Properties

Label 1045.1.k.a
Level $1045$
Weight $1$
Character orbit 1045.k
Analytic conductor $0.522$
Analytic rank $0$
Dimension $2$
Projective image $D_{4}$
RM discriminant 209
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1045,1,Mod(208,1045)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1045, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([3, 2, 2]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1045.208");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1045 = 5 \cdot 11 \cdot 19 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 1045.k (of order \(4\), degree \(2\), 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: \(0.521522938201\)
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: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{4}\)
Projective field: Galois closure of 4.0.26125.1

$q$-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.

\(f(q)\) \(=\) \( q + ( - i - 1) q^{2} + i q^{4} - i q^{5} - q^{8} - i q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + ( - i - 1) q^{2} + i q^{4} - i q^{5} - q^{8} - i q^{9} + (i - 1) q^{10} + q^{11} + ( - i + 1) q^{13} + q^{16} + (i - 1) q^{18} + i q^{19} + q^{20} + ( - i - 1) q^{22} + (i - 1) q^{23} - q^{25} - q^{26} - i q^{29} + ( - i - 1) q^{32} + q^{36} + ( - i + 1) q^{38} + i q^{44} - q^{45} + q^{46} + ( - i - 1) q^{47} + i q^{49} + (i + 1) q^{50} + (i + 1) q^{52} - i q^{55} + (2 i - 2) q^{58} + i q^{64} + ( - i - 1) q^{65} - q^{76} - i q^{80} - q^{81} + (i + 1) q^{90} + ( - i - 1) q^{92} + (2 i - 1) q^{94} + q^{95} + ( - i + 1) q^{98} - i q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 2 q^{2}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - 2 q^{2} - 2 q^{10} + 2 q^{11} + 2 q^{13} + 2 q^{16} - 2 q^{18} + 2 q^{20} - 2 q^{22} - 2 q^{23} - 2 q^{25} - 4 q^{26} - 2 q^{32} + 2 q^{36} + 2 q^{38} - 2 q^{45} + 4 q^{46} - 2 q^{47} + 2 q^{50} + 2 q^{52} - 4 q^{58} - 2 q^{65} - 2 q^{76} - 2 q^{81} + 2 q^{90} - 2 q^{92} + 2 q^{95} + 2 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1045\mathbb{Z}\right)^\times\).

\(n\) \(496\) \(761\) \(837\)
\(\chi(n)\) \(-1\) \(-1\) \(i\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
208.1
1.00000i
1.00000i
−1.00000 + 1.00000i 0 1.00000i 1.00000i 0 0 0 1.00000i −1.00000 1.00000i
417.1 −1.00000 1.00000i 0 1.00000i 1.00000i 0 0 0 1.00000i −1.00000 + 1.00000i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
209.d even 2 1 RM by \(\Q(\sqrt{209}) \)
5.c odd 4 1 inner
1045.k odd 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1045.1.k.a 2
5.c odd 4 1 inner 1045.1.k.a 2
11.b odd 2 1 1045.1.k.d yes 2
19.b odd 2 1 1045.1.k.d yes 2
55.e even 4 1 1045.1.k.d yes 2
95.g even 4 1 1045.1.k.d yes 2
209.d even 2 1 RM 1045.1.k.a 2
1045.k odd 4 1 inner 1045.1.k.a 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1045.1.k.a 2 1.a even 1 1 trivial
1045.1.k.a 2 5.c odd 4 1 inner
1045.1.k.a 2 209.d even 2 1 RM
1045.1.k.a 2 1045.k odd 4 1 inner
1045.1.k.d yes 2 11.b odd 2 1
1045.1.k.d yes 2 19.b odd 2 1
1045.1.k.d yes 2 55.e even 4 1
1045.1.k.d yes 2 95.g even 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{1}^{\mathrm{new}}(1045, [\chi])\):

\( T_{2}^{2} + 2T_{2} + 2 \) Copy content Toggle raw display
\( T_{7} \) Copy content Toggle raw display

Hecke characteristic polynomials

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