Properties

Label 1248.2.bc.s
Level $1248$
Weight $2$
Character orbit 1248.bc
Analytic conductor $9.965$
Analytic rank $0$
Dimension $6$
CM no
Inner twists $2$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1248,2,Mod(31,1248)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1248, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([2, 0, 0, 3]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1248.31");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1248 = 2^{5} \cdot 3 \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1248.bc (of order \(4\), 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: \(9.96533017226\)
Analytic rank: \(0\)
Dimension: \(6\)
Relative dimension: \(3\) over \(\Q(i)\)
Coefficient field: 6.0.3182656.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{6} - 2x^{3} + 25x^{2} - 10x + 2 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{4} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{4}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{5}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_{3} q^{3} - \beta_{5} q^{5} + ( - \beta_{5} + \beta_{3} + \beta_{2} - 1) q^{7} - q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{3} q^{3} - \beta_{5} q^{5} + ( - \beta_{5} + \beta_{3} + \beta_{2} - 1) q^{7} - q^{9} - \beta_{2} q^{11} + ( - 3 \beta_{3} + 2) q^{13} - \beta_{4} q^{15} + ( - 2 \beta_{3} + \beta_{2} - \beta_1) q^{17} + ( - \beta_{4} + \beta_{3} + \beta_1 + 1) q^{19} + ( - \beta_{4} + \beta_{3} - \beta_1 + 1) q^{21} - 4 q^{23} + (\beta_{5} + \beta_{4} - 7 \beta_{3} + \cdots + \beta_1) q^{25}+ \cdots + \beta_{2} q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q + 2 q^{5} - 4 q^{7} - 6 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 6 q + 2 q^{5} - 4 q^{7} - 6 q^{9} + 12 q^{13} - 2 q^{15} + 4 q^{19} + 4 q^{21} - 24 q^{23} + 16 q^{29} - 4 q^{31} + 6 q^{37} - 18 q^{39} + 22 q^{41} - 2 q^{45} - 16 q^{47} - 12 q^{51} - 12 q^{53} + 4 q^{57} - 8 q^{59} + 20 q^{61} + 4 q^{63} - 2 q^{65} - 20 q^{67} - 24 q^{71} - 10 q^{73} - 38 q^{75} + 6 q^{81} - 8 q^{83} + 20 q^{85} - 34 q^{89} + 4 q^{91} - 4 q^{93} - 88 q^{95} + 14 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{6} - 2x^{3} + 25x^{2} - 10x + 2 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( 2\nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -5\nu^{5} - \nu^{4} - 25\nu^{3} + 5\nu^{2} - 124\nu + 50 ) / 62 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 25\nu^{5} + 5\nu^{4} + \nu^{3} - 25\nu^{2} + 620\nu - 126 ) / 124 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -19\nu^{5} - 10\nu^{4} - 2\nu^{3} + 50\nu^{2} - 465\nu + 4 ) / 31 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -37\nu^{5} + 5\nu^{4} + \nu^{3} + 99\nu^{2} - 930\nu + 370 ) / 62 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{5} + \beta_{4} + 6\beta_{3} ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -2\beta_{3} - 5\beta_{2} + 2 ) / 2 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 5\beta_{5} - 5\beta_{4} + \beta_{2} + \beta _1 - 30 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 2\beta_{4} + 16\beta_{3} - 25\beta _1 + 16 ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1248\mathbb{Z}\right)^\times\).

\(n\) \(703\) \(769\) \(833\) \(1093\)
\(\chi(n)\) \(-1\) \(-\beta_{3}\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
31.1
0.203364 + 0.203364i
1.46962 + 1.46962i
−1.67298 1.67298i
0.203364 0.203364i
1.46962 1.46962i
−1.67298 + 1.67298i
0 1.00000i 0 −2.91729 + 2.91729i 0 −3.51056 + 3.51056i 0 −1.00000 0
31.2 0 1.00000i 0 1.31955 1.31955i 0 3.25879 3.25879i 0 −1.00000 0
31.3 0 1.00000i 0 2.59774 2.59774i 0 −1.74823 + 1.74823i 0 −1.00000 0
1087.1 0 1.00000i 0 −2.91729 2.91729i 0 −3.51056 3.51056i 0 −1.00000 0
1087.2 0 1.00000i 0 1.31955 + 1.31955i 0 3.25879 + 3.25879i 0 −1.00000 0
1087.3 0 1.00000i 0 2.59774 + 2.59774i 0 −1.74823 1.74823i 0 −1.00000 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 31.3
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
52.f even 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1248.2.bc.s 6
4.b odd 2 1 1248.2.bc.t yes 6
13.d odd 4 1 1248.2.bc.t yes 6
52.f even 4 1 inner 1248.2.bc.s 6
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1248.2.bc.s 6 1.a even 1 1 trivial
1248.2.bc.s 6 52.f even 4 1 inner
1248.2.bc.t yes 6 4.b odd 2 1
1248.2.bc.t yes 6 13.d odd 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1248, [\chi])\):

\( T_{5}^{6} - 2T_{5}^{5} + 2T_{5}^{4} - 8T_{5}^{3} + 256T_{5}^{2} - 640T_{5} + 800 \) Copy content Toggle raw display
\( T_{7}^{6} + 4T_{7}^{5} + 8T_{7}^{4} - 8T_{7}^{3} + 484T_{7}^{2} + 1760T_{7} + 3200 \) Copy content Toggle raw display
\( T_{11}^{6} + 16T_{11}^{3} + 400T_{11}^{2} + 320T_{11} + 128 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{6} \) Copy content Toggle raw display
$3$ \( (T^{2} + 1)^{3} \) Copy content Toggle raw display
$5$ \( T^{6} - 2 T^{5} + \cdots + 800 \) Copy content Toggle raw display
$7$ \( T^{6} + 4 T^{5} + \cdots + 3200 \) Copy content Toggle raw display
$11$ \( T^{6} + 16 T^{3} + \cdots + 128 \) Copy content Toggle raw display
$13$ \( (T^{2} - 4 T + 13)^{3} \) Copy content Toggle raw display
$17$ \( T^{6} + 92 T^{4} + \cdots + 10816 \) Copy content Toggle raw display
$19$ \( T^{6} - 4 T^{5} + \cdots + 25088 \) Copy content Toggle raw display
$23$ \( (T + 4)^{6} \) Copy content Toggle raw display
$29$ \( (T^{3} - 8 T^{2} + \cdots + 128)^{2} \) Copy content Toggle raw display
$31$ \( T^{6} + 4 T^{5} + \cdots + 25088 \) Copy content Toggle raw display
$37$ \( T^{6} - 6 T^{5} + \cdots + 40328 \) Copy content Toggle raw display
$41$ \( T^{6} - 22 T^{5} + \cdots + 199712 \) Copy content Toggle raw display
$43$ \( T^{6} \) Copy content Toggle raw display
$47$ \( T^{6} + 16 T^{5} + \cdots + 80000 \) Copy content Toggle raw display
$53$ \( (T^{3} + 6 T^{2} - 28 T - 40)^{2} \) Copy content Toggle raw display
$59$ \( T^{6} + 8 T^{5} + \cdots + 128 \) Copy content Toggle raw display
$61$ \( (T^{3} - 10 T^{2} + \cdots + 224)^{2} \) Copy content Toggle raw display
$67$ \( T^{6} + 20 T^{5} + \cdots + 512 \) Copy content Toggle raw display
$71$ \( T^{6} + 24 T^{5} + \cdots + 3200 \) Copy content Toggle raw display
$73$ \( T^{6} + 10 T^{5} + \cdots + 95048 \) Copy content Toggle raw display
$79$ \( T^{6} + 352 T^{4} + \cdots + 1048576 \) Copy content Toggle raw display
$83$ \( T^{6} + 8 T^{5} + \cdots + 1465472 \) Copy content Toggle raw display
$89$ \( T^{6} + 34 T^{5} + \cdots + 161312 \) Copy content Toggle raw display
$97$ \( T^{6} - 14 T^{5} + \cdots + 2535752 \) Copy content Toggle raw display
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