$\GL_2(\Z/56\Z)$-generators: |
$\begin{bmatrix}3&53\\4&25\end{bmatrix}$, $\begin{bmatrix}11&52\\16&27\end{bmatrix}$, $\begin{bmatrix}25&49\\12&31\end{bmatrix}$, $\begin{bmatrix}35&22\\20&29\end{bmatrix}$, $\begin{bmatrix}43&35\\52&13\end{bmatrix}$ |
Contains $-I$: |
yes |
Quadratic refinements: |
56.384.11-56.eo.1.1, 56.384.11-56.eo.1.2, 56.384.11-56.eo.1.3, 56.384.11-56.eo.1.4, 56.384.11-56.eo.1.5, 56.384.11-56.eo.1.6, 56.384.11-56.eo.1.7, 56.384.11-56.eo.1.8, 56.384.11-56.eo.1.9, 56.384.11-56.eo.1.10, 56.384.11-56.eo.1.11, 56.384.11-56.eo.1.12, 56.384.11-56.eo.1.13, 56.384.11-56.eo.1.14, 56.384.11-56.eo.1.15, 56.384.11-56.eo.1.16, 112.384.11-56.eo.1.1, 112.384.11-56.eo.1.2, 112.384.11-56.eo.1.3, 112.384.11-56.eo.1.4, 112.384.11-56.eo.1.5, 112.384.11-56.eo.1.6, 112.384.11-56.eo.1.7, 112.384.11-56.eo.1.8, 168.384.11-56.eo.1.1, 168.384.11-56.eo.1.2, 168.384.11-56.eo.1.3, 168.384.11-56.eo.1.4, 168.384.11-56.eo.1.5, 168.384.11-56.eo.1.6, 168.384.11-56.eo.1.7, 168.384.11-56.eo.1.8, 168.384.11-56.eo.1.9, 168.384.11-56.eo.1.10, 168.384.11-56.eo.1.11, 168.384.11-56.eo.1.12, 168.384.11-56.eo.1.13, 168.384.11-56.eo.1.14, 168.384.11-56.eo.1.15, 168.384.11-56.eo.1.16, 280.384.11-56.eo.1.1, 280.384.11-56.eo.1.2, 280.384.11-56.eo.1.3, 280.384.11-56.eo.1.4, 280.384.11-56.eo.1.5, 280.384.11-56.eo.1.6, 280.384.11-56.eo.1.7, 280.384.11-56.eo.1.8, 280.384.11-56.eo.1.9, 280.384.11-56.eo.1.10, 280.384.11-56.eo.1.11, 280.384.11-56.eo.1.12, 280.384.11-56.eo.1.13, 280.384.11-56.eo.1.14, 280.384.11-56.eo.1.15, 280.384.11-56.eo.1.16 |
Cyclic 56-isogeny field degree: |
$2$ |
Cyclic 56-torsion field degree: |
$48$ |
Full 56-torsion field degree: |
$16128$ |
Canonical model in $\mathbb{P}^{ 10 }$ defined by 36 equations
$ 0 $ | $=$ | $ x t - x v - s a $ |
| $=$ | $x z - x w - z a$ |
| $=$ | $t u - u v - r s - s a + s b$ |
| $=$ | $x r + x a - x b - u a$ |
| $=$ | $\cdots$ |
This modular curve has no real points and no $\Q_p$ points for $p=47$, and therefore no rational points.
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
28.96.5.k.1
:
$\displaystyle X$ |
$=$ |
$\displaystyle z$ |
$\displaystyle Y$ |
$=$ |
$\displaystyle -w$ |
$\displaystyle Z$ |
$=$ |
$\displaystyle v$ |
$\displaystyle W$ |
$=$ |
$\displaystyle t$ |
$\displaystyle T$ |
$=$ |
$\displaystyle s$ |
Equation of the image curve:
$0$ |
$=$ |
$ XZ-XW+XT+YT $ |
|
$=$ |
$ 4XY+2Y^{2}+XZ+YZ+Z^{2}+XW+YW+2ZW-W^{2}+XT-T^{2} $ |
|
$=$ |
$ 7X^{2}-XW-YW-2ZW+W^{2} $ |
Hi
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Cover information
Click on a modular curve in the diagram to see information about it.
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This modular curve minimally covers the modular curves listed below.
This modular curve is minimally covered by the modular curves in the database listed below.