Invariants
Level: | $120$ | $\SL_2$-level: | $30$ | Newform level: | $45$ | ||
Index: | $144$ | $\PSL_2$-index: | $72$ | ||||
Genus: | $3 = 1 + \frac{ 72 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 8 }{2}$ | ||||||
Cusps: | $8$ (of which $4$ are rational) | Cusp widths | $3^{4}\cdot15^{4}$ | Cusp orbits | $1^{4}\cdot2^{2}$ | ||
Elliptic points: | $0$ of order $2$ and $0$ of order $3$ | ||||||
Analytic rank: | not computed | ||||||
$\Q$-gonality: | $3$ | ||||||
$\overline{\Q}$-gonality: | $3$ | ||||||
Rational cusps: | $4$ | ||||||
Rational CM points: | none |
Other labels
Cummins and Pauli (CP) label: | 15E3 |
Level structure
$\GL_2(\Z/120\Z)$-generators: | $\begin{bmatrix}41&45\\99&62\end{bmatrix}$, $\begin{bmatrix}75&97\\79&108\end{bmatrix}$, $\begin{bmatrix}95&102\\3&29\end{bmatrix}$, $\begin{bmatrix}102&31\\19&84\end{bmatrix}$, $\begin{bmatrix}104&117\\63&23\end{bmatrix}$, $\begin{bmatrix}117&26\\35&63\end{bmatrix}$ |
Contains $-I$: | no $\quad$ (see 15.72.3.a.1 for the level structure with $-I$) |
Cyclic 120-isogeny field degree: | $12$ |
Cyclic 120-torsion field degree: | $384$ |
Full 120-torsion field degree: | $245760$ |
Models
Canonical model in $\mathbb{P}^{ 2 }$
$ 0 $ | $=$ | $ x^{3} z + x^{2} y^{2} - x y z^{2} - y^{3} z + 5 z^{4} $ |
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 |
---|
$(1:0:0)$, $(-2:-1:1)$, $(1:2:1)$, $(0:1:0)$ |
Maps to other modular curves
$j$-invariant map of degree 72 from the canonical model of this modular curve to the modular curve $X(1)$ :
$\displaystyle j$ | $=$ | $\displaystyle -\frac{x^{18}-714x^{16}yz-174951x^{15}z^{3}+15875374x^{13}yz^{4}+294242376x^{12}z^{6}-2231220361x^{10}yz^{7}-6838076244x^{9}z^{9}+9461848986x^{7}yz^{10}-31494996496x^{6}z^{12}+14122661253x^{4}yz^{13}+23950271597x^{3}z^{15}-93750xy^{16}z+1468750xy^{13}z^{4}+1890625xy^{10}z^{7}+19940202xy^{7}z^{10}-3299371917xy^{4}z^{13}+11703100608xyz^{16}+15625y^{18}-140625y^{15}z^{3}-375000y^{12}z^{6}-55952412y^{9}z^{9}+2642480720y^{6}z^{12}-29288460677y^{3}z^{15}+86629783010z^{18}}{z(x^{16}y-30x^{15}z^{2}-391x^{13}yz^{3}+2741x^{12}z^{5}+11197x^{10}yz^{6}-8654x^{9}z^{8}+82705x^{7}yz^{9}-542666x^{6}z^{11}-1177994x^{4}yz^{12}-4357560x^{3}z^{14}-15625xy^{10}z^{6}-15204xy^{7}z^{9}+1538129xy^{4}z^{12}-5301770xyz^{15}+93749y^{9}z^{8}-1092023y^{6}z^{11}+5501185y^{3}z^{14}-11104775z^{17})}$ |
Modular covers
The following modular covers realize this modular curve as a fiber product over $X(1)$.
Factor curve | Level | Index | Degree | Genus | Rank |
---|---|---|---|---|---|
$X_0(5)$ | $5$ | $24$ | $12$ | $0$ | $0$ |
24.24.0-3.a.1.4 | $24$ | $6$ | $6$ | $0$ | $0$ |
This modular curve minimally covers the modular curves listed below.
Covered curve | Level | Index | Degree | Genus | Rank |
---|---|---|---|---|---|
24.24.0-3.a.1.4 | $24$ | $6$ | $6$ | $0$ | $0$ |
120.48.1-15.a.1.18 | $120$ | $3$ | $3$ | $1$ | $?$ |
120.48.1-15.a.1.20 | $120$ | $3$ | $3$ | $1$ | $?$ |
This modular curve is minimally covered by the modular curves in the database listed below.