Properties

Label 336.3.o.h
Level $336$
Weight $3$
Character orbit 336.o
Analytic conductor $9.155$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $8$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [336,3,Mod(335,336)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(336, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 0, 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("336.335");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 336 = 2^{4} \cdot 3 \cdot 7 \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 336.o (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: \(9.15533688251\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.186606965293056.87
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 4x^{6} - 65x^{4} + 324x^{2} + 6561 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{4} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-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 a basis \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_1 q^{3} + ( - \beta_{6} + \beta_{4}) q^{5} + ( - \beta_{3} - 3 \beta_{2} + \beta_1) q^{7} + (\beta_{7} + 2) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_1 q^{3} + ( - \beta_{6} + \beta_{4}) q^{5} + ( - \beta_{3} - 3 \beta_{2} + \beta_1) q^{7} + (\beta_{7} + 2) q^{9} + (\beta_{6} + \beta_{4}) q^{13} + ( - \beta_{5} - 7 \beta_{2}) q^{15} + ( - 2 \beta_{6} + 2 \beta_{4}) q^{17} + ( - 5 \beta_{3} + 5 \beta_1) q^{19} + ( - \beta_{7} + 3 \beta_{6} - 11) q^{21} - 2 \beta_{5} q^{23} + 17 q^{25} + ( - 9 \beta_{3} - 4 \beta_1) q^{27} - 6 \beta_{7} q^{29} + ( - 4 \beta_{3} + 4 \beta_1) q^{31} + (2 \beta_{5} - 9 \beta_{3} - 9 \beta_1) q^{35} + 58 q^{37} + (\beta_{5} - 11 \beta_{2}) q^{39} + (2 \beta_{6} - 2 \beta_{4}) q^{41} - 20 \beta_{2} q^{43} + (5 \beta_{6} + 9 \beta_{4}) q^{45} + ( - 6 \beta_{3} - 6 \beta_1) q^{47} + ( - 6 \beta_{6} - 6 \beta_{4} - 5) q^{49} + ( - 2 \beta_{5} - 14 \beta_{2}) q^{51} + 6 \beta_{7} q^{53} + ( - 5 \beta_{7} - 55) q^{57} + ( - 3 \beta_{3} - 3 \beta_1) q^{59} + ( - 7 \beta_{6} - 7 \beta_{4}) q^{61} + (3 \beta_{5} + 9 \beta_{3} + \cdots + 13 \beta_1) q^{63}+ \cdots + ( - 14 \beta_{6} - 14 \beta_{4}) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 16 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 16 q^{9} - 88 q^{21} + 136 q^{25} + 464 q^{37} - 40 q^{49} - 440 q^{57} - 584 q^{81} + 672 q^{85} - 352 q^{93}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 4x^{6} - 65x^{4} + 324x^{2} + 6561 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 16\nu^{7} - 260\nu^{5} + 4225\nu^{3} + 26244\nu ) / 47385 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -8\nu^{6} + 130\nu^{4} + 520\nu^{2} - 7857 ) / 5265 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -4\nu^{7} + 65\nu^{5} + 260\nu^{3} - 6561\nu ) / 5265 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -4\nu^{7} + 65\nu^{5} + 260\nu^{3} + 3969\nu ) / 5265 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{6} - 4\nu^{4} + 146\nu^{2} - 162 ) / 81 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 146\nu^{7} + 260\nu^{5} - 4225\nu^{3} + 68364\nu ) / 47385 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( \nu^{6} + 454 ) / 65 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{4} - \beta_{3} ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{7} + \beta_{5} + 2\beta_{2} - 2 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( 4\beta_{3} + 9\beta_1 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 4\beta_{7} - 4\beta_{5} + 73\beta_{2} + 73 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 36\beta_{6} + 65\beta_{4} + 65\beta_{3} - 36\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( 65\beta_{7} - 454 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 585\beta_{6} - 584\beta_{4} + 584\beta_{3} + 585\beta_1 ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/336\mathbb{Z}\right)^\times\).

\(n\) \(85\) \(113\) \(127\) \(241\)
\(\chi(n)\) \(1\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
335.1
−0.447581 2.96642i
2.79279 + 1.09560i
−0.447581 + 2.96642i
2.79279 1.09560i
−2.79279 + 1.09560i
0.447581 2.96642i
−2.79279 1.09560i
0.447581 + 2.96642i
0 −2.34521 1.87083i 0 −6.48074 0 4.69042 + 5.19615i 0 2.00000 + 8.77496i 0
335.2 0 −2.34521 1.87083i 0 6.48074 0 4.69042 5.19615i 0 2.00000 + 8.77496i 0
335.3 0 −2.34521 + 1.87083i 0 −6.48074 0 4.69042 5.19615i 0 2.00000 8.77496i 0
335.4 0 −2.34521 + 1.87083i 0 6.48074 0 4.69042 + 5.19615i 0 2.00000 8.77496i 0
335.5 0 2.34521 1.87083i 0 −6.48074 0 −4.69042 + 5.19615i 0 2.00000 8.77496i 0
335.6 0 2.34521 1.87083i 0 6.48074 0 −4.69042 5.19615i 0 2.00000 8.77496i 0
335.7 0 2.34521 + 1.87083i 0 −6.48074 0 −4.69042 5.19615i 0 2.00000 + 8.77496i 0
335.8 0 2.34521 + 1.87083i 0 6.48074 0 −4.69042 + 5.19615i 0 2.00000 + 8.77496i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 335.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
4.b odd 2 1 inner
7.b odd 2 1 inner
12.b even 2 1 inner
21.c even 2 1 inner
28.d even 2 1 inner
84.h odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 336.3.o.h 8
3.b odd 2 1 inner 336.3.o.h 8
4.b odd 2 1 inner 336.3.o.h 8
7.b odd 2 1 inner 336.3.o.h 8
12.b even 2 1 inner 336.3.o.h 8
21.c even 2 1 inner 336.3.o.h 8
28.d even 2 1 inner 336.3.o.h 8
84.h odd 2 1 inner 336.3.o.h 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
336.3.o.h 8 1.a even 1 1 trivial
336.3.o.h 8 3.b odd 2 1 inner
336.3.o.h 8 4.b odd 2 1 inner
336.3.o.h 8 7.b odd 2 1 inner
336.3.o.h 8 12.b even 2 1 inner
336.3.o.h 8 21.c even 2 1 inner
336.3.o.h 8 28.d even 2 1 inner
336.3.o.h 8 84.h odd 2 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{3}^{\mathrm{new}}(336, [\chi])\):

\( T_{5}^{2} - 42 \) Copy content Toggle raw display
\( T_{19}^{2} - 550 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( (T^{4} - 4 T^{2} + 81)^{2} \) Copy content Toggle raw display
$5$ \( (T^{2} - 42)^{4} \) Copy content Toggle raw display
$7$ \( (T^{4} + 10 T^{2} + 2401)^{2} \) Copy content Toggle raw display
$11$ \( T^{8} \) Copy content Toggle raw display
$13$ \( (T^{2} + 66)^{4} \) Copy content Toggle raw display
$17$ \( (T^{2} - 168)^{4} \) Copy content Toggle raw display
$19$ \( (T^{2} - 550)^{4} \) Copy content Toggle raw display
$23$ \( (T^{2} - 924)^{4} \) Copy content Toggle raw display
$29$ \( (T^{2} + 2772)^{4} \) Copy content Toggle raw display
$31$ \( (T^{2} - 352)^{4} \) Copy content Toggle raw display
$37$ \( (T - 58)^{8} \) Copy content Toggle raw display
$41$ \( (T^{2} - 168)^{4} \) Copy content Toggle raw display
$43$ \( (T^{2} + 1200)^{4} \) Copy content Toggle raw display
$47$ \( (T^{2} + 504)^{4} \) Copy content Toggle raw display
$53$ \( (T^{2} + 2772)^{4} \) Copy content Toggle raw display
$59$ \( (T^{2} + 126)^{4} \) Copy content Toggle raw display
$61$ \( (T^{2} + 3234)^{4} \) Copy content Toggle raw display
$67$ \( (T^{2} + 3072)^{4} \) Copy content Toggle raw display
$71$ \( (T^{2} - 14784)^{4} \) Copy content Toggle raw display
$73$ \( (T^{2} + 1056)^{4} \) Copy content Toggle raw display
$79$ \( (T^{2} + 10092)^{4} \) Copy content Toggle raw display
$83$ \( (T^{2} + 21294)^{4} \) Copy content Toggle raw display
$89$ \( (T^{2} - 24192)^{4} \) Copy content Toggle raw display
$97$ \( (T^{2} + 12936)^{4} \) Copy content Toggle raw display
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