Invariants
| Level: | $280$ | $\SL_2$-level: | $8$ | ||||
| Index: | $24$ | $\PSL_2$-index: | $12$ | ||||
| Genus: | $0 = 1 + \frac{ 12 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 4 }{2}$ | ||||||
| Cusps: | $4$ (of which $2$ are rational) | Cusp widths | $1^{2}\cdot2\cdot8$ | Cusp orbits | $1^{2}\cdot2$ | ||
| Elliptic points: | $0$ of order $2$ and $0$ of order $3$ | ||||||
| $\Q$-gonality: | $1$ | ||||||
| $\overline{\Q}$-gonality: | $1$ | ||||||
| Rational cusps: | $2$ | ||||||
| Rational CM points: | none |
Other labels
| Cummins and Pauli (CP) label: | 8C0 |
Level structure
| $\GL_2(\Z/280\Z)$-generators: | $\begin{bmatrix}5&276\\246&119\end{bmatrix}$, $\begin{bmatrix}34&125\\271&272\end{bmatrix}$, $\begin{bmatrix}116&115\\111&88\end{bmatrix}$, $\begin{bmatrix}157&160\\28&129\end{bmatrix}$, $\begin{bmatrix}252&101\\29&168\end{bmatrix}$ |
| Contains $-I$: | no $\quad$ (see 40.12.0.bb.1 for the level structure with $-I$) |
| Cyclic 280-isogeny field degree: | $96$ |
| Cyclic 280-torsion field degree: | $9216$ |
| Full 280-torsion field degree: | $61931520$ |
Models
This modular curve is isomorphic to $\mathbb{P}^1$.
Rational points
This modular curve has infinitely many rational points, including 1081 stored non-cuspidal points.
Maps to other modular curves
$j$-invariant map of degree 12 to the modular curve $X(1)$ :
| $\displaystyle j$ | $=$ | $\displaystyle -\frac{2^3}{5^4}\cdot\frac{x^{12}(25x^{4}-160x^{2}y^{2}+64y^{4})^{3}}{y^{2}x^{20}(5x^{2}-2y^{2})}$ |
Modular covers
This modular curve minimally covers the modular curves listed below.
| Covered curve | Level | Index | Degree | Genus | Rank |
|---|---|---|---|---|---|
| 28.12.0-4.c.1.2 | $28$ | $2$ | $2$ | $0$ | $0$ |
| 280.12.0-4.c.1.6 | $280$ | $2$ | $2$ | $0$ | $?$ |
This modular curve is minimally covered by the modular curves in the database listed below.
| Covering curve | Level | Index | Degree | Genus |
|---|---|---|---|---|
| 280.48.0-40.l.1.11 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-40.o.1.6 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-40.bf.1.1 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-40.bg.1.4 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-40.bi.1.6 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-40.bl.1.4 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-40.bx.1.8 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-40.by.1.6 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-280.cv.1.16 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-280.cx.1.8 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-280.cz.1.16 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-280.db.1.8 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-280.dt.1.16 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-280.dv.1.8 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-280.eb.1.16 | $280$ | $2$ | $2$ | $0$ |
| 280.48.0-280.ed.1.8 | $280$ | $2$ | $2$ | $0$ |
| 280.120.4-40.bp.1.10 | $280$ | $5$ | $5$ | $4$ |
| 280.144.3-40.cf.1.2 | $280$ | $6$ | $6$ | $3$ |
| 280.192.5-280.cd.1.57 | $280$ | $8$ | $8$ | $5$ |
| 280.240.7-40.cv.1.9 | $280$ | $10$ | $10$ | $7$ |
| 280.504.16-280.dj.1.60 | $280$ | $21$ | $21$ | $16$ |