Newspace parameters
| Level: | \( N \) | \(=\) | \( 315 = 3^{2} \cdot 5 \cdot 7 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 315.b (of order \(2\), degree \(1\), minimal) |
Newform invariants
| Self dual: | no |
| Analytic conductor: | \(2.51528766367\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Coefficient field: | \(\Q(\sqrt{-2}, \sqrt{3})\) |
|
|
|
| Defining polynomial: |
\( x^{4} + 4x^{2} + 1 \)
|
| Coefficient ring: | \(\Z[a_1, a_2]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | yes |
| Sato-Tate group: | $\mathrm{SU}(2)[C_{2}]$ |
$q$-expansion
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.
Basis of coefficient ring in terms of a root \(\nu\) of
\( x^{4} + 4x^{2} + 1 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( \nu^{2} + 2 \)
|
| \(\beta_{3}\) | \(=\) |
\( \nu^{3} + 4\nu \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{2} - 2 \)
|
| \(\nu^{3}\) | \(=\) |
\( \beta_{3} - 4\beta_1 \)
|
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/315\mathbb{Z}\right)^\times\).
| \(n\) | \(127\) | \(136\) | \(281\) |
| \(\chi(n)\) | \(1\) | \(-1\) | \(-1\) |
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.
| Label | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 251.1 |
|
− | 1.93185i | 0 | −1.73205 | −1.00000 | 0 | 1.00000 | − | 2.44949i | − | 0.517638i | 0 | 1.93185i | ||||||||||||||||||||||||||
| 251.2 | − | 0.517638i | 0 | 1.73205 | −1.00000 | 0 | 1.00000 | − | 2.44949i | − | 1.93185i | 0 | 0.517638i | |||||||||||||||||||||||||||
| 251.3 | 0.517638i | 0 | 1.73205 | −1.00000 | 0 | 1.00000 | + | 2.44949i | 1.93185i | 0 | − | 0.517638i | ||||||||||||||||||||||||||||
| 251.4 | 1.93185i | 0 | −1.73205 | −1.00000 | 0 | 1.00000 | + | 2.44949i | 0.517638i | 0 | − | 1.93185i | ||||||||||||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 21.c | even | 2 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 315.2.b.a | ✓ | 4 |
| 3.b | odd | 2 | 1 | 315.2.b.b | yes | 4 | |
| 4.b | odd | 2 | 1 | 5040.2.f.a | 4 | ||
| 5.b | even | 2 | 1 | 1575.2.b.b | 4 | ||
| 5.c | odd | 4 | 2 | 1575.2.g.c | 8 | ||
| 7.b | odd | 2 | 1 | 315.2.b.b | yes | 4 | |
| 12.b | even | 2 | 1 | 5040.2.f.c | 4 | ||
| 15.d | odd | 2 | 1 | 1575.2.b.c | 4 | ||
| 15.e | even | 4 | 2 | 1575.2.g.a | 8 | ||
| 21.c | even | 2 | 1 | inner | 315.2.b.a | ✓ | 4 |
| 28.d | even | 2 | 1 | 5040.2.f.c | 4 | ||
| 35.c | odd | 2 | 1 | 1575.2.b.c | 4 | ||
| 35.f | even | 4 | 2 | 1575.2.g.a | 8 | ||
| 84.h | odd | 2 | 1 | 5040.2.f.a | 4 | ||
| 105.g | even | 2 | 1 | 1575.2.b.b | 4 | ||
| 105.k | odd | 4 | 2 | 1575.2.g.c | 8 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 315.2.b.a | ✓ | 4 | 1.a | even | 1 | 1 | trivial |
| 315.2.b.a | ✓ | 4 | 21.c | even | 2 | 1 | inner |
| 315.2.b.b | yes | 4 | 3.b | odd | 2 | 1 | |
| 315.2.b.b | yes | 4 | 7.b | odd | 2 | 1 | |
| 1575.2.b.b | 4 | 5.b | even | 2 | 1 | ||
| 1575.2.b.b | 4 | 105.g | even | 2 | 1 | ||
| 1575.2.b.c | 4 | 15.d | odd | 2 | 1 | ||
| 1575.2.b.c | 4 | 35.c | odd | 2 | 1 | ||
| 1575.2.g.a | 8 | 15.e | even | 4 | 2 | ||
| 1575.2.g.a | 8 | 35.f | even | 4 | 2 | ||
| 1575.2.g.c | 8 | 5.c | odd | 4 | 2 | ||
| 1575.2.g.c | 8 | 105.k | odd | 4 | 2 | ||
| 5040.2.f.a | 4 | 4.b | odd | 2 | 1 | ||
| 5040.2.f.a | 4 | 84.h | odd | 2 | 1 | ||
| 5040.2.f.c | 4 | 12.b | even | 2 | 1 | ||
| 5040.2.f.c | 4 | 28.d | even | 2 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{47}^{2} - 12T_{47} + 24 \)
acting on \(S_{2}^{\mathrm{new}}(315, [\chi])\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{4} + 4T^{2} + 1 \)
|
| $3$ |
\( T^{4} \)
|
| $5$ |
\( (T + 1)^{4} \)
|
| $7$ |
\( (T^{2} - 2 T + 7)^{2} \)
|
| $11$ |
\( T^{4} + 28T^{2} + 4 \)
|
| $13$ |
\( T^{4} + 48T^{2} + 144 \)
|
| $17$ |
\( (T^{2} - 12)^{2} \)
|
| $19$ |
\( T^{4} + 48T^{2} + 144 \)
|
| $23$ |
\( (T^{2} + 2)^{2} \)
|
| $29$ |
\( (T^{2} + 2)^{2} \)
|
| $31$ |
\( T^{4} + 48T^{2} + 144 \)
|
| $37$ |
\( (T^{2} - 4 T - 8)^{2} \)
|
| $41$ |
\( (T^{2} - 108)^{2} \)
|
| $43$ |
\( (T^{2} - 4 T - 44)^{2} \)
|
| $47$ |
\( (T^{2} - 12 T + 24)^{2} \)
|
| $53$ |
\( T^{4} + 124T^{2} + 2116 \)
|
| $59$ |
\( (T^{2} - 12 T + 24)^{2} \)
|
| $61$ |
\( T^{4} + 192T^{2} + 2304 \)
|
| $67$ |
\( (T^{2} + 8 T - 32)^{2} \)
|
| $71$ |
\( T^{4} + 316 T^{2} + 20164 \)
|
| $73$ |
\( T^{4} + 48T^{2} + 144 \)
|
| $79$ |
\( (T^{2} + 8 T - 32)^{2} \)
|
| $83$ |
\( (T^{2} + 12 T + 24)^{2} \)
|
| $89$ |
\( (T^{2} - 12 T - 12)^{2} \)
|
| $97$ |
\( T^{4} + 336 T^{2} + 24336 \)
|
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