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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [1386,2,Mod(793,1386)] 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("1386.793"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(1386, base_ring=CyclotomicField(6)) chi = DirichletCharacter(H, H._module([0, 2, 0])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 1386 = 2 \cdot 3^{2} \cdot 7 \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1386.k (of order \(3\), degree \(2\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [6,3,0,-3,0,0,0,-6,0,0,3] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(11)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(11.0672657201\)
Analytic rank: \(0\)
Dimension: \(6\)
Relative dimension: \(3\) over \(\Q(\zeta_{3})\)
Coefficient field: 6.0.1156923.1
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{6} - 3x^{5} + 12x^{4} - 19x^{3} + 27x^{2} - 18x + 4 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: no (minimal twist has level 462)
Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

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

\(f(q)\) \(=\) \( q - \beta_{2} q^{2} + ( - \beta_{2} - 1) q^{4} + \beta_{4} q^{5} + (\beta_{5} - \beta_{4} + \beta_{3}) q^{7} - q^{8} + (\beta_{4} - \beta_1) q^{10} + (\beta_{2} + 1) q^{11} + 2 \beta_1 q^{13} + ( - \beta_{4} + \beta_{3} - 1) q^{14}+ \cdots + (\beta_{5} - 2 \beta_{4} + \cdots + 3 \beta_1) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q + 3 q^{2} - 3 q^{4} - 6 q^{8} + 3 q^{11} - 3 q^{14} - 3 q^{16} + 3 q^{17} + 3 q^{19} + 6 q^{22} + 9 q^{23} - 3 q^{25} - 3 q^{28} - 18 q^{29} - 6 q^{31} + 3 q^{32} + 6 q^{34} - 6 q^{35} - 9 q^{37} - 3 q^{38}+ \cdots - 15 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{6} - 3x^{5} + 12x^{4} - 19x^{3} + 27x^{2} - 18x + 4 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu^{2} - \nu + 3 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 2\nu^{5} - 5\nu^{4} + 22\nu^{3} - 28\nu^{2} + 43\nu - 18 ) / 2 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( -3\nu^{5} + 7\nu^{4} - 31\nu^{3} + 37\nu^{2} - 56\nu + 22 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -6\nu^{5} + 15\nu^{4} - 64\nu^{3} + 82\nu^{2} - 121\nu + 50 ) / 2 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( -3\nu^{5} + 8\nu^{4} - 33\nu^{3} + 44\nu^{2} - 62\nu + 24 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{5} - 2\beta_{4} + \beta_{3} + \beta _1 + 1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{5} - 2\beta_{4} + \beta_{3} + 3\beta _1 - 5 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -3\beta_{5} + 8\beta_{4} - 3\beta_{3} + 6\beta_{2} - \beta _1 - 5 ) / 2 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -5\beta_{5} + 18\beta_{4} - 9\beta_{3} + 12\beta_{2} - 17\beta _1 + 27 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 13\beta_{5} - 28\beta_{4} + 3\beta_{3} - 34\beta_{2} - 11\beta _1 + 49 ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1386\mathbb{Z}\right)^\times\).

\(n\) \(155\) \(199\) \(1135\)
\(\chi(n)\) \(1\) \(\beta_{2}\) \(1\)

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.

Copy content comment:embeddings in the coefficient field
 
Copy content gp:mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
793.1
0.500000 − 2.43956i
0.500000 + 1.51496i
0.500000 + 0.0585812i
0.500000 + 2.43956i
0.500000 − 1.51496i
0.500000 − 0.0585812i
0.500000 − 0.866025i 0 −0.500000 − 0.866025i −1.60074 + 2.77256i 0 1.60074 − 2.10657i −1.00000 0 1.60074 + 2.77256i
793.2 0.500000 − 0.866025i 0 −0.500000 − 0.866025i 0.227452 − 0.393958i 0 −0.227452 + 2.63596i −1.00000 0 −0.227452 − 0.393958i
793.3 0.500000 − 0.866025i 0 −0.500000 − 0.866025i 1.37328 − 2.37860i 0 −1.37328 − 2.26144i −1.00000 0 −1.37328 − 2.37860i
991.1 0.500000 + 0.866025i 0 −0.500000 + 0.866025i −1.60074 − 2.77256i 0 1.60074 + 2.10657i −1.00000 0 1.60074 − 2.77256i
991.2 0.500000 + 0.866025i 0 −0.500000 + 0.866025i 0.227452 + 0.393958i 0 −0.227452 − 2.63596i −1.00000 0 −0.227452 + 0.393958i
991.3 0.500000 + 0.866025i 0 −0.500000 + 0.866025i 1.37328 + 2.37860i 0 −1.37328 + 2.26144i −1.00000 0 −1.37328 + 2.37860i
\(n\): e.g. 2-40 or 80-90
Embeddings: e.g. 1-3 or 793.3
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.c even 3 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1386.2.k.w 6
3.b odd 2 1 462.2.i.f ✓ 6
7.c even 3 1 inner 1386.2.k.w 6
7.c even 3 1 9702.2.a.dt 3
7.d odd 6 1 9702.2.a.du 3
21.g even 6 1 3234.2.a.bg 3
21.h odd 6 1 462.2.i.f ✓ 6
21.h odd 6 1 3234.2.a.bi 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
462.2.i.f ✓ 6 3.b odd 2 1
462.2.i.f ✓ 6 21.h odd 6 1
1386.2.k.w 6 1.a even 1 1 trivial
1386.2.k.w 6 7.c even 3 1 inner
3234.2.a.bg 3 21.g even 6 1
3234.2.a.bi 3 21.h odd 6 1
9702.2.a.dt 3 7.c even 3 1
9702.2.a.du 3 7.d odd 6 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1386, [\chi])\):

\( T_{5}^{6} + 9T_{5}^{4} - 8T_{5}^{3} + 81T_{5}^{2} - 36T_{5} + 16 \) Copy content Toggle raw display
\( T_{13}^{3} - 36T_{13} + 32 \) Copy content Toggle raw display
\( T_{17}^{2} - T_{17} + 1 \) Copy content Toggle raw display
\( T_{23}^{6} - 9T_{23}^{5} + 78T_{23}^{4} - 69T_{23}^{3} + 198T_{23}^{2} + 63T_{23} + 441 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{2} - T + 1)^{3} \) Copy content Toggle raw display
$3$ \( T^{6} \) Copy content Toggle raw display
$5$ \( T^{6} + 9 T^{4} + \cdots + 16 \) Copy content Toggle raw display
$7$ \( T^{6} + 12 T^{4} + \cdots + 343 \) Copy content Toggle raw display
$11$ \( (T^{2} - T + 1)^{3} \) Copy content Toggle raw display
$13$ \( (T^{3} - 36 T + 32)^{2} \) Copy content Toggle raw display
$17$ \( (T^{2} - T + 1)^{3} \) Copy content Toggle raw display
$19$ \( T^{6} - 3 T^{5} + \cdots + 1296 \) Copy content Toggle raw display
$23$ \( T^{6} - 9 T^{5} + \cdots + 441 \) Copy content Toggle raw display
$29$ \( (T^{3} + 9 T^{2} - 92)^{2} \) Copy content Toggle raw display
$31$ \( T^{6} + 6 T^{5} + \cdots + 262144 \) Copy content Toggle raw display
$37$ \( T^{6} + 9 T^{5} + \cdots + 26896 \) Copy content Toggle raw display
$41$ \( (T^{3} + 12 T^{2} + \cdots - 82)^{2} \) Copy content Toggle raw display
$43$ \( (T^{3} - 9 T^{2} + \cdots + 164)^{2} \) Copy content Toggle raw display
$47$ \( T^{6} + 15 T^{5} + \cdots + 361 \) Copy content Toggle raw display
$53$ \( T^{6} + 36 T^{4} + \cdots + 1024 \) Copy content Toggle raw display
$59$ \( T^{6} - 9 T^{5} + \cdots + 589824 \) Copy content Toggle raw display
$61$ \( T^{6} - 6 T^{5} + \cdots + 51076 \) Copy content Toggle raw display
$67$ \( T^{6} + 6 T^{5} + \cdots + 7056 \) Copy content Toggle raw display
$71$ \( (T^{3} + 3 T^{2} - 24 T - 64)^{2} \) Copy content Toggle raw display
$73$ \( T^{6} + 96 T^{4} + \cdots + 36864 \) Copy content Toggle raw display
$79$ \( T^{6} + 12 T^{5} + \cdots + 135424 \) Copy content Toggle raw display
$83$ \( (T^{3} - 6 T^{2} + \cdots - 188)^{2} \) Copy content Toggle raw display
$89$ \( T^{6} + 36 T^{5} + \cdots + 1763584 \) Copy content Toggle raw display
$97$ \( (T^{3} - 9 T^{2} - 81 T - 7)^{2} \) Copy content Toggle raw display
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