Properties

Label 3900.2.bm.c
Level $3900$
Weight $2$
Character orbit 3900.bm
Analytic conductor $31.142$
Analytic rank $0$
Dimension $40$
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] = [3900,2,Mod(2257,3900)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(3900, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([0, 0, 1, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("3900.2257");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 3900 = 2^{2} \cdot 3 \cdot 5^{2} \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 3900.bm (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: \(31.1416567883\)
Analytic rank: \(0\)
Dimension: \(40\)
Relative dimension: \(20\) over \(\Q(i)\)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{4}]$

$q$-expansion

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

\(\operatorname{Tr}(f)(q) = \) \( 40 q+O(q^{10}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q) = \) \( 40 q - 8 q^{11} - 20 q^{19} - 4 q^{21} + 12 q^{31} + 16 q^{39} + 24 q^{41} + 24 q^{49} + 16 q^{59} - 16 q^{69} - 56 q^{71} - 40 q^{81} - 48 q^{89} + 28 q^{91} + 8 q^{99}+O(q^{100}) \) 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   \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
2257.1 0 −0.707107 + 0.707107i 0 0 0 4.64330 0 1.00000i 0
2257.2 0 −0.707107 + 0.707107i 0 0 0 −3.54113 0 1.00000i 0
2257.3 0 −0.707107 + 0.707107i 0 0 0 3.56068 0 1.00000i 0
2257.4 0 −0.707107 + 0.707107i 0 0 0 −3.42424 0 1.00000i 0
2257.5 0 −0.707107 + 0.707107i 0 0 0 0.0776760 0 1.00000i 0
2257.6 0 −0.707107 + 0.707107i 0 0 0 −0.203531 0 1.00000i 0
2257.7 0 −0.707107 + 0.707107i 0 0 0 1.09376 0 1.00000i 0
2257.8 0 −0.707107 + 0.707107i 0 0 0 −1.70861 0 1.00000i 0
2257.9 0 −0.707107 + 0.707107i 0 0 0 −2.08284 0 1.00000i 0
2257.10 0 −0.707107 + 0.707107i 0 0 0 2.99915 0 1.00000i 0
2257.11 0 0.707107 0.707107i 0 0 0 −2.99915 0 1.00000i 0
2257.12 0 0.707107 0.707107i 0 0 0 2.08284 0 1.00000i 0
2257.13 0 0.707107 0.707107i 0 0 0 1.70861 0 1.00000i 0
2257.14 0 0.707107 0.707107i 0 0 0 −1.09376 0 1.00000i 0
2257.15 0 0.707107 0.707107i 0 0 0 0.203531 0 1.00000i 0
2257.16 0 0.707107 0.707107i 0 0 0 −0.0776760 0 1.00000i 0
2257.17 0 0.707107 0.707107i 0 0 0 3.42424 0 1.00000i 0
2257.18 0 0.707107 0.707107i 0 0 0 −3.56068 0 1.00000i 0
2257.19 0 0.707107 0.707107i 0 0 0 3.54113 0 1.00000i 0
2257.20 0 0.707107 0.707107i 0 0 0 −4.64330 0 1.00000i 0
See all 40 embeddings
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 2257.20
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
5.b even 2 1 inner
65.f even 4 1 inner
65.k even 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 3900.2.bm.c yes 40
5.b even 2 1 inner 3900.2.bm.c yes 40
5.c odd 4 2 3900.2.r.c 40
13.d odd 4 1 3900.2.r.c 40
65.f even 4 1 inner 3900.2.bm.c yes 40
65.g odd 4 1 3900.2.r.c 40
65.k even 4 1 inner 3900.2.bm.c yes 40
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
3900.2.r.c 40 5.c odd 4 2
3900.2.r.c 40 13.d odd 4 1
3900.2.r.c 40 65.g odd 4 1
3900.2.bm.c yes 40 1.a even 1 1 trivial
3900.2.bm.c yes 40 5.b even 2 1 inner
3900.2.bm.c yes 40 65.f even 4 1 inner
3900.2.bm.c yes 40 65.k even 4 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{7}^{20} - 76 T_{7}^{18} + 2373 T_{7}^{16} - 39516 T_{7}^{14} + 379746 T_{7}^{12} - 2122652 T_{7}^{10} + \cdots + 1369 \) acting on \(S_{2}^{\mathrm{new}}(3900, [\chi])\). Copy content Toggle raw display