Properties

Label 138.2.a.c
Level $138$
Weight $2$
Character orbit 138.a
Self dual yes
Analytic conductor $1.102$
Analytic rank $0$
Dimension $1$
CM no
Inner twists $1$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [138,2,Mod(1,138)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(138, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([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("138.1");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 138 = 2 \cdot 3 \cdot 23 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 138.a (trivial)

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: yes
Analytic conductor: \(1.10193554789\)
Analytic rank: \(0\)
Dimension: \(1\)
Coefficient field: \(\mathbb{Q}\)
Coefficient ring: \(\mathbb{Z}\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Fricke sign: \(-1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 
\(f(q)\) \(=\) \( q + q^{2} - q^{3} + q^{4} + 2 q^{5} - q^{6} + q^{8} + q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + q^{2} - q^{3} + q^{4} + 2 q^{5} - q^{6} + q^{8} + q^{9} + 2 q^{10} - q^{12} - 2 q^{13} - 2 q^{15} + q^{16} + 2 q^{17} + q^{18} - 8 q^{19} + 2 q^{20} - q^{23} - q^{24} - q^{25} - 2 q^{26} - q^{27} - 2 q^{29} - 2 q^{30} - 8 q^{31} + q^{32} + 2 q^{34} + q^{36} + 2 q^{37} - 8 q^{38} + 2 q^{39} + 2 q^{40} + 10 q^{41} + 8 q^{43} + 2 q^{45} - q^{46} + 8 q^{47} - q^{48} - 7 q^{49} - q^{50} - 2 q^{51} - 2 q^{52} + 2 q^{53} - q^{54} + 8 q^{57} - 2 q^{58} - 4 q^{59} - 2 q^{60} + 2 q^{61} - 8 q^{62} + q^{64} - 4 q^{65} + 8 q^{67} + 2 q^{68} + q^{69} + q^{72} - 6 q^{73} + 2 q^{74} + q^{75} - 8 q^{76} + 2 q^{78} + 8 q^{79} + 2 q^{80} + q^{81} + 10 q^{82} - 16 q^{83} + 4 q^{85} + 8 q^{86} + 2 q^{87} + 18 q^{89} + 2 q^{90} - q^{92} + 8 q^{93} + 8 q^{94} - 16 q^{95} - q^{96} + 10 q^{97} - 7 q^{98}+O(q^{100}) \) 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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
0
1.00000 −1.00000 1.00000 2.00000 −1.00000 0 1.00000 1.00000 2.00000
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(-1\)
\(3\) \(1\)
\(23\) \(1\)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 138.2.a.c 1
3.b odd 2 1 414.2.a.a 1
4.b odd 2 1 1104.2.a.g 1
5.b even 2 1 3450.2.a.k 1
5.c odd 4 2 3450.2.d.f 2
7.b odd 2 1 6762.2.a.bg 1
8.b even 2 1 4416.2.a.s 1
8.d odd 2 1 4416.2.a.c 1
12.b even 2 1 3312.2.a.d 1
23.b odd 2 1 3174.2.a.e 1
69.c even 2 1 9522.2.a.d 1
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
138.2.a.c 1 1.a even 1 1 trivial
414.2.a.a 1 3.b odd 2 1
1104.2.a.g 1 4.b odd 2 1
3174.2.a.e 1 23.b odd 2 1
3312.2.a.d 1 12.b even 2 1
3450.2.a.k 1 5.b even 2 1
3450.2.d.f 2 5.c odd 4 2
4416.2.a.c 1 8.d odd 2 1
4416.2.a.s 1 8.b even 2 1
6762.2.a.bg 1 7.b odd 2 1
9522.2.a.d 1 69.c even 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5} - 2 \) acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(138))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T - 1 \) Copy content Toggle raw display
$3$ \( T + 1 \) Copy content Toggle raw display
$5$ \( T - 2 \) Copy content Toggle raw display
$7$ \( T \) Copy content Toggle raw display
$11$ \( T \) Copy content Toggle raw display
$13$ \( T + 2 \) Copy content Toggle raw display
$17$ \( T - 2 \) Copy content Toggle raw display
$19$ \( T + 8 \) Copy content Toggle raw display
$23$ \( T + 1 \) Copy content Toggle raw display
$29$ \( T + 2 \) Copy content Toggle raw display
$31$ \( T + 8 \) Copy content Toggle raw display
$37$ \( T - 2 \) Copy content Toggle raw display
$41$ \( T - 10 \) Copy content Toggle raw display
$43$ \( T - 8 \) Copy content Toggle raw display
$47$ \( T - 8 \) Copy content Toggle raw display
$53$ \( T - 2 \) Copy content Toggle raw display
$59$ \( T + 4 \) Copy content Toggle raw display
$61$ \( T - 2 \) Copy content Toggle raw display
$67$ \( T - 8 \) Copy content Toggle raw display
$71$ \( T \) Copy content Toggle raw display
$73$ \( T + 6 \) Copy content Toggle raw display
$79$ \( T - 8 \) Copy content Toggle raw display
$83$ \( T + 16 \) Copy content Toggle raw display
$89$ \( T - 18 \) Copy content Toggle raw display
$97$ \( T - 10 \) Copy content Toggle raw display
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