Properties

Label 3520.1.y.b
Level $3520$
Weight $1$
Character orbit 3520.y
Analytic conductor $1.757$
Analytic rank $0$
Dimension $2$
Projective image $D_{4}$
CM discriminant -11
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [3520,1,Mod(703,3520)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(3520, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([2, 0, 3, 2]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("3520.703");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 3520 = 2^{6} \cdot 5 \cdot 11 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 3520.y (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: \(1.75670884447\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(i)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 880)
Projective image: \(D_{4}\)
Projective field: Galois closure of 4.0.242000.1
Artin image: $C_4^2:C_2^2$
Artin field: Galois closure of \(\mathbb{Q}[x]/(x^{16} - \cdots)\)

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

The \(q\)-expansion and trace form are shown below.

\(f(q)\) \(=\) \( q + (i + 1) q^{3} + i q^{5} + i q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + (i + 1) q^{3} + i q^{5} + i q^{9} + i q^{11} + (i - 1) q^{15} + ( - i - 1) q^{23} - q^{25} + q^{27} + i q^{31} + (i - 1) q^{33} + (i + 1) q^{37} - q^{45} + ( - i + 1) q^{47} - i q^{49} + ( - i + 1) q^{53} - q^{55} - q^{59} + (i - 1) q^{67} + ( - 2 i + 1) q^{69} + ( - i - 1) q^{75} + q^{81} - i q^{89} + (2 i - 2) q^{93} + (i + 1) q^{97} - q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 2 q^{3}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 2 q^{3} - 2 q^{15} - 2 q^{23} - 2 q^{25} - 2 q^{33} + 2 q^{37} - 2 q^{45} + 2 q^{47} + 2 q^{53} - 2 q^{55} - 4 q^{59} - 2 q^{67} - 2 q^{75} + 2 q^{81} - 4 q^{93} + 2 q^{97} - 2 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/3520\mathbb{Z}\right)^\times\).

\(n\) \(321\) \(1541\) \(2751\) \(2817\)
\(\chi(n)\) \(-1\) \(1\) \(-1\) \(i\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
703.1
1.00000i
1.00000i
0 1.00000 1.00000i 0 1.00000i 0 0 0 1.00000i 0
1407.1 0 1.00000 + 1.00000i 0 1.00000i 0 0 0 1.00000i 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
11.b odd 2 1 CM by \(\Q(\sqrt{-11}) \)
20.e even 4 1 inner
220.i odd 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 3520.1.y.b 2
4.b odd 2 1 3520.1.y.a 2
5.c odd 4 1 3520.1.y.a 2
8.b even 2 1 880.1.y.a 2
8.d odd 2 1 880.1.y.b yes 2
11.b odd 2 1 CM 3520.1.y.b 2
20.e even 4 1 inner 3520.1.y.b 2
40.i odd 4 1 880.1.y.b yes 2
40.k even 4 1 880.1.y.a 2
44.c even 2 1 3520.1.y.a 2
55.e even 4 1 3520.1.y.a 2
88.b odd 2 1 880.1.y.a 2
88.g even 2 1 880.1.y.b yes 2
220.i odd 4 1 inner 3520.1.y.b 2
440.t even 4 1 880.1.y.b yes 2
440.w odd 4 1 880.1.y.a 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
880.1.y.a 2 8.b even 2 1
880.1.y.a 2 40.k even 4 1
880.1.y.a 2 88.b odd 2 1
880.1.y.a 2 440.w odd 4 1
880.1.y.b yes 2 8.d odd 2 1
880.1.y.b yes 2 40.i odd 4 1
880.1.y.b yes 2 88.g even 2 1
880.1.y.b yes 2 440.t even 4 1
3520.1.y.a 2 4.b odd 2 1
3520.1.y.a 2 5.c odd 4 1
3520.1.y.a 2 44.c even 2 1
3520.1.y.a 2 55.e even 4 1
3520.1.y.b 2 1.a even 1 1 trivial
3520.1.y.b 2 11.b odd 2 1 CM
3520.1.y.b 2 20.e even 4 1 inner
3520.1.y.b 2 220.i odd 4 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{2} - 2T_{3} + 2 \) acting on \(S_{1}^{\mathrm{new}}(3520, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

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