Invariants
Level: | $56$ | $\SL_2$-level: | $8$ | Newform level: | $32$ | ||
Index: | $96$ | $\PSL_2$-index: | $96$ | ||||
Genus: | $1 = 1 + \frac{ 96 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 16 }{2}$ | ||||||
Cusps: | $16$ (none of which are rational) | Cusp widths | $4^{8}\cdot8^{8}$ | Cusp orbits | $2^{4}\cdot4^{2}$ | ||
Elliptic points: | $0$ of order $2$ and $0$ of order $3$ | ||||||
Analytic rank: | $0$ | ||||||
$\Q$-gonality: | $2$ | ||||||
$\overline{\Q}$-gonality: | $2$ | ||||||
Rational cusps: | $0$ | ||||||
Rational CM points: | none |
Other labels
Cummins and Pauli (CP) label: | 8K1 |
Rouse, Sutherland, and Zureick-Brown (RSZB) label: | 56.96.1.659 |
Level structure
$\GL_2(\Z/56\Z)$-generators: | $\begin{bmatrix}3&24\\0&43\end{bmatrix}$, $\begin{bmatrix}7&55\\8&53\end{bmatrix}$, $\begin{bmatrix}15&48\\0&27\end{bmatrix}$, $\begin{bmatrix}33&37\\32&27\end{bmatrix}$ |
Contains $-I$: | yes |
Quadratic refinements: | 56.192.1-56.cj.2.1, 56.192.1-56.cj.2.2, 56.192.1-56.cj.2.3, 56.192.1-56.cj.2.4, 112.192.1-56.cj.2.1, 112.192.1-56.cj.2.2, 112.192.1-56.cj.2.3, 112.192.1-56.cj.2.4, 168.192.1-56.cj.2.1, 168.192.1-56.cj.2.2, 168.192.1-56.cj.2.3, 168.192.1-56.cj.2.4, 280.192.1-56.cj.2.1, 280.192.1-56.cj.2.2, 280.192.1-56.cj.2.3, 280.192.1-56.cj.2.4 |
Cyclic 56-isogeny field degree: | $8$ |
Cyclic 56-torsion field degree: | $192$ |
Full 56-torsion field degree: | $32256$ |
Jacobian
Conductor: | $2^{5}$ |
Simple: | yes |
Squarefree: | yes |
Decomposition: | $1$ |
Newforms: | 32.2.a.a |
Rational points
This modular curve has real points and $\Q_p$ points for $p$ not dividing the level, but no known rational points.
Modular covers
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.
Covered curve | Level | Index | Degree | Genus | Rank | Kernel decomposition |
---|---|---|---|---|---|---|
8.48.1.bb.1 | $8$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
56.48.0.bd.1 | $56$ | $2$ | $2$ | $0$ | $0$ | full Jacobian |
56.48.0.bo.2 | $56$ | $2$ | $2$ | $0$ | $0$ | full Jacobian |
This modular curve is minimally covered by the modular curves in the database listed below.
Covering curve | Level | Index | Degree | Genus | Rank | Kernel decomposition |
---|---|---|---|---|---|---|
56.768.49.rk.1 | $56$ | $8$ | $8$ | $49$ | $3$ | $1^{20}\cdot2^{6}\cdot4^{4}$ |
56.2016.145.ckq.2 | $56$ | $21$ | $21$ | $145$ | $19$ | $1^{16}\cdot2^{26}\cdot4\cdot6^{4}\cdot12^{4}$ |
56.2688.193.cjm.1 | $56$ | $28$ | $28$ | $193$ | $22$ | $1^{36}\cdot2^{32}\cdot4^{5}\cdot6^{4}\cdot12^{4}$ |
112.192.5.gm.1 | $112$ | $2$ | $2$ | $5$ | $?$ | not computed |
112.192.5.gw.1 | $112$ | $2$ | $2$ | $5$ | $?$ | not computed |
112.192.5.hj.1 | $112$ | $2$ | $2$ | $5$ | $?$ | not computed |
112.192.5.hs.1 | $112$ | $2$ | $2$ | $5$ | $?$ | not computed |
168.288.17.osn.2 | $168$ | $3$ | $3$ | $17$ | $?$ | not computed |
168.384.17.eqj.1 | $168$ | $4$ | $4$ | $17$ | $?$ | not computed |