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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [294,4,Mod(67,294)] 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("294.67"); S:= CuspForms(chi, 4); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(294, base_ring=CyclotomicField(6)) chi = DirichletCharacter(H, H._module([0, 4])) N = Newforms(chi, 4, names="a")
 
Level: \( N \) \(=\) \( 294 = 2 \cdot 3 \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 294.e (of order \(3\), degree \(2\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [2,2,3,-4,8,12,0,-16,-9,-16,-40] 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: \(17.3465615417\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-3}) \)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
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 primitive root of unity \(\zeta_{6}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 2 \zeta_{6} q^{2} + ( - 3 \zeta_{6} + 3) q^{3} + (4 \zeta_{6} - 4) q^{4} + 8 \zeta_{6} q^{5} + 6 q^{6} - 8 q^{8} - 9 \zeta_{6} q^{9} + (16 \zeta_{6} - 16) q^{10} + (40 \zeta_{6} - 40) q^{11} + 12 \zeta_{6} q^{12} + \cdots + 360 q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 2 q^{2} + 3 q^{3} - 4 q^{4} + 8 q^{5} + 12 q^{6} - 16 q^{8} - 9 q^{9} - 16 q^{10} - 40 q^{11} + 12 q^{12} - 8 q^{13} + 48 q^{15} - 16 q^{16} - 84 q^{17} + 18 q^{18} + 148 q^{19} - 64 q^{20} - 160 q^{22}+ \cdots + 720 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/294\mathbb{Z}\right)^\times\).

\(n\) \(197\) \(199\)
\(\chi(n)\) \(1\) \(-\zeta_{6}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
67.1
0.500000 + 0.866025i
0.500000 0.866025i
1.00000 + 1.73205i 1.50000 2.59808i −2.00000 + 3.46410i 4.00000 + 6.92820i 6.00000 0 −8.00000 −4.50000 7.79423i −8.00000 + 13.8564i
79.1 1.00000 1.73205i 1.50000 + 2.59808i −2.00000 3.46410i 4.00000 6.92820i 6.00000 0 −8.00000 −4.50000 + 7.79423i −8.00000 13.8564i
\(n\): 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 294.4.e.j 2
3.b odd 2 1 882.4.g.c 2
7.b odd 2 1 294.4.e.f 2
7.c even 3 1 294.4.a.b 1
7.c even 3 1 inner 294.4.e.j 2
7.d odd 6 1 294.4.a.f yes 1
7.d odd 6 1 294.4.e.f 2
21.c even 2 1 882.4.g.j 2
21.g even 6 1 882.4.a.j 1
21.g even 6 1 882.4.g.j 2
21.h odd 6 1 882.4.a.q 1
21.h odd 6 1 882.4.g.c 2
28.f even 6 1 2352.4.a.m 1
28.g odd 6 1 2352.4.a.z 1
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
294.4.a.b 1 7.c even 3 1
294.4.a.f yes 1 7.d odd 6 1
294.4.e.f 2 7.b odd 2 1
294.4.e.f 2 7.d odd 6 1
294.4.e.j 2 1.a even 1 1 trivial
294.4.e.j 2 7.c even 3 1 inner
882.4.a.j 1 21.g even 6 1
882.4.a.q 1 21.h odd 6 1
882.4.g.c 2 3.b odd 2 1
882.4.g.c 2 21.h odd 6 1
882.4.g.j 2 21.c even 2 1
882.4.g.j 2 21.g even 6 1
2352.4.a.m 1 28.f even 6 1
2352.4.a.z 1 28.g odd 6 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(294, [\chi])\):

\( T_{5}^{2} - 8T_{5} + 64 \) Copy content Toggle raw display
\( T_{11}^{2} + 40T_{11} + 1600 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} - 2T + 4 \) Copy content Toggle raw display
$3$ \( T^{2} - 3T + 9 \) Copy content Toggle raw display
$5$ \( T^{2} - 8T + 64 \) Copy content Toggle raw display
$7$ \( T^{2} \) Copy content Toggle raw display
$11$ \( T^{2} + 40T + 1600 \) Copy content Toggle raw display
$13$ \( (T + 4)^{2} \) Copy content Toggle raw display
$17$ \( T^{2} + 84T + 7056 \) Copy content Toggle raw display
$19$ \( T^{2} - 148T + 21904 \) Copy content Toggle raw display
$23$ \( T^{2} + 84T + 7056 \) Copy content Toggle raw display
$29$ \( (T - 58)^{2} \) Copy content Toggle raw display
$31$ \( T^{2} + 136T + 18496 \) Copy content Toggle raw display
$37$ \( T^{2} - 222T + 49284 \) Copy content Toggle raw display
$41$ \( (T + 420)^{2} \) Copy content Toggle raw display
$43$ \( (T + 164)^{2} \) Copy content Toggle raw display
$47$ \( T^{2} - 488T + 238144 \) Copy content Toggle raw display
$53$ \( T^{2} + 478T + 228484 \) Copy content Toggle raw display
$59$ \( T^{2} - 548T + 300304 \) Copy content Toggle raw display
$61$ \( T^{2} - 692T + 478864 \) Copy content Toggle raw display
$67$ \( T^{2} - 908T + 824464 \) Copy content Toggle raw display
$71$ \( (T + 524)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} - 440T + 193600 \) Copy content Toggle raw display
$79$ \( T^{2} + 1216 T + 1478656 \) Copy content Toggle raw display
$83$ \( (T - 684)^{2} \) Copy content Toggle raw display
$89$ \( T^{2} - 604T + 364816 \) Copy content Toggle raw display
$97$ \( (T - 832)^{2} \) Copy content Toggle raw display
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