Invariants
| Level: | $228$ | $\SL_2$-level: | $12$ | Newform level: | $1$ | ||
| Index: | $192$ | $\PSL_2$-index: | $96$ | ||||
| Genus: | $1 = 1 + \frac{ 96 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 16 }{2}$ | ||||||
| Cusps: | $16$ (none of which are rational) | Cusp widths | $2^{4}\cdot4^{4}\cdot6^{4}\cdot12^{4}$ | Cusp orbits | $2^{4}\cdot4^{2}$ | ||
| Elliptic points: | $0$ of order $2$ and $0$ of order $3$ | ||||||
| Analytic rank: | not computed | ||||||
| $\Q$-gonality: | $2 \le \gamma \le 96$ | ||||||
| $\overline{\Q}$-gonality: | $2$ | ||||||
| Rational cusps: | $0$ | ||||||
| Rational CM points: | none |
Other labels
| Cummins and Pauli (CP) label: | 12V1 |
Level structure
| $\GL_2(\Z/228\Z)$-generators: | $\begin{bmatrix}19&210\\222&85\end{bmatrix}$, $\begin{bmatrix}61&72\\6&109\end{bmatrix}$, $\begin{bmatrix}67&42\\184&17\end{bmatrix}$, $\begin{bmatrix}73&114\\188&79\end{bmatrix}$ |
| Contains $-I$: | no $\quad$ (see 228.96.1.a.2 for the level structure with $-I$) |
| Cyclic 228-isogeny field degree: | $40$ |
| Cyclic 228-torsion field degree: | $2880$ |
| Full 228-torsion field degree: | $2954880$ |
Jacobian
| Conductor: | $?$ |
| Simple: | yes |
| Squarefree: | yes |
| Decomposition: | $1$ |
| Newforms: | not computed |
Rational points
This modular curve has real points and $\Q_p$ points for $p$ not dividing the level, but no known rational points.
Modular covers
The following modular covers realize this modular curve as a fiber product over $X(1)$.
| Factor curve | Level | Index | Degree | Genus | Rank | Kernel decomposition |
|---|---|---|---|---|---|---|
| 3.8.0-3.a.1.1 | $3$ | $24$ | $24$ | $0$ | $0$ | full Jacobian |
| 76.24.0-4.a.1.1 | $76$ | $8$ | $8$ | $0$ | $?$ | full Jacobian |
This modular curve minimally covers the modular curves listed below.
| Covered curve | Level | Index | Degree | Genus | Rank | Kernel decomposition |
|---|---|---|---|---|---|---|
| 12.96.1-12.a.1.12 | $12$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
| 228.96.0-228.a.1.8 | $228$ | $2$ | $2$ | $0$ | $?$ | full Jacobian |
| 228.96.0-228.a.1.11 | $228$ | $2$ | $2$ | $0$ | $?$ | full Jacobian |
| 228.96.0-228.a.1.29 | $228$ | $2$ | $2$ | $0$ | $?$ | full Jacobian |
| 228.96.1-12.a.1.2 | $228$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
This modular curve is minimally covered by the modular curves in the database listed below.
| Covering curve | Level | Index | Degree | Genus | Rank | Kernel decomposition |
|---|---|---|---|---|---|---|
| 228.384.5-228.a.2.4 | $228$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 228.384.5-228.b.2.4 | $228$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 228.384.5-228.c.2.4 | $228$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 228.384.5-228.d.2.8 | $228$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 228.384.5-228.p.2.4 | $228$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 228.384.5-228.q.2.4 | $228$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 228.384.5-228.s.2.8 | $228$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 228.384.5-228.t.2.4 | $228$ | $2$ | $2$ | $5$ | $?$ | not computed |