Properties

Label 2100.2.bc.h
Level $2100$
Weight $2$
Character orbit 2100.bc
Analytic conductor $16.769$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2100,2,Mod(949,2100)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2100, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([0, 0, 3, 4]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2100.949");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2100 = 2^{2} \cdot 3 \cdot 5^{2} \cdot 7 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2100.bc (of order \(6\), degree \(2\), not 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: \(16.7685844245\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(4\) over \(\Q(\zeta_{6})\)
Coefficient field: 8.0.49787136.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 3x^{6} + 5x^{4} + 12x^{2} + 16 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{4} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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.

\(f(q)\) \(=\) \( q - \beta_{2} q^{3} - \beta_{6} q^{7} - \beta_{3} q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{2} q^{3} - \beta_{6} q^{7} - \beta_{3} q^{9} + (\beta_{7} + 3 \beta_{3} + 3) q^{11} + ( - \beta_{4} - \beta_{2}) q^{13} + ( - \beta_{6} - \beta_{2}) q^{17} + (\beta_{5} + 2 \beta_{3}) q^{19} + \beta_{5} q^{21} - 2 \beta_{4} q^{23} + ( - \beta_{4} - \beta_{2}) q^{27} + ( - 2 \beta_{7} + 2 \beta_{5} - 2) q^{29} + ( - 4 \beta_{3} - 4) q^{31} + (3 \beta_{4} - \beta_1) q^{33} + ( - 3 \beta_{4} + 2 \beta_1) q^{37} + ( - \beta_{3} - 1) q^{39} + (\beta_{7} - \beta_{5} - 3) q^{41} + ( - 2 \beta_{6} + 2 \beta_{4} + \cdots - 2 \beta_1) q^{43}+ \cdots + (\beta_{7} - \beta_{5} + 3) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 4 q^{9} + 12 q^{11} - 8 q^{19} - 16 q^{29} - 16 q^{31} - 4 q^{39} - 24 q^{41} + 28 q^{49} + 4 q^{51} + 28 q^{59} + 4 q^{61} - 16 q^{69} - 16 q^{71} - 16 q^{79} - 4 q^{81} - 4 q^{89} + 24 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 3x^{6} + 5x^{4} + 12x^{2} + 16 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{6} + 15\nu^{4} + 5\nu^{2} + 12 ) / 20 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{7} - 5\nu^{5} + 5\nu^{3} + 12\nu ) / 40 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -3\nu^{6} - 5\nu^{4} - 15\nu^{2} - 36 ) / 20 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -\nu^{7} - 7\nu ) / 10 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{7} + 13\nu ) / 10 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -9\nu^{6} - 15\nu^{4} - 5\nu^{2} - 48 ) / 20 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 11\nu^{7} + 25\nu^{5} + 55\nu^{3} + 132\nu ) / 40 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{5} - \beta_{4} ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{6} - 3\beta_{3} - 3 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( \beta_{7} - \beta_{5} + 5\beta_{4} + 5\beta_{2} ) / 2 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( \beta_{3} + 3\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( \beta_{7} - 11\beta_{2} ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -5\beta_{6} - 5\beta _1 - 9 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( -7\beta_{5} - 13\beta_{4} ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2100\mathbb{Z}\right)^\times\).

\(n\) \(701\) \(1051\) \(1177\) \(1501\)
\(\chi(n)\) \(1\) \(1\) \(-1\) \(\beta_{3}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
949.1
1.09445 + 0.895644i
−0.228425 1.39564i
−1.09445 0.895644i
0.228425 + 1.39564i
1.09445 0.895644i
−0.228425 + 1.39564i
−1.09445 + 0.895644i
0.228425 1.39564i
0 −0.866025 0.500000i 0 0 0 −2.29129 1.32288i 0 0.500000 + 0.866025i 0
949.2 0 −0.866025 0.500000i 0 0 0 2.29129 + 1.32288i 0 0.500000 + 0.866025i 0
949.3 0 0.866025 + 0.500000i 0 0 0 −2.29129 1.32288i 0 0.500000 + 0.866025i 0
949.4 0 0.866025 + 0.500000i 0 0 0 2.29129 + 1.32288i 0 0.500000 + 0.866025i 0
1549.1 0 −0.866025 + 0.500000i 0 0 0 −2.29129 + 1.32288i 0 0.500000 0.866025i 0
1549.2 0 −0.866025 + 0.500000i 0 0 0 2.29129 1.32288i 0 0.500000 0.866025i 0
1549.3 0 0.866025 0.500000i 0 0 0 −2.29129 + 1.32288i 0 0.500000 0.866025i 0
1549.4 0 0.866025 0.500000i 0 0 0 2.29129 1.32288i 0 0.500000 0.866025i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 949.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
5.b even 2 1 inner
7.c even 3 1 inner
35.j even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2100.2.bc.h 8
5.b even 2 1 inner 2100.2.bc.h 8
5.c odd 4 1 2100.2.q.g 4
5.c odd 4 1 2100.2.q.i yes 4
7.c even 3 1 inner 2100.2.bc.h 8
35.j even 6 1 inner 2100.2.bc.h 8
35.l odd 12 1 2100.2.q.g 4
35.l odd 12 1 2100.2.q.i yes 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2100.2.q.g 4 5.c odd 4 1
2100.2.q.g 4 35.l odd 12 1
2100.2.q.i yes 4 5.c odd 4 1
2100.2.q.i yes 4 35.l odd 12 1
2100.2.bc.h 8 1.a even 1 1 trivial
2100.2.bc.h 8 5.b even 2 1 inner
2100.2.bc.h 8 7.c even 3 1 inner
2100.2.bc.h 8 35.j even 6 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(2100, [\chi])\):

\( T_{11}^{4} - 6T_{11}^{3} + 34T_{11}^{2} - 12T_{11} + 4 \) Copy content Toggle raw display
\( T_{13}^{2} + 1 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( (T^{4} - T^{2} + 1)^{2} \) Copy content Toggle raw display
$5$ \( T^{8} \) Copy content Toggle raw display
$7$ \( (T^{4} - 7 T^{2} + 49)^{2} \) Copy content Toggle raw display
$11$ \( (T^{4} - 6 T^{3} + 34 T^{2} + \cdots + 4)^{2} \) Copy content Toggle raw display
$13$ \( (T^{2} + 1)^{4} \) Copy content Toggle raw display
$17$ \( T^{8} - 16 T^{6} + \cdots + 1296 \) Copy content Toggle raw display
$19$ \( (T^{4} + 4 T^{3} + 19 T^{2} + \cdots + 9)^{2} \) Copy content Toggle raw display
$23$ \( (T^{4} - 4 T^{2} + 16)^{2} \) Copy content Toggle raw display
$29$ \( (T^{2} + 4 T - 24)^{4} \) Copy content Toggle raw display
$31$ \( (T^{2} + 4 T + 16)^{4} \) Copy content Toggle raw display
$37$ \( T^{8} - 74 T^{6} + \cdots + 130321 \) Copy content Toggle raw display
$41$ \( (T^{2} + 6 T + 2)^{4} \) Copy content Toggle raw display
$43$ \( (T^{4} + 64 T^{2} + 576)^{2} \) Copy content Toggle raw display
$47$ \( T^{8} - 176 T^{6} + \cdots + 2085136 \) Copy content Toggle raw display
$53$ \( T^{8} - 64 T^{6} + \cdots + 104976 \) Copy content Toggle raw display
$59$ \( (T^{4} - 14 T^{3} + \cdots + 196)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} - 2 T^{3} + \cdots + 12321)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} - 63 T^{2} + 3969)^{2} \) Copy content Toggle raw display
$71$ \( (T^{2} + 4 T - 24)^{4} \) Copy content Toggle raw display
$73$ \( T^{8} - 58 T^{6} + \cdots + 531441 \) Copy content Toggle raw display
$79$ \( (T^{4} + 8 T^{3} + 55 T^{2} + \cdots + 81)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} + 16 T^{2} + 36)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} + 2 T^{3} + \cdots + 3844)^{2} \) Copy content Toggle raw display
$97$ \( (T^{4} + 218 T^{2} + 2809)^{2} \) Copy content Toggle raw display
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