Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [275,4,Mod(199,275)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(275, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([1, 0]))
N = Newforms(chi, 4, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("275.199");
S:= CuspForms(chi, 4);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 275 = 5^{2} \cdot 11 \) |
| Weight: | \( k \) | \(=\) | \( 4 \) |
| Character orbit: | \([\chi]\) | \(=\) | 275.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: | \(16.2255252516\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Coefficient field: | \(\Q(\zeta_{12})\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} - x^{2} + 1 \)
|
| Coefficient ring: | \(\Z[a_1, a_2, a_3]\) |
| Coefficient ring index: | \( 2^{2} \) |
| Twist minimal: | no (minimal twist has level 11) |
| 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 \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.
Basis of coefficient ring
| \(\beta_{1}\) | \(=\) |
\( \zeta_{12}^{3} \)
|
| \(\beta_{2}\) | \(=\) |
\( 2\zeta_{12}^{2} - 1 \)
|
| \(\beta_{3}\) | \(=\) |
\( -\zeta_{12}^{3} + 2\zeta_{12} \)
|
| \(\zeta_{12}\) | \(=\) |
\( ( \beta_{3} + \beta_1 ) / 2 \)
|
| \(\zeta_{12}^{2}\) | \(=\) |
\( ( \beta_{2} + 1 ) / 2 \)
|
| \(\zeta_{12}^{3}\) | \(=\) |
\( \beta_1 \)
|
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/275\mathbb{Z}\right)^\times\).
| \(n\) | \(101\) | \(177\) |
| \(\chi(n)\) | \(1\) | \(-1\) |
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.
comment: embeddings in the coefficient field
gp: mfembed(f)
| Label | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 199.1 |
|
− | 2.73205i | − | 7.92820i | 0.535898 | 0 | −21.6603 | − | 3.07180i | − | 23.3205i | −35.8564 | 0 | ||||||||||||||||||||||||||
| 199.2 | − | 0.732051i | − | 5.92820i | 7.46410 | 0 | −4.33975 | 16.9282i | − | 11.3205i | −8.14359 | 0 | ||||||||||||||||||||||||||||
| 199.3 | 0.732051i | 5.92820i | 7.46410 | 0 | −4.33975 | − | 16.9282i | 11.3205i | −8.14359 | 0 | ||||||||||||||||||||||||||||||
| 199.4 | 2.73205i | 7.92820i | 0.535898 | 0 | −21.6603 | 3.07180i | 23.3205i | −35.8564 | 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 | 275.4.b.c | 4 | |
| 5.b | even | 2 | 1 | inner | 275.4.b.c | 4 | |
| 5.c | odd | 4 | 1 | 11.4.a.a | ✓ | 2 | |
| 5.c | odd | 4 | 1 | 275.4.a.b | 2 | ||
| 15.e | even | 4 | 1 | 99.4.a.c | 2 | ||
| 15.e | even | 4 | 1 | 2475.4.a.q | 2 | ||
| 20.e | even | 4 | 1 | 176.4.a.i | 2 | ||
| 35.f | even | 4 | 1 | 539.4.a.e | 2 | ||
| 40.i | odd | 4 | 1 | 704.4.a.p | 2 | ||
| 40.k | even | 4 | 1 | 704.4.a.n | 2 | ||
| 55.e | even | 4 | 1 | 121.4.a.c | 2 | ||
| 55.k | odd | 20 | 4 | 121.4.c.c | 8 | ||
| 55.l | even | 20 | 4 | 121.4.c.f | 8 | ||
| 60.l | odd | 4 | 1 | 1584.4.a.bc | 2 | ||
| 65.h | odd | 4 | 1 | 1859.4.a.a | 2 | ||
| 165.l | odd | 4 | 1 | 1089.4.a.v | 2 | ||
| 220.i | odd | 4 | 1 | 1936.4.a.w | 2 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 11.4.a.a | ✓ | 2 | 5.c | odd | 4 | 1 | |
| 99.4.a.c | 2 | 15.e | even | 4 | 1 | ||
| 121.4.a.c | 2 | 55.e | even | 4 | 1 | ||
| 121.4.c.c | 8 | 55.k | odd | 20 | 4 | ||
| 121.4.c.f | 8 | 55.l | even | 20 | 4 | ||
| 176.4.a.i | 2 | 20.e | even | 4 | 1 | ||
| 275.4.a.b | 2 | 5.c | odd | 4 | 1 | ||
| 275.4.b.c | 4 | 1.a | even | 1 | 1 | trivial | |
| 275.4.b.c | 4 | 5.b | even | 2 | 1 | inner | |
| 539.4.a.e | 2 | 35.f | even | 4 | 1 | ||
| 704.4.a.n | 2 | 40.k | even | 4 | 1 | ||
| 704.4.a.p | 2 | 40.i | odd | 4 | 1 | ||
| 1089.4.a.v | 2 | 165.l | odd | 4 | 1 | ||
| 1584.4.a.bc | 2 | 60.l | odd | 4 | 1 | ||
| 1859.4.a.a | 2 | 65.h | odd | 4 | 1 | ||
| 1936.4.a.w | 2 | 220.i | odd | 4 | 1 | ||
| 2475.4.a.q | 2 | 15.e | even | 4 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{2}^{4} + 8T_{2}^{2} + 4 \)
acting on \(S_{4}^{\mathrm{new}}(275, [\chi])\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{4} + 8T^{2} + 4 \)
|
| $3$ |
\( T^{4} + 98T^{2} + 2209 \)
|
| $5$ |
\( T^{4} \)
|
| $7$ |
\( T^{4} + 296T^{2} + 2704 \)
|
| $11$ |
\( (T + 11)^{4} \)
|
| $13$ |
\( T^{4} + 5600 T^{2} + 160000 \)
|
| $17$ |
\( T^{4} + 8552 T^{2} + 11641744 \)
|
| $19$ |
\( (T^{2} + 72 T - 9504)^{2} \)
|
| $23$ |
\( T^{4} + 12578 T^{2} + 2211169 \)
|
| $29$ |
\( (T^{2} + 144 T - 4224)^{2} \)
|
| $31$ |
\( (T^{2} + 34 T - 2063)^{2} \)
|
| $37$ |
\( T^{4} + 1842 T^{2} + 288369 \)
|
| $41$ |
\( (T^{2} - 536 T + 71776)^{2} \)
|
| $43$ |
\( T^{4} + 3336 T^{2} + 17424 \)
|
| $47$ |
\( T^{4} + 123392 T^{2} + 610287616 \)
|
| $53$ |
\( T^{4} + \cdots + 2612027664 \)
|
| $59$ |
\( (T^{2} + 634 T + 48217)^{2} \)
|
| $61$ |
\( (T^{2} - 840 T + 74832)^{2} \)
|
| $67$ |
\( T^{4} + \cdots + 19860983041 \)
|
| $71$ |
\( (T^{2} + 678 T + 97593)^{2} \)
|
| $73$ |
\( T^{4} + \cdots + 380777853184 \)
|
| $79$ |
\( (T^{2} + 316 T - 1266044)^{2} \)
|
| $83$ |
\( T^{4} + 195912 T^{2} + 133541136 \)
|
| $89$ |
\( (T^{2} - 1842 T + 525489)^{2} \)
|
| $97$ |
\( T^{4} + \cdots + 1302339722401 \)
|
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