Properties

Label 4608.2.d.f
Level $4608$
Weight $2$
Character orbit 4608.d
Analytic conductor $36.795$
Analytic rank $0$
Dimension $4$
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] = [4608,2,Mod(2305,4608)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(4608, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 1, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("4608.2305");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 4608 = 2^{9} \cdot 3^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 4608.d (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: \(36.7950652514\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\zeta_{8})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: no (minimal twist has level 1536)
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 \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \beta_{2} + \beta_1) q^{5} + \beta_{3} q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - \beta_{2} + \beta_1) q^{5} + \beta_{3} q^{7} + ( - 2 \beta_{2} + \beta_1) q^{11} + (2 \beta_{2} + \beta_1) q^{13} + (2 \beta_{3} - 2) q^{17} + 2 \beta_{2} q^{19} + ( - 2 \beta_{3} - 4) q^{23} + (4 \beta_{3} - 1) q^{25} + (\beta_{2} - 3 \beta_1) q^{29} + 5 \beta_{3} q^{31} + (2 \beta_{2} - \beta_1) q^{35} + (4 \beta_{2} - 3 \beta_1) q^{37} + (6 \beta_{3} - 2) q^{41} + ( - 2 \beta_{2} + 2 \beta_1) q^{43} + ( - 6 \beta_{3} + 4) q^{47} - 5 q^{49} + (3 \beta_{2} + 3 \beta_1) q^{53} + (6 \beta_{3} - 8) q^{55} + (4 \beta_{2} + 2 \beta_1) q^{59} + (4 \beta_{2} + 3 \beta_1) q^{61} - 2 \beta_{3} q^{65} - 4 \beta_{2} q^{67} - 6 \beta_{3} q^{71} - 8 \beta_{3} q^{73} + (2 \beta_{2} - 2 \beta_1) q^{77} + ( - \beta_{3} + 16) q^{79} + (2 \beta_{2} - 3 \beta_1) q^{83} + (6 \beta_{2} - 4 \beta_1) q^{85} + ( - 8 \beta_{3} - 6) q^{89} + (2 \beta_{2} + 2 \beta_1) q^{91} + ( - 4 \beta_{3} + 4) q^{95} + (4 \beta_{3} - 2) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 8 q^{17} - 16 q^{23} - 4 q^{25} - 8 q^{41} + 16 q^{47} - 20 q^{49} - 32 q^{55} + 64 q^{79} - 24 q^{89} + 16 q^{95} - 8 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring

\(\beta_{1}\)\(=\) \( 2\zeta_{8}^{2} \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \zeta_{8}^{3} + \zeta_{8} \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( -\zeta_{8}^{3} + \zeta_{8} \) Copy content Toggle raw display
\(\zeta_{8}\)\(=\) \( ( \beta_{3} + \beta_{2} ) / 2 \) Copy content Toggle raw display
\(\zeta_{8}^{2}\)\(=\) \( ( \beta_1 ) / 2 \) Copy content Toggle raw display
\(\zeta_{8}^{3}\)\(=\) \( ( -\beta_{3} + \beta_{2} ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/4608\mathbb{Z}\right)^\times\).

\(n\) \(2053\) \(3583\) \(4097\)
\(\chi(n)\) \(-1\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
2305.1
−0.707107 + 0.707107i
0.707107 0.707107i
0.707107 + 0.707107i
−0.707107 0.707107i
0 0 0 3.41421i 0 −1.41421 0 0 0
2305.2 0 0 0 0.585786i 0 1.41421 0 0 0
2305.3 0 0 0 0.585786i 0 1.41421 0 0 0
2305.4 0 0 0 3.41421i 0 −1.41421 0 0 0
\(n\): e.g. 2-40 or 990-1000
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 4608.2.d.f 4
3.b odd 2 1 1536.2.d.b 4
4.b odd 2 1 4608.2.d.h 4
8.b even 2 1 inner 4608.2.d.f 4
8.d odd 2 1 4608.2.d.h 4
12.b even 2 1 1536.2.d.e 4
16.e even 4 1 4608.2.a.b 2
16.e even 4 1 4608.2.a.q 2
16.f odd 4 1 4608.2.a.d 2
16.f odd 4 1 4608.2.a.o 2
24.f even 2 1 1536.2.d.e 4
24.h odd 2 1 1536.2.d.b 4
48.i odd 4 1 1536.2.a.f yes 2
48.i odd 4 1 1536.2.a.h yes 2
48.k even 4 1 1536.2.a.a 2
48.k even 4 1 1536.2.a.k yes 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1536.2.a.a 2 48.k even 4 1
1536.2.a.f yes 2 48.i odd 4 1
1536.2.a.h yes 2 48.i odd 4 1
1536.2.a.k yes 2 48.k even 4 1
1536.2.d.b 4 3.b odd 2 1
1536.2.d.b 4 24.h odd 2 1
1536.2.d.e 4 12.b even 2 1
1536.2.d.e 4 24.f even 2 1
4608.2.a.b 2 16.e even 4 1
4608.2.a.d 2 16.f odd 4 1
4608.2.a.o 2 16.f odd 4 1
4608.2.a.q 2 16.e even 4 1
4608.2.d.f 4 1.a even 1 1 trivial
4608.2.d.f 4 8.b even 2 1 inner
4608.2.d.h 4 4.b odd 2 1
4608.2.d.h 4 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 \(S_{2}^{\mathrm{new}}(4608, [\chi])\):

\( T_{5}^{4} + 12T_{5}^{2} + 4 \) Copy content Toggle raw display
\( T_{7}^{2} - 2 \) Copy content Toggle raw display
\( T_{17}^{2} + 4T_{17} - 4 \) Copy content Toggle raw display
\( T_{23}^{2} + 8T_{23} + 8 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} \) Copy content Toggle raw display
$5$ \( T^{4} + 12T^{2} + 4 \) Copy content Toggle raw display
$7$ \( (T^{2} - 2)^{2} \) Copy content Toggle raw display
$11$ \( T^{4} + 24T^{2} + 16 \) Copy content Toggle raw display
$13$ \( T^{4} + 24T^{2} + 16 \) Copy content Toggle raw display
$17$ \( (T^{2} + 4 T - 4)^{2} \) Copy content Toggle raw display
$19$ \( (T^{2} + 8)^{2} \) Copy content Toggle raw display
$23$ \( (T^{2} + 8 T + 8)^{2} \) Copy content Toggle raw display
$29$ \( T^{4} + 76T^{2} + 1156 \) Copy content Toggle raw display
$31$ \( (T^{2} - 50)^{2} \) Copy content Toggle raw display
$37$ \( T^{4} + 136T^{2} + 16 \) Copy content Toggle raw display
$41$ \( (T^{2} + 4 T - 68)^{2} \) Copy content Toggle raw display
$43$ \( T^{4} + 48T^{2} + 64 \) Copy content Toggle raw display
$47$ \( (T^{2} - 8 T - 56)^{2} \) Copy content Toggle raw display
$53$ \( T^{4} + 108T^{2} + 324 \) Copy content Toggle raw display
$59$ \( T^{4} + 96T^{2} + 256 \) Copy content Toggle raw display
$61$ \( T^{4} + 136T^{2} + 16 \) Copy content Toggle raw display
$67$ \( (T^{2} + 32)^{2} \) Copy content Toggle raw display
$71$ \( (T^{2} - 72)^{2} \) Copy content Toggle raw display
$73$ \( (T^{2} - 128)^{2} \) Copy content Toggle raw display
$79$ \( (T^{2} - 32 T + 254)^{2} \) Copy content Toggle raw display
$83$ \( T^{4} + 88T^{2} + 784 \) Copy content Toggle raw display
$89$ \( (T^{2} + 12 T - 92)^{2} \) Copy content Toggle raw display
$97$ \( (T^{2} + 4 T - 28)^{2} \) Copy content Toggle raw display
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