$\GL_2(\Z/56\Z)$-generators: |
$\begin{bmatrix}5&26\\16&55\end{bmatrix}$, $\begin{bmatrix}17&34\\6&49\end{bmatrix}$, $\begin{bmatrix}25&0\\30&43\end{bmatrix}$, $\begin{bmatrix}47&40\\26&53\end{bmatrix}$ |
Contains $-I$: |
yes |
Quadratic refinements: |
56.192.1-56.bu.2.1, 56.192.1-56.bu.2.2, 56.192.1-56.bu.2.3, 56.192.1-56.bu.2.4, 56.192.1-56.bu.2.5, 56.192.1-56.bu.2.6, 56.192.1-56.bu.2.7, 56.192.1-56.bu.2.8, 168.192.1-56.bu.2.1, 168.192.1-56.bu.2.2, 168.192.1-56.bu.2.3, 168.192.1-56.bu.2.4, 168.192.1-56.bu.2.5, 168.192.1-56.bu.2.6, 168.192.1-56.bu.2.7, 168.192.1-56.bu.2.8, 280.192.1-56.bu.2.1, 280.192.1-56.bu.2.2, 280.192.1-56.bu.2.3, 280.192.1-56.bu.2.4, 280.192.1-56.bu.2.5, 280.192.1-56.bu.2.6, 280.192.1-56.bu.2.7, 280.192.1-56.bu.2.8 |
Cyclic 56-isogeny field degree: |
$16$ |
Cyclic 56-torsion field degree: |
$192$ |
Full 56-torsion field degree: |
$32256$ |
Embedded model Embedded model in $\mathbb{P}^{3}$
$ 0 $ | $=$ | $ 2 x^{2} - 2 y^{2} - z^{2} $ |
| $=$ | $4 x^{2} + 3 y^{2} + 5 z^{2} - w^{2}$ |
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 96 from the embedded model of this modular curve to the modular curve
$X(1)$
:
$\displaystyle j$ |
$=$ |
$\displaystyle \frac{2^4}{7^4}\cdot\frac{(2401z^{8}-1372z^{6}w^{2}+980z^{4}w^{4}-224z^{2}w^{6}+16w^{8})^{3}}{w^{4}z^{8}(7z^{2}-2w^{2})^{4}(7z^{2}-w^{2})^{2}}$ |
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.