Properties

Label 120.240.5-40.c.1.4
Level $120$
Index $240$
Genus $5$
Cusps $12$
$\Q$-cusps $0$

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Invariants

Level: $120$ $\SL_2$-level: $20$ Newform level: $1600$
Index: $240$ $\PSL_2$-index:$120$
Genus: $5 = 1 + \frac{ 120 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 12 }{2}$
Cusps: $12$ (none of which are rational) Cusp widths $10^{12}$ Cusp orbits $4^{3}$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $4 \le \gamma \le 8$
$\overline{\Q}$-gonality: $4 \le \gamma \le 5$
Rational cusps: $0$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 10B5

Level structure

$\GL_2(\Z/120\Z)$-generators: $\begin{bmatrix}31&18\\54&59\end{bmatrix}$, $\begin{bmatrix}41&48\\114&89\end{bmatrix}$, $\begin{bmatrix}47&110\\110&27\end{bmatrix}$, $\begin{bmatrix}55&12\\2&119\end{bmatrix}$, $\begin{bmatrix}59&36\\2&1\end{bmatrix}$, $\begin{bmatrix}119&86\\26&111\end{bmatrix}$
Contains $-I$: no $\quad$ (see 40.120.5.c.1 for the level structure with $-I$)
Cyclic 120-isogeny field degree: $96$
Cyclic 120-torsion field degree: $3072$
Full 120-torsion field degree: $147456$

Models

Canonical model in $\mathbb{P}^{ 4 }$ defined by 3 equations

$ 0 $ $=$ $ 8 x z - 4 y z + 6 z^{2} - 2 w t - t^{2} $
$=$ $8 x^{2} - 2 y^{2} + 6 y z - 2 z^{2} - w^{2} + w t - t^{2}$
$=$ $8 x y + 6 y^{2} - 4 y z - w^{2} - 2 w t$
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Singular plane model Singular plane model

$ 0 $ $=$ $ 100 x^{4} y^{4} - 100 x^{4} y^{2} z^{2} + 5 x^{4} z^{4} - 3600 x^{2} y^{6} + 2800 x^{2} y^{4} z^{2} + \cdots + z^{8} $
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Rational points

This modular curve has no $\Q_p$ points for $p=17$, 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 10.60.3.a.1 :

$\displaystyle X$ $=$ $\displaystyle -3x-y-z$
$\displaystyle Y$ $=$ $\displaystyle x-3y+2z$
$\displaystyle Z$ $=$ $\displaystyle -x-2y+3z$

Equation of the image curve:

$0$ $=$ $ 2X^{4}-3X^{3}Y-5X^{2}Y^{2}-4XY^{3}-2Y^{4}+3X^{3}Z-18X^{2}YZ-17XY^{2}Z+4Y^{3}Z-5X^{2}Z^{2}+17XYZ^{2}-6Y^{2}Z^{2}+4XZ^{3}+4YZ^{3}-2Z^{4} $

Map of degree 1 from the canonical model of this modular curve to the plane model of the modular curve 40.120.5.c.1 :

$\displaystyle X$ $=$ $\displaystyle x+z$
$\displaystyle Y$ $=$ $\displaystyle \frac{1}{4}y$
$\displaystyle Z$ $=$ $\displaystyle \frac{1}{4}w$

Equation of the image curve:

$0$ $=$ $ 100X^{4}Y^{4}-100X^{4}Y^{2}Z^{2}+5X^{4}Z^{4}-3600X^{2}Y^{6}+2800X^{2}Y^{4}Z^{2}-260X^{2}Y^{2}Z^{4}+32400Y^{8}-36000Y^{6}Z^{2}+10360Y^{4}Z^{4}-200Y^{2}Z^{6}+Z^{8} $

Modular covers

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
60.120.3-10.a.1.2 $60$ $2$ $2$ $3$ $0$
120.120.3-10.a.1.2 $120$ $2$ $2$ $3$ $?$

This modular curve is minimally covered by the modular curves in the database listed below.

Covering curve Level Index Degree Genus
120.480.13-40.z.1.5 $120$ $2$ $2$ $13$
120.480.13-40.z.1.8 $120$ $2$ $2$ $13$
120.480.13-40.ba.1.1 $120$ $2$ $2$ $13$
120.480.13-40.ba.1.2 $120$ $2$ $2$ $13$
120.480.13-40.ba.1.7 $120$ $2$ $2$ $13$
120.480.13-40.bc.1.8 $120$ $2$ $2$ $13$
120.480.13-40.bc.1.9 $120$ $2$ $2$ $13$
120.480.13-40.bc.1.14 $120$ $2$ $2$ $13$
120.480.13-40.bd.1.1 $120$ $2$ $2$ $13$
120.480.13-40.bd.1.4 $120$ $2$ $2$ $13$
120.480.13-40.bd.1.8 $120$ $2$ $2$ $13$
120.480.13-40.bl.1.2 $120$ $2$ $2$ $13$
120.480.13-40.bl.1.3 $120$ $2$ $2$ $13$
120.480.13-40.bl.1.7 $120$ $2$ $2$ $13$
120.480.13-40.bm.1.1 $120$ $2$ $2$ $13$
120.480.13-40.bm.1.6 $120$ $2$ $2$ $13$
120.480.13-40.bm.1.7 $120$ $2$ $2$ $13$
120.480.13-40.bo.1.3 $120$ $2$ $2$ $13$
120.480.13-40.bo.1.4 $120$ $2$ $2$ $13$
120.480.13-40.bo.1.7 $120$ $2$ $2$ $13$
120.480.13-40.bp.1.1 $120$ $2$ $2$ $13$
120.480.13-40.bp.1.4 $120$ $2$ $2$ $13$
120.480.13-40.bp.1.5 $120$ $2$ $2$ $13$
120.480.13-120.cv.1.7 $120$ $2$ $2$ $13$
120.480.13-120.cv.1.8 $120$ $2$ $2$ $13$
120.480.13-120.cv.1.15 $120$ $2$ $2$ $13$
120.480.13-120.cw.1.1 $120$ $2$ $2$ $13$
120.480.13-120.cw.1.2 $120$ $2$ $2$ $13$
120.480.13-120.cw.1.15 $120$ $2$ $2$ $13$
120.480.13-120.cy.1.7 $120$ $2$ $2$ $13$
120.480.13-120.cy.1.9 $120$ $2$ $2$ $13$
120.480.13-120.cy.1.14 $120$ $2$ $2$ $13$
120.480.13-120.cz.1.1 $120$ $2$ $2$ $13$
120.480.13-120.cz.1.12 $120$ $2$ $2$ $13$
120.480.13-120.cz.1.14 $120$ $2$ $2$ $13$
120.480.13-120.ef.1.2 $120$ $2$ $2$ $13$
120.480.13-120.ef.1.7 $120$ $2$ $2$ $13$
120.480.13-120.ef.1.14 $120$ $2$ $2$ $13$
120.480.13-120.eg.1.6 $120$ $2$ $2$ $13$
120.480.13-120.eg.1.9 $120$ $2$ $2$ $13$
120.480.13-120.eg.1.13 $120$ $2$ $2$ $13$
120.480.13-120.ei.1.13 $120$ $2$ $2$ $13$
120.480.13-120.ei.1.15 $120$ $2$ $2$ $13$
120.480.13-120.ei.1.16 $120$ $2$ $2$ $13$
120.480.13-120.ej.1.9 $120$ $2$ $2$ $13$
120.480.13-120.ej.1.10 $120$ $2$ $2$ $13$
120.480.13-120.ej.1.13 $120$ $2$ $2$ $13$