Invariants
Level: | $120$ | $\SL_2$-level: | $60$ | Newform level: | $90$ | ||
Index: | $432$ | $\PSL_2$-index: | $216$ | ||||
Genus: | $11 = 1 + \frac{ 216 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 16 }{2}$ | ||||||
Cusps: | $16$ (of which $8$ are rational) | Cusp widths | $3^{4}\cdot6^{4}\cdot15^{4}\cdot30^{4}$ | Cusp orbits | $1^{8}\cdot2^{4}$ | ||
Elliptic points: | $0$ of order $2$ and $0$ of order $3$ | ||||||
Analytic rank: | not computed | ||||||
$\Q$-gonality: | $3 \le \gamma \le 11$ | ||||||
$\overline{\Q}$-gonality: | $3 \le \gamma \le 11$ | ||||||
Rational cusps: | $8$ | ||||||
Rational CM points: | none |
Other labels
Cummins and Pauli (CP) label: | 30G11 |
Level structure
$\GL_2(\Z/120\Z)$-generators: | $\begin{bmatrix}3&50\\2&117\end{bmatrix}$, $\begin{bmatrix}3&80\\44&81\end{bmatrix}$, $\begin{bmatrix}7&30\\33&37\end{bmatrix}$, $\begin{bmatrix}51&40\\10&117\end{bmatrix}$, $\begin{bmatrix}57&70\\76&57\end{bmatrix}$, $\begin{bmatrix}83&60\\48&17\end{bmatrix}$, $\begin{bmatrix}101&0\\99&71\end{bmatrix}$ |
Contains $-I$: | no $\quad$ (see 30.216.11.a.1 for the level structure with $-I$) |
Cyclic 120-isogeny field degree: | $4$ |
Cyclic 120-torsion field degree: | $128$ |
Full 120-torsion field degree: | $81920$ |
Models
Canonical model in $\mathbb{P}^{ 10 }$ defined by 36 equations
$ 0 $ | $=$ | $ x^{2} - x y + x t - x r - y t + v r $ |
$=$ | $x z - x w - x s + x a + y w + y s + r s - s a$ | |
$=$ | $x y + x z - x w - y^{2} + y w - y r - u a - s a$ | |
$=$ | $x s - y t - y v - y s + u a - r s - r a + s a$ | |
$=$ | $\cdots$ |
Rational points
This modular curve has 8 rational cusps but no known non-cuspidal rational points. The following are the coordinates of the rational cusps on this modular curve.
Canonical model |
---|
$(1/3:1/3:-1/3:-1/3:0:0:1/3:-1/3:0:1/3:1)$, $(0:-1:0:0:0:-1:1:0:0:1:0)$, $(1:1:0:0:0:-1:0:0:1:0:0)$, $(1/2:0:0:-1/2:-1/2:0:0:0:-1/2:-1/2:1)$, $(0:0:0:1:0:1:0:1:0:0:0)$, $(0:0:1:0:1:1:0:1:-1:1:1)$, $(0:0:0:0:0:0:0:1:0:0:0)$, $(0:0:0:0:0:0:0:0:1:0:0)$ |
Maps to other modular curves
Map of degree 3 from the canonical model of this modular curve to the canonical model of the modular curve 15.72.3.a.1 :
$\displaystyle X$ | $=$ | $\displaystyle y-z-w+u$ |
$\displaystyle Y$ | $=$ | $\displaystyle x+2z-w+u$ |
$\displaystyle Z$ | $=$ | $\displaystyle x-y$ |
Equation of the image curve:
$0$ | $=$ | $ X^{2}Y^{2}+X^{3}Z-Y^{3}Z-XYZ^{2}+5Z^{4} $ |
Modular covers
This modular curve minimally covers the modular curves listed below.
Covered curve | Level | Index | Degree | Genus | Rank |
---|---|---|---|---|---|
120.72.0-6.a.1.3 | $120$ | $6$ | $6$ | $0$ | $?$ |
120.144.3-30.a.1.50 | $120$ | $3$ | $3$ | $3$ | $?$ |
120.144.3-30.a.1.58 | $120$ | $3$ | $3$ | $3$ | $?$ |