Properties

Label 136.3.e.b
Level $136$
Weight $3$
Character orbit 136.e
Analytic conductor $3.706$
Analytic rank $0$
Dimension $2$
CM discriminant -8
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [136,3,Mod(67,136)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(136, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1, 1]))
 
N = Newforms(chi, 3, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("136.67");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 136 = 2^{3} \cdot 17 \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 136.e (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: \(3.70573159530\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-2}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 2 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: yes
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)
 

Coefficients of the \(q\)-expansion are expressed in terms of \(\beta = 4\sqrt{-2}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 2 q^{2} + \beta q^{3} + 4 q^{4} + 2 \beta q^{6} + 8 q^{8} - 23 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + 2 q^{2} + \beta q^{3} + 4 q^{4} + 2 \beta q^{6} + 8 q^{8} - 23 q^{9} - 3 \beta q^{11} + 4 \beta q^{12} + 16 q^{16} + (3 \beta - 1) q^{17} - 46 q^{18} + 34 q^{19} - 6 \beta q^{22} + 8 \beta q^{24} - 25 q^{25} - 14 \beta q^{27} + 32 q^{32} + 96 q^{33} + (6 \beta - 2) q^{34} - 92 q^{36} + 68 q^{38} - 12 \beta q^{41} + 14 q^{43} - 12 \beta q^{44} + 16 \beta q^{48} - 49 q^{49} - 50 q^{50} + ( - \beta - 96) q^{51} - 28 \beta q^{54} + 34 \beta q^{57} - 82 q^{59} + 64 q^{64} + 192 q^{66} - 62 q^{67} + (12 \beta - 4) q^{68} - 184 q^{72} + 6 \beta q^{73} - 25 \beta q^{75} + 136 q^{76} + 241 q^{81} - 24 \beta q^{82} + 158 q^{83} + 28 q^{86} - 24 \beta q^{88} - 146 q^{89} + 32 \beta q^{96} + 30 \beta q^{97} - 98 q^{98} + 69 \beta q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 4 q^{2} + 8 q^{4} + 16 q^{8} - 46 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 4 q^{2} + 8 q^{4} + 16 q^{8} - 46 q^{9} + 32 q^{16} - 2 q^{17} - 92 q^{18} + 68 q^{19} - 50 q^{25} + 64 q^{32} + 192 q^{33} - 4 q^{34} - 184 q^{36} + 136 q^{38} + 28 q^{43} - 98 q^{49} - 100 q^{50} - 192 q^{51} - 164 q^{59} + 128 q^{64} + 384 q^{66} - 124 q^{67} - 8 q^{68} - 368 q^{72} + 272 q^{76} + 482 q^{81} + 316 q^{83} + 56 q^{86} - 292 q^{89} - 196 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/136\mathbb{Z}\right)^\times\).

\(n\) \(69\) \(103\) \(105\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
67.1
1.41421i
1.41421i
2.00000 5.65685i 4.00000 0 11.3137i 0 8.00000 −23.0000 0
67.2 2.00000 5.65685i 4.00000 0 11.3137i 0 8.00000 −23.0000 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
8.d odd 2 1 CM by \(\Q(\sqrt{-2}) \)
17.b even 2 1 inner
136.e odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 136.3.e.b 2
4.b odd 2 1 544.3.e.a 2
8.b even 2 1 544.3.e.a 2
8.d odd 2 1 CM 136.3.e.b 2
17.b even 2 1 inner 136.3.e.b 2
68.d odd 2 1 544.3.e.a 2
136.e odd 2 1 inner 136.3.e.b 2
136.h even 2 1 544.3.e.a 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
136.3.e.b 2 1.a even 1 1 trivial
136.3.e.b 2 8.d odd 2 1 CM
136.3.e.b 2 17.b even 2 1 inner
136.3.e.b 2 136.e odd 2 1 inner
544.3.e.a 2 4.b odd 2 1
544.3.e.a 2 8.b even 2 1
544.3.e.a 2 68.d odd 2 1
544.3.e.a 2 136.h even 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{3}^{\mathrm{new}}(136, [\chi])\):

\( T_{3}^{2} + 32 \) Copy content Toggle raw display
\( T_{5} \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T - 2)^{2} \) Copy content Toggle raw display
$3$ \( T^{2} + 32 \) Copy content Toggle raw display
$5$ \( T^{2} \) Copy content Toggle raw display
$7$ \( T^{2} \) Copy content Toggle raw display
$11$ \( T^{2} + 288 \) Copy content Toggle raw display
$13$ \( T^{2} \) Copy content Toggle raw display
$17$ \( T^{2} + 2T + 289 \) Copy content Toggle raw display
$19$ \( (T - 34)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} \) Copy content Toggle raw display
$29$ \( T^{2} \) Copy content Toggle raw display
$31$ \( T^{2} \) Copy content Toggle raw display
$37$ \( T^{2} \) Copy content Toggle raw display
$41$ \( T^{2} + 4608 \) Copy content Toggle raw display
$43$ \( (T - 14)^{2} \) Copy content Toggle raw display
$47$ \( T^{2} \) Copy content Toggle raw display
$53$ \( T^{2} \) Copy content Toggle raw display
$59$ \( (T + 82)^{2} \) Copy content Toggle raw display
$61$ \( T^{2} \) Copy content Toggle raw display
$67$ \( (T + 62)^{2} \) Copy content Toggle raw display
$71$ \( T^{2} \) Copy content Toggle raw display
$73$ \( T^{2} + 1152 \) Copy content Toggle raw display
$79$ \( T^{2} \) Copy content Toggle raw display
$83$ \( (T - 158)^{2} \) Copy content Toggle raw display
$89$ \( (T + 146)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} + 28800 \) Copy content Toggle raw display
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