Properties

Label 232.360.13-58.a.1.3
Level $232$
Index $360$
Genus $13$
Cusps $6$
$\Q$-cusps $6$

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Invariants

Level: $232$ $\SL_2$-level: $116$ Newform level: $116$
Index: $360$ $\PSL_2$-index:$180$
Genus: $13 = 1 + \frac{ 180 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 6 }{2}$
Cusps: $6$ (all of which are rational) Cusp widths $2^{3}\cdot58^{3}$ Cusp orbits $1^{6}$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $5 \le \gamma \le 13$
$\overline{\Q}$-gonality: $5 \le \gamma \le 13$
Rational cusps: $6$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 58A13

Level structure

$\GL_2(\Z/232\Z)$-generators: $\begin{bmatrix}57&174\\174&115\end{bmatrix}$, $\begin{bmatrix}71&24\\42&89\end{bmatrix}$, $\begin{bmatrix}91&24\\90&157\end{bmatrix}$, $\begin{bmatrix}119&40\\120&25\end{bmatrix}$, $\begin{bmatrix}167&68\\120&219\end{bmatrix}$, $\begin{bmatrix}211&150\\114&117\end{bmatrix}$
Contains $-I$: no $\quad$ (see 58.180.13.a.1 for the level structure with $-I$)
Cyclic 232-isogeny field degree: $4$
Cyclic 232-torsion field degree: $448$
Full 232-torsion field degree: $2910208$

Models

Canonical model in $\mathbb{P}^{ 12 }$ defined by 55 equations

$ 0 $ $=$ $ x y + x v - w s + s c $
$=$ $x^{2} - x z + s b + s c$
$=$ $y c + v c + s b + s c$
$=$ $x s + y c + u c$
$=$$\cdots$
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Rational points

This modular curve has 6 rational cusps but no known non-cuspidal rational points. The following are the coordinates of the rational cusps on this modular curve.

Canonical model
$(0:-1:0:0:0:1:1:-1:1:0:0:0:0)$, $(0:0:0:0:0:0:0:0:1:0:0:0:0)$, $(0:0:0:0:0:0:0:0:0:0:0:0:1)$, $(0:-1:0:0:0:1:1:-1:0:1:1:0:1)$, $(0:0:0:0:0:0:0:0:0:0:1:0:0)$, $(0:0:0:0:0:0:0:0:0:1:0:0:0)$

Maps to other modular curves

Map of degree 2 from the canonical model of this modular curve to the canonical model of the modular curve $X_0(58)$ :

$\displaystyle X$ $=$ $\displaystyle v-d$
$\displaystyle Y$ $=$ $\displaystyle y+d$
$\displaystyle Z$ $=$ $\displaystyle y-a+b+d$
$\displaystyle W$ $=$ $\displaystyle x+y+w+u-r-d$
$\displaystyle T$ $=$ $\displaystyle -x-y-t-u+r+d$
$\displaystyle U$ $=$ $\displaystyle c$

Equation of the image curve:

$0$ $=$ $ Y^{2}-YZ-YU-TU $
$=$ $ XY+Y^{2}-XW-WT-YU $
$=$ $ XY+YZ-XW-YW+ZW+W^{2}+YU $
$=$ $ 2XZ+YZ+XW+W^{2}-XT-YT-T^{2}+YU-2WU $
$=$ $ XY-2XZ-YZ-ZW-W^{2}-XT-ZT-2XU-YU+ZU+WU $
$=$ $ 2X^{2}+2XY+XZ+YZ+XW+YW+W^{2}+XT+YT+WT-2WU $

Modular covers

The following modular covers realize this modular curve as a fiber product over $X(1)$.

Factor curve Level Index Degree Genus Rank
8.12.0-2.a.1.1 $8$ $30$ $30$ $0$ $0$
$X_0(29)$ $29$ $12$ $6$ $2$ $0$

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
8.12.0-2.a.1.1 $8$ $30$ $30$ $0$ $0$