Properties

Label 3780.1.o.j
Level $3780$
Weight $1$
Character orbit 3780.o
Analytic conductor $1.886$
Analytic rank $0$
Dimension $4$
Projective image $D_{6}$
CM discriminant -84
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [3780,1,Mod(3779,3780)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(3780, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1, 1, 1]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("3780.3779");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 3780 = 2^{2} \cdot 3^{3} \cdot 5 \cdot 7 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 3780.o (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: \(1.88646574775\)
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: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{6}\)
Projective field: Galois closure of 6.2.1500282000.2

$q$-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.

\(f(q)\) \(=\) \( q - \zeta_{12}^{3} q^{2} - q^{4} - \zeta_{12}^{4} q^{5} - \zeta_{12}^{3} q^{7} + \zeta_{12}^{3} q^{8} +O(q^{10}) \) Copy content Toggle raw display \( q - \zeta_{12}^{3} q^{2} - q^{4} - \zeta_{12}^{4} q^{5} - \zeta_{12}^{3} q^{7} + \zeta_{12}^{3} q^{8} - \zeta_{12} q^{10} + ( - \zeta_{12}^{5} + \zeta_{12}) q^{11} - q^{14} + q^{16} + ( - \zeta_{12}^{5} + \zeta_{12}) q^{19} + \zeta_{12}^{4} q^{20} + ( - \zeta_{12}^{4} - \zeta_{12}^{2}) q^{22} + \zeta_{12}^{3} q^{23} - \zeta_{12}^{2} q^{25} + \zeta_{12}^{3} q^{28} + ( - \zeta_{12}^{5} + \zeta_{12}) q^{31} - \zeta_{12}^{3} q^{32} - \zeta_{12} q^{35} + (\zeta_{12}^{4} + \zeta_{12}^{2}) q^{37} + ( - \zeta_{12}^{4} - \zeta_{12}^{2}) q^{38} + \zeta_{12} q^{40} - q^{41} + (\zeta_{12}^{5} - \zeta_{12}) q^{44} + q^{46} - q^{49} + \zeta_{12}^{5} q^{50} + ( - \zeta_{12}^{5} - \zeta_{12}^{3}) q^{55} + q^{56} + ( - \zeta_{12}^{4} - \zeta_{12}^{2}) q^{62} - q^{64} + \zeta_{12}^{4} q^{70} + (\zeta_{12}^{5} - \zeta_{12}) q^{71} + ( - \zeta_{12}^{5} + \zeta_{12}) q^{74} + (\zeta_{12}^{5} - \zeta_{12}) q^{76} + ( - \zeta_{12}^{4} - \zeta_{12}^{2}) q^{77} - \zeta_{12}^{4} q^{80} + \zeta_{12}^{3} q^{82} + (\zeta_{12}^{4} + \zeta_{12}^{2}) q^{88} - q^{89} - \zeta_{12}^{3} q^{92} + ( - \zeta_{12}^{5} - \zeta_{12}^{3}) q^{95} + \zeta_{12}^{3} q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 4 q^{4} + 2 q^{5}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 4 q^{4} + 2 q^{5} - 4 q^{14} + 4 q^{16} - 2 q^{20} - 2 q^{25} - 4 q^{41} + 4 q^{46} - 4 q^{49} + 4 q^{56} - 4 q^{64} - 2 q^{70} + 2 q^{80} - 4 q^{89}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/3780\mathbb{Z}\right)^\times\).

\(n\) \(757\) \(1081\) \(1541\) \(1891\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
3779.1
0.866025 + 0.500000i
−0.866025 + 0.500000i
−0.866025 0.500000i
0.866025 0.500000i
1.00000i 0 −1.00000 0.500000 0.866025i 0 1.00000i 1.00000i 0 −0.866025 0.500000i
3779.2 1.00000i 0 −1.00000 0.500000 + 0.866025i 0 1.00000i 1.00000i 0 0.866025 0.500000i
3779.3 1.00000i 0 −1.00000 0.500000 0.866025i 0 1.00000i 1.00000i 0 0.866025 + 0.500000i
3779.4 1.00000i 0 −1.00000 0.500000 + 0.866025i 0 1.00000i 1.00000i 0 −0.866025 + 0.500000i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
84.h odd 2 1 CM by \(\Q(\sqrt{-21}) \)
4.b odd 2 1 inner
5.b even 2 1 inner
20.d odd 2 1 inner
21.c even 2 1 inner
105.g even 2 1 inner
420.o odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 3780.1.o.j yes 4
3.b odd 2 1 3780.1.o.i 4
4.b odd 2 1 inner 3780.1.o.j yes 4
5.b even 2 1 inner 3780.1.o.j yes 4
7.b odd 2 1 3780.1.o.i 4
12.b even 2 1 3780.1.o.i 4
15.d odd 2 1 3780.1.o.i 4
20.d odd 2 1 inner 3780.1.o.j yes 4
21.c even 2 1 inner 3780.1.o.j yes 4
28.d even 2 1 3780.1.o.i 4
35.c odd 2 1 3780.1.o.i 4
60.h even 2 1 3780.1.o.i 4
84.h odd 2 1 CM 3780.1.o.j yes 4
105.g even 2 1 inner 3780.1.o.j yes 4
140.c even 2 1 3780.1.o.i 4
420.o odd 2 1 inner 3780.1.o.j yes 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
3780.1.o.i 4 3.b odd 2 1
3780.1.o.i 4 7.b odd 2 1
3780.1.o.i 4 12.b even 2 1
3780.1.o.i 4 15.d odd 2 1
3780.1.o.i 4 28.d even 2 1
3780.1.o.i 4 35.c odd 2 1
3780.1.o.i 4 60.h even 2 1
3780.1.o.i 4 140.c even 2 1
3780.1.o.j yes 4 1.a even 1 1 trivial
3780.1.o.j yes 4 4.b odd 2 1 inner
3780.1.o.j yes 4 5.b even 2 1 inner
3780.1.o.j yes 4 20.d odd 2 1 inner
3780.1.o.j yes 4 21.c even 2 1 inner
3780.1.o.j yes 4 84.h odd 2 1 CM
3780.1.o.j yes 4 105.g even 2 1 inner
3780.1.o.j yes 4 420.o odd 2 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{1}^{\mathrm{new}}(3780, [\chi])\):

\( T_{11}^{2} - 3 \) Copy content Toggle raw display
\( T_{13} \) Copy content Toggle raw display
\( T_{19}^{2} - 3 \) Copy content Toggle raw display
\( T_{41} + 1 \) Copy content Toggle raw display

Hecke characteristic polynomials

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