Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [672,2,Mod(85,672)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(672, base_ring=CyclotomicField(8))
chi = DirichletCharacter(H, H._module([0, 5, 0, 0]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("672.85");
S:= CuspForms(chi, 2);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 672 = 2^{5} \cdot 3 \cdot 7 \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 672.bq (of order \(8\), degree \(4\), 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: | \(5.36594701583\) |
Analytic rank: | \(0\) |
Dimension: | \(88\) |
Relative dimension: | \(22\) over \(\Q(\zeta_{8})\) |
Twist minimal: | yes |
Sato-Tate group: | $\mathrm{SU}(2)[C_{8}]$ |
$q$-expansion
The dimension is sufficiently large that we do not compute an algebraic \(q\)-expansion, but we have computed the trace expansion.
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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
85.1 | −1.40986 | − | 0.110884i | 0.923880 | − | 0.382683i | 1.97541 | + | 0.312662i | 1.27699 | − | 3.08292i | −1.34497 | + | 0.437086i | 0.707107 | + | 0.707107i | −2.75038 | − | 0.659851i | 0.707107 | − | 0.707107i | −2.14222 | + | 4.20489i |
85.2 | −1.34974 | − | 0.422149i | 0.923880 | − | 0.382683i | 1.64358 | + | 1.13958i | −0.114905 | + | 0.277405i | −1.40854 | + | 0.126507i | 0.707107 | + | 0.707107i | −1.73733 | − | 2.23197i | 0.707107 | − | 0.707107i | 0.272198 | − | 0.325917i |
85.3 | −1.34748 | − | 0.429300i | −0.923880 | + | 0.382683i | 1.63140 | + | 1.15695i | −0.539762 | + | 1.30310i | 1.40919 | − | 0.119037i | 0.707107 | + | 0.707107i | −1.70161 | − | 2.25932i | 0.707107 | − | 0.707107i | 1.28674 | − | 1.52418i |
85.4 | −1.29697 | + | 0.563801i | 0.923880 | − | 0.382683i | 1.36426 | − | 1.46247i | −0.926545 | + | 2.23688i | −0.982485 | + | 1.01721i | 0.707107 | + | 0.707107i | −0.944857 | + | 2.66594i | 0.707107 | − | 0.707107i | −0.0594548 | − | 3.42355i |
85.5 | −1.29196 | + | 0.575184i | −0.923880 | + | 0.382683i | 1.33833 | − | 1.48623i | −1.23125 | + | 2.97249i | 0.973503 | − | 1.02581i | 0.707107 | + | 0.707107i | −0.874208 | + | 2.68994i | 0.707107 | − | 0.707107i | −0.119009 | − | 4.54854i |
85.6 | −1.03192 | + | 0.967030i | −0.923880 | + | 0.382683i | 0.129704 | − | 1.99579i | 0.416627 | − | 1.00583i | 0.583300 | − | 1.28832i | 0.707107 | + | 0.707107i | 1.79615 | + | 2.18492i | 0.707107 | − | 0.707107i | 0.542741 | + | 1.44082i |
85.7 | −0.555555 | + | 1.30052i | 0.923880 | − | 0.382683i | −1.38272 | − | 1.44502i | 1.20358 | − | 2.90570i | −0.0155775 | + | 1.41413i | 0.707107 | + | 0.707107i | 2.64746 | − | 0.995465i | 0.707107 | − | 0.707107i | 3.11028 | + | 3.17956i |
85.8 | −0.546523 | + | 1.30434i | −0.923880 | + | 0.382683i | −1.40262 | − | 1.42571i | −0.297269 | + | 0.717672i | 0.00577093 | − | 1.41420i | 0.707107 | + | 0.707107i | 2.62618 | − | 1.05032i | 0.707107 | − | 0.707107i | −0.773626 | − | 0.779966i |
85.9 | −0.362626 | − | 1.36693i | 0.923880 | − | 0.382683i | −1.73700 | + | 0.991370i | −0.365809 | + | 0.883142i | −0.858125 | − | 1.12411i | 0.707107 | + | 0.707107i | 1.98502 | + | 2.01487i | 0.707107 | − | 0.707107i | 1.33985 | + | 0.179786i |
85.10 | −0.0821252 | − | 1.41183i | −0.923880 | + | 0.382683i | −1.98651 | + | 0.231893i | 0.384692 | − | 0.928730i | 0.616157 | + | 1.27293i | 0.707107 | + | 0.707107i | 0.490536 | + | 2.78557i | 0.707107 | − | 0.707107i | −1.34280 | − | 0.466847i |
85.11 | 0.121825 | + | 1.40896i | 0.923880 | − | 0.382683i | −1.97032 | + | 0.343294i | −0.154083 | + | 0.371989i | 0.651736 | + | 1.25509i | 0.707107 | + | 0.707107i | −0.723721 | − | 2.73427i | 0.707107 | − | 0.707107i | −0.542887 | − | 0.171778i |
85.12 | 0.164290 | − | 1.40464i | 0.923880 | − | 0.382683i | −1.94602 | − | 0.461537i | 0.779541 | − | 1.88198i | −0.385747 | − | 1.36059i | 0.707107 | + | 0.707107i | −0.968004 | + | 2.65762i | 0.707107 | − | 0.707107i | −2.51543 | − | 1.40416i |
85.13 | 0.407220 | + | 1.35432i | −0.923880 | + | 0.382683i | −1.66834 | + | 1.10301i | 0.905119 | − | 2.18515i | −0.894497 | − | 1.09539i | 0.707107 | + | 0.707107i | −2.17321 | − | 1.81030i | 0.707107 | − | 0.707107i | 3.32797 | + | 0.335980i |
85.14 | 0.486478 | − | 1.32791i | −0.923880 | + | 0.382683i | −1.52668 | − | 1.29200i | −0.326981 | + | 0.789403i | 0.0587215 | + | 1.41299i | 0.707107 | + | 0.707107i | −2.45835 | + | 1.39876i | 0.707107 | − | 0.707107i | 0.889185 | + | 0.818228i |
85.15 | 0.969047 | + | 1.03002i | −0.923880 | + | 0.382683i | −0.121894 | + | 1.99628i | 0.745636 | − | 1.80013i | −1.28946 | − | 0.580779i | 0.707107 | + | 0.707107i | −2.17434 | + | 1.80894i | 0.707107 | − | 0.707107i | 2.57673 | − | 0.976384i |
85.16 | 0.981441 | − | 1.01822i | −0.923880 | + | 0.382683i | −0.0735455 | − | 1.99865i | 1.24338 | − | 3.00179i | −0.517078 | + | 1.31629i | 0.707107 | + | 0.707107i | −2.10724 | − | 1.88667i | 0.707107 | − | 0.707107i | −1.83618 | − | 4.21212i |
85.17 | 1.15096 | + | 0.821762i | −0.923880 | + | 0.382683i | 0.649415 | + | 1.89163i | −1.43636 | + | 3.46767i | −1.37782 | − | 0.318756i | 0.707107 | + | 0.707107i | −0.807018 | + | 2.71085i | 0.707107 | − | 0.707107i | −4.50278 | + | 2.81080i |
85.18 | 1.16190 | − | 0.806219i | 0.923880 | − | 0.382683i | 0.700021 | − | 1.87349i | −1.40234 | + | 3.38554i | 0.764929 | − | 1.18949i | 0.707107 | + | 0.707107i | −0.697090 | − | 2.74118i | 0.707107 | − | 0.707107i | 1.10011 | + | 5.06425i |
85.19 | 1.20604 | + | 0.738558i | 0.923880 | − | 0.382683i | 0.909063 | + | 1.78146i | 1.16799 | − | 2.81978i | 1.39687 | + | 0.220808i | 0.707107 | + | 0.707107i | −0.219348 | + | 2.81991i | 0.707107 | − | 0.707107i | 3.49121 | − | 2.53813i |
85.20 | 1.30043 | − | 0.555768i | 0.923880 | − | 0.382683i | 1.38224 | − | 1.44548i | 0.538691 | − | 1.30051i | 0.988759 | − | 1.01112i | 0.707107 | + | 0.707107i | 0.994163 | − | 2.64795i | 0.707107 | − | 0.707107i | −0.0222541 | − | 1.99062i |
See all 88 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
32.g | even | 8 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 672.2.bq.a | ✓ | 88 |
32.g | even | 8 | 1 | inner | 672.2.bq.a | ✓ | 88 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
672.2.bq.a | ✓ | 88 | 1.a | even | 1 | 1 | trivial |
672.2.bq.a | ✓ | 88 | 32.g | even | 8 | 1 | inner |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{88} - 16 T_{5}^{83} + 832 T_{5}^{82} - 10800 T_{5}^{81} + 90560 T_{5}^{80} - 145696 T_{5}^{79} + \cdots + 1638400000000 \) acting on \(S_{2}^{\mathrm{new}}(672, [\chi])\).