_{6} + 3\beta_{5} - 2\beta_{4} + 3 ) / 6 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( \beta_{7} + 6\beta_{3} + 3\beta_{2} - \beta_1 ) / 6 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( \beta_{5} + \beta_{4} \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( \beta_{7} + 3\beta_{3} - 3\beta_{2} - 10\beta_1 ) / 6 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -3\beta_{6} - 3\beta_{5} + 4\beta_{4} + 15 ) / 3 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 4\beta_{7} - 3\beta_{3} - 6\beta_{2} - \beta_1 ) / 3 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/864\mathbb{Z}\right)^\times\).

\(n\) \(325\) \(353\) \(703\)
\(\chi(n)\) \(-1\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
593.1
−1.38255 0.297594i
−1.38255 + 0.297594i
−0.767178 1.18804i
−0.767178 + 1.18804i
0.767178 + 1.18804i
0.767178 1.18804i
1.38255 + 0.297594i
1.38255 0.297594i
0 0 0 −8.89047 0 3.35425 0 0 0
593.2 0 0 0 −8.89047 0 3.35425 0 0 0
593.3 0 0 0 −2.22699 0 8.64575 0 0 0
593.4 0 0 0 −2.22699 0 8.64575 0 0 0
593.5 0 0 0 2.22699 0 8.64575 0 0 0
593.6 0 0 0 2.22699 0 8.64575 0 0 0
593.7 0 0 0 8.89047 0 3.35425 0 0 0
593.8 0 0 0 8.89047 0 3.35425 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 593.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
8.b even 2 1 inner
24.h odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 864.3.h.f 8
3.b odd 2 1 inner 864.3.h.f 8
4.b odd 2 1 216.3.h.e 8
8.b even 2 1 inner 864.3.h.f 8
8.d odd 2 1 216.3.h.e 8
12.b even 2 1 216.3.h.e 8
24.f even 2 1 216.3.h.e 8
24.h odd 2 1 inner 864.3.h.f 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
216.3.h.e 8 4.b odd 2 1
216.3.h.e 8 8.d odd 2 1
216.3.h.e 8 12.b even 2 1
216.3.h.e 8 24.f even 2 1
864.3.h.f 8 1.a even 1 1 trivial
864.3.h.f 8 3.b odd 2 1 inner
864.3.h.f 8 8.b even 2 1 inner
864.3.h.f 8 24.h odd 2 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{4} - 84T_{5}^{2} + 392 \) acting on \(S_{3}^{\mathrm{new}}(864, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( T^{8} \) Copy content Toggle raw display
$5$ \( (T^{4} - 84 T^{2} + 392)^{2} \) Copy content Toggle raw display
$7$ \( (T^{2} - 12 T + 29)^{4} \) Copy content Toggle raw display
$11$ \( (T^{4} - 460 T^{2} + 25992)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + 718 T^{2} + 106929)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 236 T^{2} + 5832)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} + 778 T^{2} + 110889)^{2} \) Copy content Toggle raw display
$23$ \( (T^{4} + 1748 T^{2} + 763848)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} - 160 T^{2} + 4608)^{2} \) Copy content Toggle raw display
$31$ \( (T^{2} + 52 T + 424)^{4} \) Copy content Toggle raw display
$37$ \( (T^{4} + 406 T^{2} + 35721)^{2} \) Copy content Toggle raw display
$41$ \( (T^{4} + 80 T^{2} + 1152)^{2} \) Copy content Toggle raw display
$43$ \( (T^{4} + 2968 T^{2} + 7056)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} + 4212 T^{2} + 622728)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} - 8368 T^{2} + 14709888)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} - 4140 T^{2} + 4135688)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + 7326 T^{2} + 12510369)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} + 18594 T^{2} + 78269409)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + 16848 T^{2} + 68024448)^{2} \) Copy content Toggle raw display
$73$ \( (T^{2} + 82 T - 1119)^{4} \) Copy content Toggle raw display
$79$ \( (T^{2} - 48 T + 401)^{4} \) Copy content Toggle raw display
$83$ \( (T^{4} - 17568 T^{2} + 48255488)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} + 29900 T^{2} + 182710728)^{2} \) Copy content Toggle raw display
$97$ \( (T^{2} + 18 T + 53)^{4} \) Copy content Toggle raw display
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