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 | $2^{8}\cdot16^{2}$ | Cusp orbits | $2^{3}\cdot4$ | ||
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: | 16G0 |
Level structure
$\GL_2(\Z/208\Z)$-generators: | $\begin{bmatrix}19&16\\89&21\end{bmatrix}$, $\begin{bmatrix}57&4\\91&137\end{bmatrix}$, $\begin{bmatrix}79&104\\30&187\end{bmatrix}$, $\begin{bmatrix}165&128\\129&115\end{bmatrix}$ |
Contains $-I$: | no $\quad$ (see 208.48.0.bh.1 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.f.2.1 | $16$ | $2$ | $2$ | $0$ | $0$ |
104.48.0-104.bp.1.11 | $104$ | $2$ | $2$ | $0$ | $?$ |
208.48.0-16.f.2.4 | $208$ | $2$ | $2$ | $0$ | $?$ |
208.48.0-208.m.1.10 | $208$ | $2$ | $2$ | $0$ | $?$ |
208.48.0-208.m.1.25 | $208$ | $2$ | $2$ | $0$ | $?$ |
208.48.0-104.bp.1.7 | $208$ | $2$ | $2$ | $0$ | $?$ |
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.da.1.1 | $208$ | $2$ | $2$ | $1$ |
208.192.1-208.db.2.2 | $208$ | $2$ | $2$ | $1$ |
208.192.1-208.di.2.2 | $208$ | $2$ | $2$ | $1$ |
208.192.1-208.dj.1.1 | $208$ | $2$ | $2$ | $1$ |
208.192.1-208.ei.1.1 | $208$ | $2$ | $2$ | $1$ |
208.192.1-208.ej.2.2 | $208$ | $2$ | $2$ | $1$ |
208.192.1-208.eq.2.2 | $208$ | $2$ | $2$ | $1$ |
208.192.1-208.er.1.1 | $208$ | $2$ | $2$ | $1$ |