Properties

Label 120.240.7-60.b.1.1
Level $120$
Index $240$
Genus $7$
Cusps $8$
$\Q$-cusps $0$

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Invariants

Level: $120$ $\SL_2$-level: $20$ Newform level: $1800$
Index: $240$ $\PSL_2$-index:$120$
Genus: $7 = 1 + \frac{ 120 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 8 }{2}$
Cusps: $8$ (none of which are rational) Cusp widths $10^{4}\cdot20^{4}$ Cusp orbits $2^{2}\cdot4$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $3 \le \gamma \le 12$
$\overline{\Q}$-gonality: $3 \le \gamma \le 7$
Rational cusps: $0$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 20C7

Level structure

$\GL_2(\Z/120\Z)$-generators: $\begin{bmatrix}13&8\\58&19\end{bmatrix}$, $\begin{bmatrix}29&32\\56&91\end{bmatrix}$, $\begin{bmatrix}39&92\\16&61\end{bmatrix}$, $\begin{bmatrix}43&44\\102&17\end{bmatrix}$, $\begin{bmatrix}49&62\\42&113\end{bmatrix}$, $\begin{bmatrix}91&80\\50&21\end{bmatrix}$
Contains $-I$: no $\quad$ (see 60.120.7.b.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 $\mathbb{P}^{ 6 }$ defined by 10 equations

$ 0 $ $=$ $ x w - x t + x v + y w + y t - z w - z t - z u + 2 z v $
$=$ $x t + 2 x u - 2 x v + y w + y t + y u - 2 y v + z u - 2 z v$
$=$ $3 x w + x t - x u - x v + 2 y w - 2 y t - 3 z u$
$=$ $2 x w + 2 x t - x u - 2 y w + y u + y v + 2 z w - z t - 2 z u$
$=$$\cdots$
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Singular plane model Singular plane model

$ 0 $ $=$ $ - 16 x^{10} + 108 x^{8} y^{2} + 180 x^{8} z^{2} + 12 x^{7} y^{3} - 108 x^{7} y z^{2} + \cdots + 36 y^{6} z^{4} $
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Rational points

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

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 :

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

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 60.120.7.b.1 :

$\displaystyle X$ $=$ $\displaystyle x+z$
$\displaystyle Y$ $=$ $\displaystyle y$
$\displaystyle Z$ $=$ $\displaystyle \frac{1}{3}w$

Equation of the image curve:

$0$ $=$ $ -16X^{10}+108X^{8}Y^{2}+180X^{8}Z^{2}+12X^{7}Y^{3}-108X^{7}YZ^{2}-268X^{6}Y^{4}-888X^{6}Y^{2}Z^{2}-1044X^{6}Z^{4}-52X^{5}Y^{5}+528X^{5}Y^{3}Z^{2}+1260X^{5}YZ^{4}+307X^{4}Y^{6}+645X^{4}Y^{4}Z^{2}+135X^{4}Y^{2}Z^{4}+945X^{4}Z^{6}+63X^{3}Y^{7}-129X^{3}Y^{5}Z^{2}+837X^{3}Y^{3}Z^{4}+189X^{3}YZ^{6}-167X^{2}Y^{8}-120X^{2}Y^{6}Z^{2}-216X^{2}Y^{4}Z^{4}+54X^{2}Y^{2}Z^{6}+81X^{2}Z^{8}-24XY^{9}+30XY^{7}Z^{2}-144XY^{5}Z^{4}+162XY^{3}Z^{6}+36Y^{10}-48Y^{8}Z^{2}+36Y^{6}Z^{4} $

Modular covers

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
40.120.3-10.a.1.2 $40$ $2$ $2$ $3$ $0$
120.24.0-12.b.1.1 $120$ $10$ $10$ $0$ $?$
120.120.3-10.a.1.1 $120$ $2$ $2$ $3$ $?$

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

Covering curve Level Index Degree Genus
120.480.13-60.b.1.3 $120$ $2$ $2$ $13$
120.480.13-60.d.1.1 $120$ $2$ $2$ $13$
120.480.13-120.e.1.1 $120$ $2$ $2$ $13$
120.480.13-60.j.1.3 $120$ $2$ $2$ $13$
120.480.13-120.k.1.16 $120$ $2$ $2$ $13$
120.480.13-60.l.1.2 $120$ $2$ $2$ $13$
120.480.13-60.z.1.4 $120$ $2$ $2$ $13$
120.480.13-60.bb.1.6 $120$ $2$ $2$ $13$
120.480.13-120.bc.1.1 $120$ $2$ $2$ $13$
120.480.13-60.bh.1.1 $120$ $2$ $2$ $13$
120.480.13-120.bi.1.15 $120$ $2$ $2$ $13$
120.480.13-60.bj.1.6 $120$ $2$ $2$ $13$
120.480.13-120.cy.1.16 $120$ $2$ $2$ $13$
120.480.13-120.de.1.3 $120$ $2$ $2$ $13$
120.480.13-120.dw.1.15 $120$ $2$ $2$ $13$
120.480.13-120.ec.1.3 $120$ $2$ $2$ $13$
120.480.15-60.b.1.4 $120$ $2$ $2$ $15$
120.480.15-60.b.1.6 $120$ $2$ $2$ $15$
120.480.15-60.c.1.27 $120$ $2$ $2$ $15$
120.480.15-60.c.1.29 $120$ $2$ $2$ $15$
120.480.15-120.d.1.10 $120$ $2$ $2$ $15$
120.480.15-120.d.1.16 $120$ $2$ $2$ $15$
120.480.15-120.g.1.10 $120$ $2$ $2$ $15$
120.480.15-120.g.1.16 $120$ $2$ $2$ $15$
120.480.15-60.i.1.9 $120$ $2$ $2$ $15$
120.480.15-60.i.1.15 $120$ $2$ $2$ $15$
120.480.15-60.j.1.7 $120$ $2$ $2$ $15$
120.480.15-60.j.1.8 $120$ $2$ $2$ $15$
120.480.15-60.p.1.5 $120$ $2$ $2$ $15$
120.480.15-60.p.1.6 $120$ $2$ $2$ $15$
120.480.15-60.q.1.3 $120$ $2$ $2$ $15$
120.480.15-60.q.1.5 $120$ $2$ $2$ $15$
120.480.15-120.u.1.12 $120$ $2$ $2$ $15$
120.480.15-120.u.1.14 $120$ $2$ $2$ $15$
120.480.15-60.w.1.1 $120$ $2$ $2$ $15$
120.480.15-60.w.1.7 $120$ $2$ $2$ $15$
120.480.15-60.x.1.5 $120$ $2$ $2$ $15$
120.480.15-60.x.1.6 $120$ $2$ $2$ $15$
120.480.15-120.x.1.12 $120$ $2$ $2$ $15$
120.480.15-120.x.1.14 $120$ $2$ $2$ $15$
120.480.15-120.cd.1.27 $120$ $2$ $2$ $15$
120.480.15-120.cd.1.29 $120$ $2$ $2$ $15$
120.480.15-120.cg.1.27 $120$ $2$ $2$ $15$
120.480.15-120.cg.1.29 $120$ $2$ $2$ $15$
120.480.15-120.cw.1.25 $120$ $2$ $2$ $15$
120.480.15-120.cw.1.31 $120$ $2$ $2$ $15$
120.480.15-120.cz.1.25 $120$ $2$ $2$ $15$
120.480.15-120.cz.1.31 $120$ $2$ $2$ $15$