Invariants
| Level: | $80$ | $\SL_2$-level: | $16$ | Newform level: | $32$ | ||
| Index: | $96$ | $\PSL_2$-index: | $48$ | ||||
| Genus: | $1 = 1 + \frac{ 48 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 8 }{2}$ | ||||||
| Cusps: | $8$ (none of which are rational) | Cusp widths | $2^{4}\cdot4^{2}\cdot16^{2}$ | Cusp orbits | $2^{4}$ | ||
| Elliptic points: | $0$ of order $2$ and $0$ of order $3$ | ||||||
| Analytic rank: | not computed | ||||||
| $\Q$-gonality: | $2$ | ||||||
| $\overline{\Q}$-gonality: | $2$ | ||||||
| Rational cusps: | $0$ | ||||||
| Rational CM points: | none |
Other labels
| Cummins and Pauli (CP) label: | 16E1 |
Level structure
| $\GL_2(\Z/80\Z)$-generators: | $\begin{bmatrix}15&72\\33&67\end{bmatrix}$, $\begin{bmatrix}23&56\\7&41\end{bmatrix}$, $\begin{bmatrix}27&48\\78&41\end{bmatrix}$, $\begin{bmatrix}79&48\\12&77\end{bmatrix}$ |
| Contains $-I$: | no $\quad$ (see 16.48.1.f.1 for the level structure with $-I$) |
| Cyclic 80-isogeny field degree: | $12$ |
| Cyclic 80-torsion field degree: | $384$ |
| Full 80-torsion field degree: | $122880$ |
Jacobian
| Conductor: | $?$ |
| Simple: | yes |
| Squarefree: | yes |
| Decomposition: | $1$ |
| Newforms: | 32.2.a.a |
Models
Embedded model Embedded model in $\mathbb{P}^{3}$
| $ 0 $ | $=$ | $ 6 x^{2} - 2 x y + z^{2} $ |
| $=$ | $8 x^{2} + 14 x y - 2 y^{2} - z^{2} - w^{2}$ |
Singular plane model Singular plane model
| $ 0 $ | $=$ | $ x^{4} - 2 x^{2} y^{2} - 4 z^{4} $ |
Rational points
This modular curve has real points and $\Q_p$ points for $p$ not dividing the level, but no known rational points.
Maps to other modular curves
$j$-invariant map of degree 48 from the embedded model of this modular curve to the modular curve $X(1)$ :
| $\displaystyle j$ | $=$ | $\displaystyle 5\,\frac{4608y^{2}z^{8}w^{2}+26496y^{2}z^{4}w^{6}+1638y^{2}w^{10}-1280z^{12}-13824z^{10}w^{2}-55536z^{8}w^{4}-79488z^{6}w^{6}-27717z^{4}w^{8}-4914z^{2}w^{10}-461w^{12}}{w^{2}z^{4}(32y^{2}z^{4}+2y^{2}w^{4}-96z^{6}+41z^{4}w^{2}-6z^{2}w^{4}+w^{6})}$ |
Map of degree 1 from the embedded model of this modular curve to the plane model of the modular curve 16.48.1.f.1 :
| $\displaystyle X$ | $=$ | $\displaystyle x$ |
| $\displaystyle Y$ | $=$ | $\displaystyle \frac{1}{8}w$ |
| $\displaystyle Z$ | $=$ | $\displaystyle \frac{1}{4}z$ |
Equation of the image curve:
| $0$ | $=$ | $ X^{4}-2X^{2}Y^{2}-4Z^{4} $ |
Modular covers
This modular curve minimally covers the modular curves listed below.
| Covered curve | Level | Index | Degree | Genus | Rank | Kernel decomposition |
|---|---|---|---|---|---|---|
| 40.48.0-8.k.1.1 | $40$ | $2$ | $2$ | $0$ | $0$ | full Jacobian |
| 80.48.0-16.h.1.2 | $80$ | $2$ | $2$ | $0$ | $?$ | full Jacobian |
| 80.48.0-16.h.1.11 | $80$ | $2$ | $2$ | $0$ | $?$ | full Jacobian |
| 80.48.0-8.k.1.4 | $80$ | $2$ | $2$ | $0$ | $?$ | full Jacobian |
| 80.48.1-16.b.1.6 | $80$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 80.48.1-16.b.1.15 | $80$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
This modular curve is minimally covered by the modular curves in the database listed below.
| Covering curve | Level | Index | Degree | Genus | Rank | Kernel decomposition |
|---|---|---|---|---|---|---|
| 80.192.1-16.i.1.4 | $80$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 80.192.1-16.i.2.4 | $80$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 80.192.1-16.j.1.4 | $80$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 80.192.1-16.j.2.4 | $80$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 80.192.1-80.bc.1.2 | $80$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 80.192.1-80.bc.2.4 | $80$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 80.192.1-80.bd.1.2 | $80$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 80.192.1-80.bd.2.4 | $80$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 80.480.17-80.l.1.5 | $80$ | $5$ | $5$ | $17$ | $?$ | not computed |
| 160.192.5-32.e.1.5 | $160$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 160.192.5-160.f.1.14 | $160$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 160.192.5-32.g.1.6 | $160$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 160.192.5-32.g.2.5 | $160$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 160.192.5-160.g.1.4 | $160$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 160.192.5-160.g.2.8 | $160$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 160.192.5-32.h.1.3 | $160$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 160.192.5-160.h.1.5 | $160$ | $2$ | $2$ | $5$ | $?$ | not computed |
| 240.192.1-48.bc.1.6 | $240$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 240.192.1-48.bc.2.2 | $240$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 240.192.1-48.bd.1.6 | $240$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 240.192.1-48.bd.2.2 | $240$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 240.192.1-240.dk.1.11 | $240$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 240.192.1-240.dk.2.3 | $240$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 240.192.1-240.dl.1.11 | $240$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 240.192.1-240.dl.2.3 | $240$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
| 240.288.9-48.x.1.9 | $240$ | $3$ | $3$ | $9$ | $?$ | not computed |
| 240.384.9-48.jd.1.1 | $240$ | $4$ | $4$ | $9$ | $?$ | not computed |