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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [126,8,Mod(37,126)] 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("126.37"); S:= CuspForms(chi, 8); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(126, base_ring=CyclotomicField(6)) chi = DirichletCharacter(H, H._module([0, 2])) N = Newforms(chi, 8, names="a")
 
Level: \( N \) \(=\) \( 126 = 2 \cdot 3^{2} \cdot 7 \)
Weight: \( k \) \(=\) \( 8 \)
Character orbit: \([\chi]\) \(=\) 126.g (of order \(3\), degree \(2\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4,16,0,-128,-238] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(5)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(39.3605132110\)
Analytic rank: \(0\)
Dimension: \(4\)
Relative dimension: \(2\) over \(\Q(\zeta_{3})\)
Coefficient field: \(\Q(\sqrt{-3}, \sqrt{2389})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - x^{3} + 598x^{2} + 597x + 356409 \) 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 14)
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 \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - 8 \beta_1 + 8) q^{2} - 64 \beta_1 q^{4} + (2 \beta_{3} + 2 \beta_{2} + \cdots - 119) q^{5} + ( - 21 \beta_{3} - 14 \beta_{2} + \cdots + 14) q^{7} - 512 q^{8} + (16 \beta_{2} + 952 \beta_1) q^{10}+ \cdots + ( - 20384 \beta_{3} - 17248 \beta_{2} + \cdots - 2795352) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + 16 q^{2} - 128 q^{4} - 238 q^{5} + 168 q^{7} - 2048 q^{8} + 1904 q^{10} + 5848 q^{11} + 2632 q^{13} + 2016 q^{14} - 8192 q^{16} - 47642 q^{17} + 41048 q^{19} + 30464 q^{20} + 93568 q^{22} - 49316 q^{23}+ \cdots - 20499248 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} - x^{3} + 598x^{2} + 597x + 356409 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -\nu^{3} + 598\nu^{2} - 598\nu + 356409 ) / 357006 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{3} - 598\nu^{2} + 714610\nu - 356409 ) / 357006 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{3} + 896 ) / 299 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{2} + \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{3} + \beta_{2} + 1195\beta _1 - 1195 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( 299\beta_{3} - 896 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/126\mathbb{Z}\right)^\times\).

\(n\) \(29\) \(73\)
\(\chi(n)\) \(1\) \(-1 + \beta_{1}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
37.1
12.4693 + 21.5975i
−11.9693 − 20.7315i
12.4693 − 21.5975i
−11.9693 + 20.7315i
4.00000 − 6.92820i 0 −32.0000 − 55.4256i −108.377 + 187.715i 0 726.284 − 544.110i −512.000 0 867.019 + 1501.72i
37.2 4.00000 − 6.92820i 0 −32.0000 − 55.4256i −10.6226 + 18.3989i 0 −642.284 + 641.104i −512.000 0 84.9808 + 147.191i
109.1 4.00000 + 6.92820i 0 −32.0000 + 55.4256i −108.377 − 187.715i 0 726.284 + 544.110i −512.000 0 867.019 − 1501.72i
109.2 4.00000 + 6.92820i 0 −32.0000 + 55.4256i −10.6226 − 18.3989i 0 −642.284 − 641.104i −512.000 0 84.9808 − 147.191i
\(n\): e.g. 2-40 or 80-90
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 126.8.g.e 4
3.b odd 2 1 14.8.c.a ✓ 4
7.c even 3 1 inner 126.8.g.e 4
12.b even 2 1 112.8.i.a 4
21.c even 2 1 98.8.c.h 4
21.g even 6 1 98.8.a.k 2
21.g even 6 1 98.8.c.h 4
21.h odd 6 1 14.8.c.a ✓ 4
21.h odd 6 1 98.8.a.h 2
84.n even 6 1 112.8.i.a 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
14.8.c.a ✓ 4 3.b odd 2 1
14.8.c.a ✓ 4 21.h odd 6 1
98.8.a.h 2 21.h odd 6 1
98.8.a.k 2 21.g even 6 1
98.8.c.h 4 21.c even 2 1
98.8.c.h 4 21.g even 6 1
112.8.i.a 4 12.b even 2 1
112.8.i.a 4 84.n even 6 1
126.8.g.e 4 1.a even 1 1 trivial
126.8.g.e 4 7.c even 3 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{4} + 238T_{5}^{3} + 52039T_{5}^{2} + 1095990T_{5} + 21206025 \) acting on \(S_{8}^{\mathrm{new}}(126, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{2} - 8 T + 64)^{2} \) Copy content Toggle raw display
$3$ \( T^{4} \) Copy content Toggle raw display
$5$ \( T^{4} + 238 T^{3} + \cdots + 21206025 \) Copy content Toggle raw display
$7$ \( T^{4} + \cdots + 678223072849 \) Copy content Toggle raw display
$11$ \( T^{4} + \cdots + 71110682271225 \) Copy content Toggle raw display
$13$ \( (T^{2} - 1316 T - 91342860)^{2} \) Copy content Toggle raw display
$17$ \( T^{4} + \cdots + 16\!\cdots\!81 \) Copy content Toggle raw display
$19$ \( T^{4} + \cdots + 78\!\cdots\!25 \) Copy content Toggle raw display
$23$ \( T^{4} + \cdots + 12\!\cdots\!69 \) Copy content Toggle raw display
$29$ \( (T^{2} + 172820 T + 5666758164)^{2} \) Copy content Toggle raw display
$31$ \( T^{4} + \cdots + 74\!\cdots\!25 \) Copy content Toggle raw display
$37$ \( T^{4} + \cdots + 81\!\cdots\!29 \) Copy content Toggle raw display
$41$ \( (T^{2} - 1156260 T + 332194626036)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} - 57544 T - 154524293360)^{2} \) Copy content Toggle raw display
$47$ \( T^{4} + \cdots + 62\!\cdots\!81 \) Copy content Toggle raw display
$53$ \( T^{4} + \cdots + 19\!\cdots\!61 \) Copy content Toggle raw display
$59$ \( T^{4} + \cdots + 73\!\cdots\!29 \) Copy content Toggle raw display
$61$ \( T^{4} + \cdots + 32\!\cdots\!81 \) Copy content Toggle raw display
$67$ \( T^{4} + \cdots + 16\!\cdots\!61 \) Copy content Toggle raw display
$71$ \( (T^{2} + \cdots + 2760738723264)^{2} \) Copy content Toggle raw display
$73$ \( T^{4} + \cdots + 28\!\cdots\!25 \) Copy content Toggle raw display
$79$ \( T^{4} + \cdots + 43\!\cdots\!25 \) Copy content Toggle raw display
$83$ \( (T^{2} + \cdots - 11352739197744)^{2} \) Copy content Toggle raw display
$89$ \( T^{4} + \cdots + 24\!\cdots\!21 \) Copy content Toggle raw display
$97$ \( (T^{2} + \cdots + 6136617007220)^{2} \) Copy content Toggle raw display
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