Invariants
| Level: | $80$ | $\SL_2$-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 | $2^{3}\cdot4$ | ||
| 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: | 16H0 |
Level structure
| $\GL_2(\Z/80\Z)$-generators: | $\begin{bmatrix}6&3\\21&52\end{bmatrix}$, $\begin{bmatrix}42&75\\43&66\end{bmatrix}$, $\begin{bmatrix}66&65\\31&12\end{bmatrix}$, $\begin{bmatrix}69&72\\68&57\end{bmatrix}$ |
| Contains $-I$: | no $\quad$ (see 80.48.0.bz.1 for the level structure with $-I$) |
| Cyclic 80-isogeny field degree: | $12$ |
| Cyclic 80-torsion field degree: | $192$ |
| Full 80-torsion field degree: | $122880$ |
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.2.9 | $16$ | $2$ | $2$ | $0$ | $0$ |
| 40.48.0-40.cb.2.6 | $40$ | $2$ | $2$ | $0$ | $0$ |
| 80.48.0-16.f.2.10 | $80$ | $2$ | $2$ | $0$ | $?$ |
| 80.48.0-80.p.1.18 | $80$ | $2$ | $2$ | $0$ | $?$ |
| 80.48.0-80.p.1.19 | $80$ | $2$ | $2$ | $0$ | $?$ |
| 80.48.0-40.cb.2.12 | $80$ | $2$ | $2$ | $0$ | $?$ |
This modular curve is minimally covered by the modular curves in the database listed below.
| Covering curve | Level | Index | Degree | Genus |
|---|---|---|---|---|
| 80.192.1-80.o.1.6 | $80$ | $2$ | $2$ | $1$ |
| 80.192.1-80.bb.2.2 | $80$ | $2$ | $2$ | $1$ |
| 80.192.1-80.bp.2.5 | $80$ | $2$ | $2$ | $1$ |
| 80.192.1-80.ca.1.2 | $80$ | $2$ | $2$ | $1$ |
| 80.192.1-80.ch.1.1 | $80$ | $2$ | $2$ | $1$ |
| 80.192.1-80.cs.2.1 | $80$ | $2$ | $2$ | $1$ |
| 80.192.1-80.cw.2.2 | $80$ | $2$ | $2$ | $1$ |
| 80.192.1-80.dj.1.2 | $80$ | $2$ | $2$ | $1$ |
| 80.480.16-80.ct.1.9 | $80$ | $5$ | $5$ | $16$ |
| 240.192.1-240.qw.2.2 | $240$ | $2$ | $2$ | $1$ |
| 240.192.1-240.rm.1.5 | $240$ | $2$ | $2$ | $1$ |
| 240.192.1-240.sc.2.2 | $240$ | $2$ | $2$ | $1$ |
| 240.192.1-240.ss.1.2 | $240$ | $2$ | $2$ | $1$ |
| 240.192.1-240.ti.2.2 | $240$ | $2$ | $2$ | $1$ |
| 240.192.1-240.tx.1.5 | $240$ | $2$ | $2$ | $1$ |
| 240.192.1-240.un.2.2 | $240$ | $2$ | $2$ | $1$ |
| 240.192.1-240.ve.1.2 | $240$ | $2$ | $2$ | $1$ |
| 240.288.8-240.xl.1.19 | $240$ | $3$ | $3$ | $8$ |
| 240.384.7-240.bba.1.33 | $240$ | $4$ | $4$ | $7$ |