Invariants
| Level: | $80$ | $\SL_2$-level: | $80$ | Newform level: | $1$ | ||
| Index: | $288$ | $\PSL_2$-index: | $144$ | ||||
| Genus: | $9 = 1 + \frac{ 144 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 8 }{2}$ | ||||||
| Cusps: | $8$ (all of which are rational) | Cusp widths | $2^{2}\cdot4\cdot10^{2}\cdot16\cdot20\cdot80$ | Cusp orbits | $1^{8}$ | ||
| Elliptic points: | $0$ of order $2$ and $0$ of order $3$ | ||||||
| Analytic rank: | not computed | ||||||
| $\Q$-gonality: | $4 \le \gamma \le 9$ | ||||||
| $\overline{\Q}$-gonality: | $4 \le \gamma \le 9$ | ||||||
| Rational cusps: | $8$ | ||||||
| Rational CM points: | none |
Other labels
| Cummins and Pauli (CP) label: | 80F9 |
Level structure
| $\GL_2(\Z/80\Z)$-generators: | $\begin{bmatrix}0&17\\47&70\end{bmatrix}$, $\begin{bmatrix}8&1\\47&62\end{bmatrix}$, $\begin{bmatrix}28&59\\25&42\end{bmatrix}$, $\begin{bmatrix}38&5\\39&24\end{bmatrix}$, $\begin{bmatrix}44&35\\75&4\end{bmatrix}$, $\begin{bmatrix}51&70\\2&79\end{bmatrix}$ |
| Contains $-I$: | no $\quad$ (see 80.144.9.i.1 for the level structure with $-I$) |
| Cyclic 80-isogeny field degree: | $2$ |
| Cyclic 80-torsion field degree: | $32$ |
| Full 80-torsion field degree: | $40960$ |
Rational points
This modular curve has 8 rational cusps but no known non-cuspidal 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 |
|---|---|---|---|---|---|
| $X_0(5)$ | $5$ | $48$ | $24$ | $0$ | $0$ |
| 16.48.1-16.a.1.10 | $16$ | $6$ | $6$ | $1$ | $0$ |
This modular curve minimally covers the modular curves listed below.
| Covered curve | Level | Index | Degree | Genus | Rank |
|---|---|---|---|---|---|
| 16.48.1-16.a.1.10 | $16$ | $6$ | $6$ | $1$ | $0$ |
| 40.144.3-40.bx.1.44 | $40$ | $2$ | $2$ | $3$ | $0$ |
| 80.144.3-40.bx.1.18 | $80$ | $2$ | $2$ | $3$ | $?$ |