Invariants
| Level: | $208$ | $\SL_2$-level: | $16$ | ||||
| Index: | $96$ | $\PSL_2$-index: | $48$ | ||||
| Genus: | $0 = 1 + \frac{ 48 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 10 }{2}$ | ||||||
| Cusps: | $10$ (none of which are rational) | Cusp widths | $1^{4}\cdot2^{2}\cdot4^{2}\cdot16^{2}$ | Cusp orbits | $2^{5}$ | ||
| Elliptic points: | $0$ of order $2$ and $0$ of order $3$ | ||||||
| $\Q$-gonality: | $1 \le \gamma \le 2$ | ||||||
| $\overline{\Q}$-gonality: | $1$ | ||||||
| Rational cusps: | $0$ | ||||||
| Rational CM points: | none |
Other labels
| Cummins and Pauli (CP) label: | 16H0 |
Level structure
| $\GL_2(\Z/208\Z)$-generators: | $\begin{bmatrix}77&2\\156&51\end{bmatrix}$, $\begin{bmatrix}88&129\\31&42\end{bmatrix}$, $\begin{bmatrix}90&141\\93&34\end{bmatrix}$, $\begin{bmatrix}137&74\\116&199\end{bmatrix}$ |
| Contains $-I$: | no $\quad$ (see 208.48.0.bt.2 for the level structure with $-I$) |
| Cyclic 208-isogeny field degree: | $28$ |
| Cyclic 208-torsion field degree: | $1344$ |
| Full 208-torsion field degree: | $6709248$ |
Models
This modular curve is isomorphic to $\mathbb{P}^1$.
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
This modular curve minimally covers the modular curves listed below.
| Covered curve | Level | Index | Degree | Genus | Rank |
|---|---|---|---|---|---|
| 16.48.0-16.e.2.5 | $16$ | $2$ | $2$ | $0$ | $0$ |
| 104.48.0-104.cb.2.2 | $104$ | $2$ | $2$ | $0$ | $?$ |
| 208.48.0-16.e.2.7 | $208$ | $2$ | $2$ | $0$ | $?$ |
| 208.48.0-208.p.1.15 | $208$ | $2$ | $2$ | $0$ | $?$ |
| 208.48.0-208.p.1.19 | $208$ | $2$ | $2$ | $0$ | $?$ |
| 208.48.0-104.cb.2.13 | $208$ | $2$ | $2$ | $0$ | $?$ |
This modular curve is minimally covered by the modular curves in the database listed below.
| Covering curve | Level | Index | Degree | Genus |
|---|---|---|---|---|
| 208.192.1-208.o.1.3 | $208$ | $2$ | $2$ | $1$ |
| 208.192.1-208.y.2.4 | $208$ | $2$ | $2$ | $1$ |
| 208.192.1-208.bf.1.3 | $208$ | $2$ | $2$ | $1$ |
| 208.192.1-208.ca.2.3 | $208$ | $2$ | $2$ | $1$ |
| 208.192.1-208.cf.1.2 | $208$ | $2$ | $2$ | $1$ |
| 208.192.1-208.cq.1.4 | $208$ | $2$ | $2$ | $1$ |
| 208.192.1-208.cu.1.3 | $208$ | $2$ | $2$ | $1$ |
| 208.192.1-208.dh.1.11 | $208$ | $2$ | $2$ | $1$ |