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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [2070,2,Mod(1,2070)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)
 
Copy content magma:// Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("2070.1"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(2070, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 0])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 2070 = 2 \cdot 3^{2} \cdot 5 \cdot 23 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2070.a (trivial)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [3,-3,0,3,3,0,3,-3,0,-3,-3,0,-1] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(13)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: yes
Analytic conductor: \(16.5290332184\)
Analytic rank: \(0\)
Dimension: \(3\)
Coefficient field: 3.3.1101.1
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{3} - x^{2} - 9x + 12 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 230)
Fricke sign: \(-1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-expansion

Copy content comment:q-expansion
 
Copy content sage:f.q_expansion() # note that sage often uses an isomorphic number field
 
Copy content gp:mfcoefs(f, 20)
 

Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\beta_2\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - q^{2} + q^{4} + q^{5} + ( - \beta_{2} - \beta_1 + 1) q^{7} - q^{8} - q^{10} + ( - 2 \beta_{2} + \beta_1 - 2) q^{11} + ( - \beta_{2} + \beta_1 - 1) q^{13} + (\beta_{2} + \beta_1 - 1) q^{14} + q^{16}+ \cdots + ( - 2 \beta_{2} + \beta_1 - 11) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q - 3 q^{2} + 3 q^{4} + 3 q^{5} + 3 q^{7} - 3 q^{8} - 3 q^{10} - 3 q^{11} - q^{13} - 3 q^{14} + 3 q^{16} + 7 q^{17} + 3 q^{19} + 3 q^{20} + 3 q^{22} + 3 q^{23} + 3 q^{25} + q^{26} + 3 q^{28} + 4 q^{29}+ \cdots - 30 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{3} - x^{2} - 9x + 12 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{2} + \nu - 7 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{2} - \beta _1 + 7 \) Copy content Toggle raw display

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.

Copy content comment:embeddings in the coefficient field
 
Copy content gp:mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
2.68740
1.43163
−3.11903
−1.00000 0 1.00000 1.00000 0 −4.59692 −1.00000 0 −1.00000
1.2 −1.00000 0 1.00000 1.00000 0 3.08719 −1.00000 0 −1.00000
1.3 −1.00000 0 1.00000 1.00000 0 4.50973 −1.00000 0 −1.00000
\(n\): e.g. 2-40 or 80-90
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \( +1 \)
\(3\) \( -1 \)
\(5\) \( -1 \)
\(23\) \( -1 \)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2070.2.a.z 3
3.b odd 2 1 230.2.a.d 3
12.b even 2 1 1840.2.a.r 3
15.d odd 2 1 1150.2.a.q 3
15.e even 4 2 1150.2.b.j 6
24.f even 2 1 7360.2.a.ce 3
24.h odd 2 1 7360.2.a.bz 3
60.h even 2 1 9200.2.a.cf 3
69.c even 2 1 5290.2.a.r 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
230.2.a.d 3 3.b odd 2 1
1150.2.a.q 3 15.d odd 2 1
1150.2.b.j 6 15.e even 4 2
1840.2.a.r 3 12.b even 2 1
2070.2.a.z 3 1.a even 1 1 trivial
5290.2.a.r 3 69.c even 2 1
7360.2.a.bz 3 24.h odd 2 1
7360.2.a.ce 3 24.f even 2 1
9200.2.a.cf 3 60.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 \(S_{2}^{\mathrm{new}}(\Gamma_0(2070))\):

\( T_{7}^{3} - 3T_{7}^{2} - 21T_{7} + 64 \) Copy content Toggle raw display
\( T_{11}^{3} + 3T_{11}^{2} - 39T_{11} - 144 \) Copy content Toggle raw display
\( T_{13}^{3} + T_{13}^{2} - 15T_{13} - 18 \) Copy content Toggle raw display
\( T_{17}^{3} - 7T_{17}^{2} + 7T_{17} + 18 \) Copy content Toggle raw display
\( T_{29}^{3} - 4T_{29}^{2} - 32T_{29} - 24 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T + 1)^{3} \) Copy content Toggle raw display
$3$ \( T^{3} \) Copy content Toggle raw display
$5$ \( (T - 1)^{3} \) Copy content Toggle raw display
$7$ \( T^{3} - 3 T^{2} + \cdots + 64 \) Copy content Toggle raw display
$11$ \( T^{3} + 3 T^{2} + \cdots - 144 \) Copy content Toggle raw display
$13$ \( T^{3} + T^{2} + \cdots - 18 \) Copy content Toggle raw display
$17$ \( T^{3} - 7 T^{2} + \cdots + 18 \) Copy content Toggle raw display
$19$ \( T^{3} - 3 T^{2} + \cdots + 64 \) Copy content Toggle raw display
$23$ \( (T - 1)^{3} \) Copy content Toggle raw display
$29$ \( T^{3} - 4 T^{2} + \cdots - 24 \) Copy content Toggle raw display
$31$ \( T^{3} + 5 T^{2} + \cdots - 8 \) Copy content Toggle raw display
$37$ \( T^{3} + 2 T^{2} + \cdots - 32 \) Copy content Toggle raw display
$41$ \( T^{3} + T^{2} + \cdots - 186 \) Copy content Toggle raw display
$43$ \( (T - 8)^{3} \) Copy content Toggle raw display
$47$ \( T^{3} - 14 T^{2} + \cdots + 288 \) Copy content Toggle raw display
$53$ \( (T - 6)^{3} \) Copy content Toggle raw display
$59$ \( T^{3} + 14 T^{2} + \cdots - 144 \) Copy content Toggle raw display
$61$ \( T^{3} - T^{2} + \cdots + 526 \) Copy content Toggle raw display
$67$ \( T^{3} - 8 T^{2} + \cdots + 384 \) Copy content Toggle raw display
$71$ \( T^{3} + 11 T^{2} + \cdots + 24 \) Copy content Toggle raw display
$73$ \( T^{3} + 8 T^{2} + \cdots - 248 \) Copy content Toggle raw display
$79$ \( T^{3} + 4 T^{2} + \cdots - 1152 \) Copy content Toggle raw display
$83$ \( T^{3} + 8 T^{2} + \cdots - 96 \) Copy content Toggle raw display
$89$ \( T^{3} + 18 T^{2} + \cdots - 1152 \) Copy content Toggle raw display
$97$ \( T^{3} + 33 T^{2} + \cdots + 166 \) Copy content Toggle raw display
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