Properties

Label 1600.2.d.e
Level $1600$
Weight $2$
Character orbit 1600.d
Analytic conductor $12.776$
Analytic rank $0$
Dimension $4$
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] = [1600,2,Mod(801,1600)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1600, 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("1600.801");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1600 = 2^{6} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1600.d (of order \(2\), degree \(1\), 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: \(12.7760643234\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\zeta_{12})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{4} \)
Twist minimal: yes
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.

\(f(q)\) \(=\) \( q + \beta_1 q^{3} - \beta_{3} q^{7} + 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_1 q^{3} - \beta_{3} q^{7} + 2 q^{9} + 3 \beta_1 q^{11} - \beta_{2} q^{13} - 3 q^{17} + \beta_1 q^{19} - \beta_{2} q^{21} + 5 \beta_1 q^{27} + 3 \beta_{2} q^{29} - 2 \beta_{3} q^{31} - 3 q^{33} - 3 \beta_{2} q^{37} + \beta_{3} q^{39} - 9 q^{41} - 4 \beta_1 q^{43} - 3 \beta_{3} q^{47} + 5 q^{49} - 3 \beta_1 q^{51} - q^{57} - 12 \beta_1 q^{59} - \beta_{2} q^{61} - 2 \beta_{3} q^{63} + 11 \beta_1 q^{67} - 3 \beta_{3} q^{71} - 7 q^{73} - 3 \beta_{2} q^{77} + 3 \beta_{3} q^{79} + q^{81} + 15 \beta_1 q^{83} - 3 \beta_{3} q^{87} - 3 q^{89} + 12 \beta_1 q^{91} - 2 \beta_{2} q^{93} - 14 q^{97} + 6 \beta_1 q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + 8 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q + 8 q^{9} - 12 q^{17} - 12 q^{33} - 36 q^{41} + 20 q^{49} - 4 q^{57} - 28 q^{73} + 4 q^{81} - 12 q^{89} - 56 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring

\(\beta_{1}\)\(=\) \( \zeta_{12}^{3} \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( 4\zeta_{12}^{2} - 2 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( -2\zeta_{12}^{3} + 4\zeta_{12} \) Copy content Toggle raw display
\(\zeta_{12}\)\(=\) \( ( \beta_{3} + 2\beta_1 ) / 4 \) Copy content Toggle raw display
\(\zeta_{12}^{2}\)\(=\) \( ( \beta_{2} + 2 ) / 4 \) Copy content Toggle raw display
\(\zeta_{12}^{3}\)\(=\) \( \beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1600\mathbb{Z}\right)^\times\).

\(n\) \(577\) \(901\) \(1151\)
\(\chi(n)\) \(1\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
801.1
0.866025 0.500000i
−0.866025 0.500000i
0.866025 + 0.500000i
−0.866025 + 0.500000i
0 1.00000i 0 0 0 −3.46410 0 2.00000 0
801.2 0 1.00000i 0 0 0 3.46410 0 2.00000 0
801.3 0 1.00000i 0 0 0 −3.46410 0 2.00000 0
801.4 0 1.00000i 0 0 0 3.46410 0 2.00000 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
4.b odd 2 1 inner
8.b even 2 1 inner
8.d odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1600.2.d.e 4
4.b odd 2 1 inner 1600.2.d.e 4
5.b even 2 1 1600.2.d.f yes 4
5.c odd 4 1 1600.2.f.c 4
5.c odd 4 1 1600.2.f.g 4
8.b even 2 1 inner 1600.2.d.e 4
8.d odd 2 1 inner 1600.2.d.e 4
16.e even 4 1 6400.2.a.bb 2
16.e even 4 1 6400.2.a.cf 2
16.f odd 4 1 6400.2.a.bb 2
16.f odd 4 1 6400.2.a.cf 2
20.d odd 2 1 1600.2.d.f yes 4
20.e even 4 1 1600.2.f.c 4
20.e even 4 1 1600.2.f.g 4
40.e odd 2 1 1600.2.d.f yes 4
40.f even 2 1 1600.2.d.f yes 4
40.i odd 4 1 1600.2.f.c 4
40.i odd 4 1 1600.2.f.g 4
40.k even 4 1 1600.2.f.c 4
40.k even 4 1 1600.2.f.g 4
80.k odd 4 1 6400.2.a.ba 2
80.k odd 4 1 6400.2.a.cg 2
80.q even 4 1 6400.2.a.ba 2
80.q even 4 1 6400.2.a.cg 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1600.2.d.e 4 1.a even 1 1 trivial
1600.2.d.e 4 4.b odd 2 1 inner
1600.2.d.e 4 8.b even 2 1 inner
1600.2.d.e 4 8.d odd 2 1 inner
1600.2.d.f yes 4 5.b even 2 1
1600.2.d.f yes 4 20.d odd 2 1
1600.2.d.f yes 4 40.e odd 2 1
1600.2.d.f yes 4 40.f even 2 1
1600.2.f.c 4 5.c odd 4 1
1600.2.f.c 4 20.e even 4 1
1600.2.f.c 4 40.i odd 4 1
1600.2.f.c 4 40.k even 4 1
1600.2.f.g 4 5.c odd 4 1
1600.2.f.g 4 20.e even 4 1
1600.2.f.g 4 40.i odd 4 1
1600.2.f.g 4 40.k even 4 1
6400.2.a.ba 2 80.k odd 4 1
6400.2.a.ba 2 80.q even 4 1
6400.2.a.bb 2 16.e even 4 1
6400.2.a.bb 2 16.f odd 4 1
6400.2.a.cf 2 16.e even 4 1
6400.2.a.cf 2 16.f odd 4 1
6400.2.a.cg 2 80.k odd 4 1
6400.2.a.cg 2 80.q even 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1600, [\chi])\):

\( T_{3}^{2} + 1 \) Copy content Toggle raw display
\( T_{7}^{2} - 12 \) Copy content Toggle raw display
\( T_{17} + 3 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( (T^{2} + 1)^{2} \) Copy content Toggle raw display
$5$ \( T^{4} \) Copy content Toggle raw display
$7$ \( (T^{2} - 12)^{2} \) Copy content Toggle raw display
$11$ \( (T^{2} + 9)^{2} \) Copy content Toggle raw display
$13$ \( (T^{2} + 12)^{2} \) Copy content Toggle raw display
$17$ \( (T + 3)^{4} \) Copy content Toggle raw display
$19$ \( (T^{2} + 1)^{2} \) Copy content Toggle raw display
$23$ \( T^{4} \) Copy content Toggle raw display
$29$ \( (T^{2} + 108)^{2} \) Copy content Toggle raw display
$31$ \( (T^{2} - 48)^{2} \) Copy content Toggle raw display
$37$ \( (T^{2} + 108)^{2} \) Copy content Toggle raw display
$41$ \( (T + 9)^{4} \) Copy content Toggle raw display
$43$ \( (T^{2} + 16)^{2} \) Copy content Toggle raw display
$47$ \( (T^{2} - 108)^{2} \) Copy content Toggle raw display
$53$ \( T^{4} \) Copy content Toggle raw display
$59$ \( (T^{2} + 144)^{2} \) Copy content Toggle raw display
$61$ \( (T^{2} + 12)^{2} \) Copy content Toggle raw display
$67$ \( (T^{2} + 121)^{2} \) Copy content Toggle raw display
$71$ \( (T^{2} - 108)^{2} \) Copy content Toggle raw display
$73$ \( (T + 7)^{4} \) Copy content Toggle raw display
$79$ \( (T^{2} - 108)^{2} \) Copy content Toggle raw display
$83$ \( (T^{2} + 225)^{2} \) Copy content Toggle raw display
$89$ \( (T + 3)^{4} \) Copy content Toggle raw display
$97$ \( (T + 14)^{4} \) Copy content Toggle raw display
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