Invariants
| Level: | $208$ | $\SL_2$-level: | $16$ | Newform level: | $1$ | ||
| Index: | $384$ | $\PSL_2$-index: | $192$ | ||||
| Genus: | $7 = 1 + \frac{ 192 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 20 }{2}$ | ||||||
| Cusps: | $20$ (of which $4$ are rational) | Cusp widths | $8^{16}\cdot16^{4}$ | Cusp orbits | $1^{4}\cdot2^{2}\cdot4^{3}$ | ||
| Elliptic points: | $0$ of order $2$ and $0$ of order $3$ | ||||||
| Analytic rank: | not computed | ||||||
| $\Q$-gonality: | $2 \le \gamma \le 7$ | ||||||
| $\overline{\Q}$-gonality: | $2 \le \gamma \le 7$ | ||||||
| Rational cusps: | $4$ | ||||||
| Rational CM points: | none |
Other labels
| Cummins and Pauli (CP) label: | 16B7 |
Level structure
| $\GL_2(\Z/208\Z)$-generators: | $\begin{bmatrix}1&72\\132&139\end{bmatrix}$, $\begin{bmatrix}65&116\\36&169\end{bmatrix}$, $\begin{bmatrix}129&124\\132&197\end{bmatrix}$, $\begin{bmatrix}161&52\\28&135\end{bmatrix}$ |
| Contains $-I$: | no $\quad$ (see 208.192.7.ck.1 for the level structure with $-I$) |
| Cyclic 208-isogeny field degree: | $56$ |
| Cyclic 208-torsion field degree: | $672$ |
| Full 208-torsion field degree: | $1677312$ |
Rational points
This modular curve has 4 rational cusps but no known non-cuspidal rational points.
Modular covers
This modular curve minimally covers the modular curves listed below.
| Covered curve | Level | Index | Degree | Genus | Rank |
|---|---|---|---|---|---|
| 16.192.2-16.d.1.1 | $16$ | $2$ | $2$ | $2$ | $0$ |
| 104.192.3-104.be.1.1 | $104$ | $2$ | $2$ | $3$ | $?$ |
| 208.192.2-208.c.1.1 | $208$ | $2$ | $2$ | $2$ | $?$ |
| 208.192.2-208.c.1.19 | $208$ | $2$ | $2$ | $2$ | $?$ |
| 208.192.2-16.d.1.4 | $208$ | $2$ | $2$ | $2$ | $?$ |
| 208.192.3-104.be.1.1 | $208$ | $2$ | $2$ | $3$ | $?$ |