Properties

Label 112.384.11-56.fd.2.25
Level $112$
Index $384$
Genus $11$
Cusps $12$
$\Q$-cusps $4$

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Invariants

Level: $112$ $\SL_2$-level: $112$ Newform level: $392$
Index: $384$ $\PSL_2$-index:$192$
Genus: $11 = 1 + \frac{ 192 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 12 }{2}$
Cusps: $12$ (of which $4$ are rational) Cusp widths $1^{2}\cdot2\cdot4\cdot7^{2}\cdot8^{2}\cdot14\cdot28\cdot56^{2}$ Cusp orbits $1^{4}\cdot2^{4}$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $2 \le \gamma \le 11$
$\overline{\Q}$-gonality: $2 \le \gamma \le 11$
Rational cusps: $4$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 56P11

Level structure

$\GL_2(\Z/112\Z)$-generators: $\begin{bmatrix}22&85\\103&60\end{bmatrix}$, $\begin{bmatrix}34&95\\3&70\end{bmatrix}$, $\begin{bmatrix}50&75\\111&70\end{bmatrix}$, $\begin{bmatrix}52&89\\11&18\end{bmatrix}$, $\begin{bmatrix}57&22\\14&9\end{bmatrix}$, $\begin{bmatrix}81&36\\108&9\end{bmatrix}$
Contains $-I$: no $\quad$ (see 56.192.11.fd.2 for the level structure with $-I$)
Cyclic 112-isogeny field degree: $2$
Cyclic 112-torsion field degree: $48$
Full 112-torsion field degree: $129024$

Models

Canonical model in $\mathbb{P}^{ 10 }$ defined by 36 equations

$ 0 $ $=$ $ x w + x t - y z $
$=$ $x z + x b - y z + z v$
$=$ $x u + x v - x b - z u$
$=$ $y z - y w - y t + y b + w v + t v$
$=$$\cdots$
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Rational points

This modular curve has 4 rational cusps but no known non-cuspidal rational points. The following are the coordinates of the rational cusps on this modular curve.

Canonical model
$(0:0:0:0:0:-1/2:0:1/2:1:1:0)$, $(0:0:0:0:0:0:1:0:1:0:1)$, $(0:0:0:0:0:1:0:1:0:0:0)$, $(0:0:0:0:0:0:1:0:-1:0:1)$

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 $X_0(56)$ :

$\displaystyle X$ $=$ $\displaystyle x$
$\displaystyle Y$ $=$ $\displaystyle -y$
$\displaystyle Z$ $=$ $\displaystyle -z$
$\displaystyle W$ $=$ $\displaystyle -w$
$\displaystyle T$ $=$ $\displaystyle -t$

Equation of the image curve:

$0$ $=$ $ YZ+XW+XT $
$=$ $ X^{2}+Y^{2}-XZ-YW-2W^{2}-WT $
$=$ $ 2X^{2}-Y^{2}+XZ+Z^{2}-YW-YT $

Modular covers

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
112.48.0-56.bv.1.1 $112$ $8$ $8$ $0$ $?$
112.192.5-56.bl.1.14 $112$ $2$ $2$ $5$ $?$
112.192.5-56.bl.1.31 $112$ $2$ $2$ $5$ $?$