Properties

Label 147.5.b.b
Level $147$
Weight $5$
Character orbit 147.b
Self dual yes
Analytic conductor $15.195$
Analytic rank $0$
Dimension $1$
CM discriminant -3
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [147,5,Mod(50,147)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(147, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 0]))
 
N = Newforms(chi, 5, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("147.50");
 
S:= CuspForms(chi, 5);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 147 = 3 \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 5 \)
Character orbit: \([\chi]\) \(=\) 147.b (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: yes
Analytic conductor: \(15.1953845733\)
Analytic rank: \(0\)
Dimension: \(1\)
Coefficient field: \(\mathbb{Q}\)
Coefficient ring: \(\mathbb{Z}\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 21)
Sato-Tate group: $\mathrm{U}(1)[D_{2}]$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 
\(f(q)\) \(=\) \( q + 9 q^{3} + 16 q^{4} + 81 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + 9 q^{3} + 16 q^{4} + 81 q^{9} + 144 q^{12} + 191 q^{13} + 256 q^{16} - 601 q^{19} + 625 q^{25} + 729 q^{27} - 1753 q^{31} + 1296 q^{36} + 2591 q^{37} + 1719 q^{39} + 23 q^{43} + 2304 q^{48} + 3056 q^{52} - 5409 q^{57} - 1966 q^{61} + 4096 q^{64} - 8809 q^{67} - 1249 q^{73} + 5625 q^{75} - 9616 q^{76} - 12361 q^{79} + 6561 q^{81} - 15777 q^{93} - 18814 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/147\mathbb{Z}\right)^\times\).

\(n\) \(50\) \(52\)
\(\chi(n)\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
50.1
0
0 9.00000 16.0000 0 0 0 0 81.0000 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 \(\Q(\sqrt{-3}) \)

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 147.5.b.b 1
3.b odd 2 1 CM 147.5.b.b 1
7.b odd 2 1 147.5.b.a 1
7.c even 3 2 21.5.h.a 2
7.d odd 6 2 147.5.h.a 2
21.c even 2 1 147.5.b.a 1
21.g even 6 2 147.5.h.a 2
21.h odd 6 2 21.5.h.a 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
21.5.h.a 2 7.c even 3 2
21.5.h.a 2 21.h odd 6 2
147.5.b.a 1 7.b odd 2 1
147.5.b.a 1 21.c even 2 1
147.5.b.b 1 1.a even 1 1 trivial
147.5.b.b 1 3.b odd 2 1 CM
147.5.h.a 2 7.d odd 6 2
147.5.h.a 2 21.g even 6 2

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{5}^{\mathrm{new}}(147, [\chi])\):

\( T_{2} \) Copy content Toggle raw display
\( T_{13} - 191 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T \) Copy content Toggle raw display
$3$ \( T - 9 \) Copy content Toggle raw display
$5$ \( T \) Copy content Toggle raw display
$7$ \( T \) Copy content Toggle raw display
$11$ \( T \) Copy content Toggle raw display
$13$ \( T - 191 \) Copy content Toggle raw display
$17$ \( T \) Copy content Toggle raw display
$19$ \( T + 601 \) Copy content Toggle raw display
$23$ \( T \) Copy content Toggle raw display
$29$ \( T \) Copy content Toggle raw display
$31$ \( T + 1753 \) Copy content Toggle raw display
$37$ \( T - 2591 \) Copy content Toggle raw display
$41$ \( T \) Copy content Toggle raw display
$43$ \( T - 23 \) Copy content Toggle raw display
$47$ \( T \) Copy content Toggle raw display
$53$ \( T \) Copy content Toggle raw display
$59$ \( T \) Copy content Toggle raw display
$61$ \( T + 1966 \) Copy content Toggle raw display
$67$ \( T + 8809 \) Copy content Toggle raw display
$71$ \( T \) Copy content Toggle raw display
$73$ \( T + 1249 \) Copy content Toggle raw display
$79$ \( T + 12361 \) Copy content Toggle raw display
$83$ \( T \) Copy content Toggle raw display
$89$ \( T \) Copy content Toggle raw display
$97$ \( T + 18814 \) Copy content Toggle raw display
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