Properties

Label 1980.2.f.b
Level $1980$
Weight $2$
Character orbit 1980.f
Analytic conductor $15.810$
Analytic rank $0$
Dimension $40$
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] = [1980,2,Mod(1871,1980)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1980, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1, 0, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1980.1871");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1980 = 2^{2} \cdot 3^{2} \cdot 5 \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1980.f (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: \(15.8103796002\)
Analytic rank: \(0\)
Dimension: \(40\)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

The dimension is sufficiently large that we do not compute an algebraic \(q\)-expansion, but we have computed the trace expansion.

\(\operatorname{Tr}(f)(q) = \) \( 40 q - 4 q^{4}+O(q^{10}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q) = \) \( 40 q - 4 q^{4} - 4 q^{10} + 40 q^{11} - 16 q^{13} + 8 q^{14} + 4 q^{16} - 16 q^{23} - 40 q^{25} + 32 q^{26} + 8 q^{34} + 16 q^{37} + 4 q^{40} - 4 q^{44} + 8 q^{49} - 64 q^{56} + 80 q^{59} - 16 q^{61} + 56 q^{62} - 4 q^{64} - 16 q^{71} - 48 q^{73} + 40 q^{74} + 8 q^{80} + 16 q^{83} + 32 q^{85} - 48 q^{92} - 48 q^{97}+O(q^{100}) \) Copy content Toggle raw display

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   \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1871.1 −1.39225 0.248254i 0 1.87674 + 0.691264i 1.00000i 0 4.16820i −2.44129 1.42832i 0 0.248254 1.39225i
1871.2 −1.39225 + 0.248254i 0 1.87674 0.691264i 1.00000i 0 4.16820i −2.44129 + 1.42832i 0 0.248254 + 1.39225i
1871.3 −1.37691 0.322654i 0 1.79179 + 0.888535i 1.00000i 0 0.0719637i −2.18045 1.80157i 0 −0.322654 + 1.37691i
1871.4 −1.37691 + 0.322654i 0 1.79179 0.888535i 1.00000i 0 0.0719637i −2.18045 + 1.80157i 0 −0.322654 1.37691i
1871.5 −1.31419 0.522409i 0 1.45418 + 1.37309i 1.00000i 0 1.98169i −1.19375 2.56417i 0 −0.522409 + 1.31419i
1871.6 −1.31419 + 0.522409i 0 1.45418 1.37309i 1.00000i 0 1.98169i −1.19375 + 2.56417i 0 −0.522409 1.31419i
1871.7 −1.09271 0.897769i 0 0.388021 + 1.96200i 1.00000i 0 0.112424i 1.33743 2.49224i 0 0.897769 1.09271i
1871.8 −1.09271 + 0.897769i 0 0.388021 1.96200i 1.00000i 0 0.112424i 1.33743 + 2.49224i 0 0.897769 + 1.09271i
1871.9 −1.03817 0.960312i 0 0.155600 + 1.99394i 1.00000i 0 4.36619i 1.75326 2.21947i 0 −0.960312 + 1.03817i
1871.10 −1.03817 + 0.960312i 0 0.155600 1.99394i 1.00000i 0 4.36619i 1.75326 + 2.21947i 0 −0.960312 1.03817i
1871.11 −1.02572 0.973596i 0 0.104222 + 1.99728i 1.00000i 0 1.00680i 1.83764 2.15013i 0 0.973596 1.02572i
1871.12 −1.02572 + 0.973596i 0 0.104222 1.99728i 1.00000i 0 1.00680i 1.83764 + 2.15013i 0 0.973596 + 1.02572i
1871.13 −0.497594 1.32378i 0 −1.50480 + 1.31741i 1.00000i 0 2.37531i 2.49275 + 1.33649i 0 −1.32378 + 0.497594i
1871.14 −0.497594 + 1.32378i 0 −1.50480 1.31741i 1.00000i 0 2.37531i 2.49275 1.33649i 0 −1.32378 0.497594i
1871.15 −0.459058 1.33763i 0 −1.57853 + 1.22810i 1.00000i 0 3.16400i 2.36739 + 1.54773i 0 −1.33763 + 0.459058i
1871.16 −0.459058 + 1.33763i 0 −1.57853 1.22810i 1.00000i 0 3.16400i 2.36739 1.54773i 0 −1.33763 0.459058i
1871.17 −0.302390 1.38151i 0 −1.81712 + 0.835506i 1.00000i 0 3.30694i 1.70374 + 2.25772i 0 1.38151 0.302390i
1871.18 −0.302390 + 1.38151i 0 −1.81712 0.835506i 1.00000i 0 3.30694i 1.70374 2.25772i 0 1.38151 + 0.302390i
1871.19 −0.199078 1.40013i 0 −1.92074 + 0.557472i 1.00000i 0 0.448695i 1.16291 + 2.57830i 0 1.40013 0.199078i
1871.20 −0.199078 + 1.40013i 0 −1.92074 0.557472i 1.00000i 0 0.448695i 1.16291 2.57830i 0 1.40013 + 0.199078i
See all 40 embeddings
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1871.40
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
12.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1980.2.f.b yes 40
3.b odd 2 1 1980.2.f.a 40
4.b odd 2 1 1980.2.f.a 40
12.b even 2 1 inner 1980.2.f.b yes 40
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1980.2.f.a 40 3.b odd 2 1
1980.2.f.a 40 4.b odd 2 1
1980.2.f.b yes 40 1.a even 1 1 trivial
1980.2.f.b yes 40 12.b even 2 1 inner