Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [25,24,Mod(24,25)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(25, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([1]))
N = Newforms(chi, 24, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("25.24");
S:= CuspForms(chi, 24);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 25 = 5^{2} \) |
| Weight: | \( k \) | \(=\) | \( 24 \) |
| Character orbit: | \([\chi]\) | \(=\) | 25.b (of order \(2\), degree \(1\), not 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: | \(83.8010093363\) |
| Analytic rank: | \(0\) |
| Dimension: | \(6\) |
| Coefficient field: | \(\mathbb{Q}[x]/(x^{6} + \cdots)\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{6} + 431513x^{4} + 46587973048x^{2} + 348223814491536 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{13}]\) |
| Coefficient ring index: | \( 2^{9}\cdot 3^{6}\cdot 5^{8} \) |
| Twist minimal: | no (minimal twist has level 5) |
| Sato-Tate group: | $\mathrm{SU}(2)[C_{2}]$ |
$q$-expansion
comment: q-expansion
sage: f.q_expansion() # note that sage often uses an isomorphic number field
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.
Basis of coefficient ring in terms of a root \(\nu\) of
\( x^{6} + 431513x^{4} + 46587973048x^{2} + 348223814491536 \)
:
| \(\beta_{1}\) | \(=\) |
\( ( \nu^{5} - 18229243\nu^{3} + 64859928124756\nu ) / 11473254814000 \)
|
| \(\beta_{2}\) | \(=\) |
\( ( \nu^{5} - 18229243\nu^{3} - 3979600759244\nu ) / 1376790577680 \)
|
| \(\beta_{3}\) | \(=\) |
\( ( 3\nu^{4} + 647271\nu^{2} + 74427268 ) / 36890 \)
|
| \(\beta_{4}\) | \(=\) |
\( ( 69\nu^{4} + 25954233\nu^{2} + 1593563284164 ) / 1844500 \)
|
| \(\beta_{5}\) | \(=\) |
\( ( 20423\nu^{5} + 7333925086\nu^{3} + 583038848391413\nu ) / 126543251625 \)
|
| \(\nu\) | \(=\) |
\( ( -3\beta_{2} + 25\beta_1 ) / 150 \)
|
| \(\nu^{2}\) | \(=\) |
\( ( 50\beta_{4} - 23\beta_{3} - 43151300 ) / 300 \)
|
| \(\nu^{3}\) | \(=\) |
\( ( 50\beta_{5} - 10463231\beta_{2} - 5390675\beta_1 ) / 150 \)
|
| \(\nu^{4}\) | \(=\) |
\( ( -10787850\beta_{4} + 8651411\beta_{3} + 9302752307300 ) / 300 \)
|
| \(\nu^{5}\) | \(=\) |
\( ( 182292430\beta_{5} + 768600782027\beta_{2} + 244418894415\beta_1 ) / 30 \)
|
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/25\mathbb{Z}\right)^\times\).
| \(n\) | \(2\) |
| \(\chi(n)\) | \(-1\) |
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.
comment: embeddings in the coefficient field
gp: mfembed(f)
| Label | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 24.1 |
|
− | 2794.35i | 370647.i | 580214. | 0 | 1.03572e9 | 2.05641e9i | − | 2.50620e10i | −4.32361e10 | 0 | ||||||||||||||||||||||||||||||||||
| 24.2 | − | 2701.49i | − | 129352.i | 1.09056e6 | 0 | −3.49442e8 | − | 5.55505e9i | − | 2.56079e10i | 7.74113e10 | 0 | |||||||||||||||||||||||||||||||||
| 24.3 | − | 758.861i | 360571.i | 7.81274e6 | 0 | 2.73623e8 | 1.00441e10i | − | 1.22946e10i | −3.58682e10 | 0 | |||||||||||||||||||||||||||||||||||
| 24.4 | 758.861i | − | 360571.i | 7.81274e6 | 0 | 2.73623e8 | − | 1.00441e10i | 1.22946e10i | −3.58682e10 | 0 | |||||||||||||||||||||||||||||||||||
| 24.5 | 2701.49i | 129352.i | 1.09056e6 | 0 | −3.49442e8 | 5.55505e9i | 2.56079e10i | 7.74113e10 | 0 | |||||||||||||||||||||||||||||||||||||
| 24.6 | 2794.35i | − | 370647.i | 580214. | 0 | 1.03572e9 | − | 2.05641e9i | 2.50620e10i | −4.32361e10 | 0 | |||||||||||||||||||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 5.b | even | 2 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 25.24.b.b | 6 | |
| 5.b | even | 2 | 1 | inner | 25.24.b.b | 6 | |
| 5.c | odd | 4 | 1 | 5.24.a.a | ✓ | 3 | |
| 5.c | odd | 4 | 1 | 25.24.a.b | 3 | ||
| 15.e | even | 4 | 1 | 45.24.a.a | 3 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 5.24.a.a | ✓ | 3 | 5.c | odd | 4 | 1 | |
| 25.24.a.b | 3 | 5.c | odd | 4 | 1 | ||
| 25.24.b.b | 6 | 1.a | even | 1 | 1 | trivial | |
| 25.24.b.b | 6 | 5.b | even | 2 | 1 | inner | |
| 45.24.a.a | 3 | 15.e | even | 4 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{2}^{6} + 15682308T_{2}^{4} + 65685349087488T_{2}^{2} + 32816541925356077056 \)
acting on \(S_{24}^{\mathrm{new}}(25, [\chi])\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{6} + \cdots + 32\!\cdots\!56 \)
|
| $3$ |
\( T^{6} + \cdots + 29\!\cdots\!84 \)
|
| $5$ |
\( T^{6} \)
|
| $7$ |
\( T^{6} + \cdots + 13\!\cdots\!56 \)
|
| $11$ |
\( (T^{3} + \cdots + 10\!\cdots\!32)^{2} \)
|
| $13$ |
\( T^{6} + \cdots + 85\!\cdots\!24 \)
|
| $17$ |
\( T^{6} + \cdots + 28\!\cdots\!56 \)
|
| $19$ |
\( (T^{3} + \cdots + 15\!\cdots\!00)^{2} \)
|
| $23$ |
\( T^{6} + \cdots + 64\!\cdots\!64 \)
|
| $29$ |
\( (T^{3} + \cdots - 28\!\cdots\!00)^{2} \)
|
| $31$ |
\( (T^{3} + \cdots + 60\!\cdots\!12)^{2} \)
|
| $37$ |
\( T^{6} + \cdots + 53\!\cdots\!56 \)
|
| $41$ |
\( (T^{3} + \cdots - 54\!\cdots\!48)^{2} \)
|
| $43$ |
\( T^{6} + \cdots + 15\!\cdots\!44 \)
|
| $47$ |
\( T^{6} + \cdots + 28\!\cdots\!56 \)
|
| $53$ |
\( T^{6} + \cdots + 16\!\cdots\!84 \)
|
| $59$ |
\( (T^{3} + \cdots - 27\!\cdots\!00)^{2} \)
|
| $61$ |
\( (T^{3} + \cdots + 55\!\cdots\!32)^{2} \)
|
| $67$ |
\( T^{6} + \cdots + 22\!\cdots\!56 \)
|
| $71$ |
\( (T^{3} + \cdots + 19\!\cdots\!72)^{2} \)
|
| $73$ |
\( T^{6} + \cdots + 76\!\cdots\!64 \)
|
| $79$ |
\( (T^{3} + \cdots - 11\!\cdots\!00)^{2} \)
|
| $83$ |
\( T^{6} + \cdots + 12\!\cdots\!04 \)
|
| $89$ |
\( (T^{3} + \cdots + 36\!\cdots\!00)^{2} \)
|
| $97$ |
\( T^{6} + \cdots + 20\!\cdots\!56 \)
|
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