Modular curves in Gassmann class 2.2.0.a
| LMFDB label | Name | CP label | SZ label | RZB label | RSZB label | S label | Cusp orbits | $\Q$-cusps | $\Q$-gonality | $\overline{\Q}$-gonality | CM points | 2.2.0.a.1 | $X_{\mathrm{ns}}(2)$ | 2A0 | 2A0-2a | X2 | 2.2.0.1 | 2Cn | $1$ | $1$ | $1$ | $1$ | yes $\quad(D =$ $-4$) |
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Invariants of this Gassmann class
| Level: | $2$ | $\SL_2$-level: | $2$ | ||
| Index: | $2$ | $\PSL_2$-index: | $2$ | ||
| Genus: | $0 = 1 + \frac{ 2 }{12} - \frac{ 0 }{4} - \frac{ 2 }{3} - \frac{ 1 }{2}$ | ||||
| Cusps: | $1$ | ||||
| Elliptic points: | $0$ of order $2$ and $2$ of order $3$ |