Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [9025,2,Mod(1,9025)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(9025, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([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("9025.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 9025 = 5^{2} \cdot 19^{2} \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 9025.a (trivial) |
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: | yes |
| Analytic conductor: | \(72.0649878242\) |
| Analytic rank: | \(1\) |
| Dimension: | \(3\) |
| Coefficient field: | \(\Q(\zeta_{14})^+\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{3} - x^{2} - 2x + 1 \)
|
| Coefficient ring: | \(\Z[a_1, a_2]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 475) |
| Fricke sign: | \(1\) |
| Sato-Tate group: | $\mathrm{SU}(2)$ |
$q$-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 \(1,\beta_1,\beta_2\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.
Basis of coefficient ring in terms of \(\nu = \zeta_{14} + \zeta_{14}^{-1}\):
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( \nu^{2} - 2 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{2} + 2 \)
|
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.1 |
|
−2.80194 | −0.554958 | 5.85086 | 0 | 1.55496 | −3.04892 | −10.7899 | −2.69202 | 0 | |||||||||||||||||||||||||||
| 1.2 | −1.44504 | −2.24698 | 0.0881460 | 0 | 3.24698 | 1.35690 | 2.76271 | 2.04892 | 0 | ||||||||||||||||||||||||||||
| 1.3 | 0.246980 | 0.801938 | −1.93900 | 0 | 0.198062 | 1.69202 | −0.972853 | −2.35690 | 0 | ||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(5\) | \(-1\) |
| \(19\) | \(-1\) |
Inner twists
This newform does not admit any (nontrivial) inner twists.
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 9025.2.a.w | 3 | |
| 5.b | even | 2 | 1 | 9025.2.a.be | 3 | ||
| 19.b | odd | 2 | 1 | 475.2.a.h | yes | 3 | |
| 57.d | even | 2 | 1 | 4275.2.a.z | 3 | ||
| 76.d | even | 2 | 1 | 7600.2.a.bn | 3 | ||
| 95.d | odd | 2 | 1 | 475.2.a.d | ✓ | 3 | |
| 95.g | even | 4 | 2 | 475.2.b.c | 6 | ||
| 285.b | even | 2 | 1 | 4275.2.a.bn | 3 | ||
| 380.d | even | 2 | 1 | 7600.2.a.bw | 3 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 475.2.a.d | ✓ | 3 | 95.d | odd | 2 | 1 | |
| 475.2.a.h | yes | 3 | 19.b | odd | 2 | 1 | |
| 475.2.b.c | 6 | 95.g | even | 4 | 2 | ||
| 4275.2.a.z | 3 | 57.d | even | 2 | 1 | ||
| 4275.2.a.bn | 3 | 285.b | even | 2 | 1 | ||
| 7600.2.a.bn | 3 | 76.d | even | 2 | 1 | ||
| 7600.2.a.bw | 3 | 380.d | even | 2 | 1 | ||
| 9025.2.a.w | 3 | 1.a | even | 1 | 1 | trivial | |
| 9025.2.a.be | 3 | 5.b | even | 2 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(9025))\):
|
\( T_{2}^{3} + 4T_{2}^{2} + 3T_{2} - 1 \)
|
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\( T_{3}^{3} + 2T_{3}^{2} - T_{3} - 1 \)
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\( T_{7}^{3} - 7T_{7} + 7 \)
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\( T_{11}^{3} - T_{11}^{2} - 16T_{11} - 13 \)
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\( T_{29}^{3} - 7T_{29}^{2} - 42T_{29} + 91 \)
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Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{3} + 4 T^{2} + \cdots - 1 \)
|
| $3$ |
\( T^{3} + 2T^{2} - T - 1 \)
|
| $5$ |
\( T^{3} \)
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| $7$ |
\( T^{3} - 7T + 7 \)
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| $11$ |
\( T^{3} - T^{2} + \cdots - 13 \)
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| $13$ |
\( T^{3} + 5 T^{2} + \cdots + 1 \)
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| $17$ |
\( T^{3} - 2 T^{2} + \cdots - 13 \)
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| $19$ |
\( T^{3} \)
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| $23$ |
\( T^{3} - 8 T^{2} + \cdots - 13 \)
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| $29$ |
\( T^{3} - 7 T^{2} + \cdots + 91 \)
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| $31$ |
\( T^{3} - 5 T^{2} + \cdots - 43 \)
|
| $37$ |
\( T^{3} + 5 T^{2} + \cdots + 1 \)
|
| $41$ |
\( T^{3} + T^{2} + \cdots - 421 \)
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| $43$ |
\( T^{3} - 5 T^{2} + \cdots + 293 \)
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| $47$ |
\( T^{3} - 3 T^{2} + \cdots + 13 \)
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| $53$ |
\( T^{3} + 19 T^{2} + \cdots - 307 \)
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| $59$ |
\( T^{3} + 10 T^{2} + \cdots - 328 \)
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| $61$ |
\( T^{3} + 17 T^{2} + \cdots - 41 \)
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| $67$ |
\( T^{3} - T^{2} + \cdots - 559 \)
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| $71$ |
\( T^{3} - 19 T^{2} + \cdots + 307 \)
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| $73$ |
\( T^{3} + T^{2} + \cdots - 463 \)
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| $79$ |
\( T^{3} + 18 T^{2} + \cdots + 97 \)
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| $83$ |
\( T^{3} - 13 T^{2} + \cdots + 139 \)
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| $89$ |
\( T^{3} + 2 T^{2} + \cdots - 281 \)
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| $97$ |
\( T^{3} + 5 T^{2} + \cdots + 1 \)
|
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