Properties

Label 39.3.i.a
Level $39$
Weight $3$
Character orbit 39.i
Analytic conductor $1.063$
Analytic rank $0$
Dimension $2$
CM discriminant -3
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [39,3,Mod(29,39)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(39, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([3, 2]))
 
N = Newforms(chi, 3, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("39.29");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 39 = 3 \cdot 13 \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 39.i (of order \(6\), 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: \(1.06267303101\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-3}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{4}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{U}(1)[D_{6}]$

$q$-expansion

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

Coefficients of the \(q\)-expansion are expressed in terms of a primitive root of unity \(\zeta_{6}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 3 \zeta_{6} q^{3} + (4 \zeta_{6} - 4) q^{4} + ( - 13 \zeta_{6} + 13) q^{7} + (9 \zeta_{6} - 9) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + 3 \zeta_{6} q^{3} + (4 \zeta_{6} - 4) q^{4} + ( - 13 \zeta_{6} + 13) q^{7} + (9 \zeta_{6} - 9) q^{9} - 12 q^{12} + ( - 15 \zeta_{6} + 7) q^{13} - 16 \zeta_{6} q^{16} + (26 \zeta_{6} - 26) q^{19} + 39 q^{21} + 25 q^{25} - 27 q^{27} + 52 \zeta_{6} q^{28} - 13 q^{31} - 36 \zeta_{6} q^{36} - 26 \zeta_{6} q^{37} + ( - 24 \zeta_{6} + 45) q^{39} + (83 \zeta_{6} - 83) q^{43} + ( - 48 \zeta_{6} + 48) q^{48} - 120 \zeta_{6} q^{49} + (28 \zeta_{6} + 32) q^{52} - 78 q^{57} + (47 \zeta_{6} - 47) q^{61} + 117 \zeta_{6} q^{63} + 64 q^{64} + 13 \zeta_{6} q^{67} + 143 q^{73} + 75 \zeta_{6} q^{75} - 104 \zeta_{6} q^{76} + 11 q^{79} - 81 \zeta_{6} q^{81} + (156 \zeta_{6} - 156) q^{84} + ( - 91 \zeta_{6} - 104) q^{91} - 39 \zeta_{6} q^{93} + ( - 169 \zeta_{6} + 169) q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 3 q^{3} - 4 q^{4} + 13 q^{7} - 9 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 3 q^{3} - 4 q^{4} + 13 q^{7} - 9 q^{9} - 24 q^{12} - q^{13} - 16 q^{16} - 26 q^{19} + 78 q^{21} + 50 q^{25} - 54 q^{27} + 52 q^{28} - 26 q^{31} - 36 q^{36} - 26 q^{37} + 66 q^{39} - 83 q^{43} + 48 q^{48} - 120 q^{49} + 92 q^{52} - 156 q^{57} - 47 q^{61} + 117 q^{63} + 128 q^{64} + 13 q^{67} + 286 q^{73} + 75 q^{75} - 104 q^{76} + 22 q^{79} - 81 q^{81} - 156 q^{84} - 299 q^{91} - 39 q^{93} + 169 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/39\mathbb{Z}\right)^\times\).

\(n\) \(14\) \(28\)
\(\chi(n)\) \(-1\) \(-1 + \zeta_{6}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
29.1
0.500000 + 0.866025i
0.500000 0.866025i
0 1.50000 + 2.59808i −2.00000 + 3.46410i 0 0 6.50000 11.2583i 0 −4.50000 + 7.79423i 0
35.1 0 1.50000 2.59808i −2.00000 3.46410i 0 0 6.50000 + 11.2583i 0 −4.50000 7.79423i 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
3.b odd 2 1 CM by \(\Q(\sqrt{-3}) \)
13.c even 3 1 inner
39.i odd 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 39.3.i.a 2
3.b odd 2 1 CM 39.3.i.a 2
13.c even 3 1 inner 39.3.i.a 2
13.c even 3 1 507.3.c.a 1
13.e even 6 1 507.3.c.b 1
13.f odd 12 2 507.3.d.a 2
39.h odd 6 1 507.3.c.b 1
39.i odd 6 1 inner 39.3.i.a 2
39.i odd 6 1 507.3.c.a 1
39.k even 12 2 507.3.d.a 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
39.3.i.a 2 1.a even 1 1 trivial
39.3.i.a 2 3.b odd 2 1 CM
39.3.i.a 2 13.c even 3 1 inner
39.3.i.a 2 39.i odd 6 1 inner
507.3.c.a 1 13.c even 3 1
507.3.c.a 1 39.i odd 6 1
507.3.c.b 1 13.e even 6 1
507.3.c.b 1 39.h odd 6 1
507.3.d.a 2 13.f odd 12 2
507.3.d.a 2 39.k even 12 2

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2} \) acting on \(S_{3}^{\mathrm{new}}(39, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} - 3T + 9 \) Copy content Toggle raw display
$5$ \( T^{2} \) Copy content Toggle raw display
$7$ \( T^{2} - 13T + 169 \) Copy content Toggle raw display
$11$ \( T^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + T + 169 \) Copy content Toggle raw display
$17$ \( T^{2} \) Copy content Toggle raw display
$19$ \( T^{2} + 26T + 676 \) Copy content Toggle raw display
$23$ \( T^{2} \) Copy content Toggle raw display
$29$ \( T^{2} \) Copy content Toggle raw display
$31$ \( (T + 13)^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 26T + 676 \) Copy content Toggle raw display
$41$ \( T^{2} \) Copy content Toggle raw display
$43$ \( T^{2} + 83T + 6889 \) Copy content Toggle raw display
$47$ \( T^{2} \) Copy content Toggle raw display
$53$ \( T^{2} \) Copy content Toggle raw display
$59$ \( T^{2} \) Copy content Toggle raw display
$61$ \( T^{2} + 47T + 2209 \) Copy content Toggle raw display
$67$ \( T^{2} - 13T + 169 \) Copy content Toggle raw display
$71$ \( T^{2} \) Copy content Toggle raw display
$73$ \( (T - 143)^{2} \) Copy content Toggle raw display
$79$ \( (T - 11)^{2} \) Copy content Toggle raw display
$83$ \( T^{2} \) Copy content Toggle raw display
$89$ \( T^{2} \) Copy content Toggle raw display
$97$ \( T^{2} - 169T + 28561 \) Copy content Toggle raw display
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