Properties

Label 120.240.7-60.c.1.3
Level $120$
Index $240$
Genus $7$
Cusps $8$
$\Q$-cusps $0$

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Invariants

Level: $120$ $\SL_2$-level: $20$ Newform level: $3600$
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: $\begin{bmatrix}15&22\\68&75\end{bmatrix}$, $\begin{bmatrix}33&8\\8&69\end{bmatrix}$, $\begin{bmatrix}35&52\\52&69\end{bmatrix}$, $\begin{bmatrix}77&106\\118&63\end{bmatrix}$, $\begin{bmatrix}91&106\\66&103\end{bmatrix}$, $\begin{bmatrix}109&4\\44&51\end{bmatrix}$
Contains $-I$: no $\quad$ (see 60.120.7.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 $\mathbb{P}^{ 6 }$ defined by 10 equations

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

$ 0 $ $=$ $ 2187 x^{12} + 40824 x^{11} y + 229392 x^{10} y^{2} + 6480 x^{10} z^{2} + 358992 x^{9} y^{3} + \cdots + 27 y^{4} z^{8} $
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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.c.1 :

$\displaystyle X$ $=$ $\displaystyle x$
$\displaystyle Y$ $=$ $\displaystyle y$
$\displaystyle Z$ $=$ $\displaystyle w$

Equation of the image curve:

$0$ $=$ $ 2187X^{12}+40824X^{11}Y+229392X^{10}Y^{2}+6480X^{10}Z^{2}+358992X^{9}Y^{3}+2106X^{9}YZ^{2}+134568X^{8}Y^{4}-123750X^{8}Y^{2}Z^{2}-3288X^{8}Z^{4}-52704X^{7}Y^{5}-240120X^{7}Y^{3}Z^{2}-8094X^{7}YZ^{4}-15552X^{6}Y^{6}-91368X^{6}Y^{4}Z^{2}+18645X^{6}Y^{2}Z^{4}+520X^{6}Z^{6}+1728X^{5}Y^{7}+33624X^{5}Y^{5}Z^{2}+51606X^{5}Y^{3}Z^{4}+1748X^{5}YZ^{6}+432X^{4}Y^{8}+9864X^{4}Y^{6}Z^{2}+21171X^{4}Y^{4}Z^{4}-262X^{4}Y^{2}Z^{6}-27X^{4}Z^{8}-1152X^{3}Y^{7}Z^{2}-5424X^{3}Y^{5}Z^{4}-4012X^{3}Y^{3}Z^{6}-108X^{3}YZ^{8}-288X^{2}Y^{8}Z^{2}-1584X^{2}Y^{6}Z^{4}-1986X^{2}Y^{4}Z^{6}-81X^{2}Y^{2}Z^{8}+192XY^{7}Z^{4}+24XY^{5}Z^{6}+54XY^{3}Z^{8}+48Y^{8}Z^{4}+8Y^{6}Z^{6}+27Y^{4}Z^{8} $

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 $40$ $2$ $2$ $3$ $0$
120.24.0-60.a.1.2 $120$ $10$ $10$ $0$ $?$
120.120.3-10.a.1.3 $120$ $2$ $2$ $3$ $?$

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.m.1.4 $120$ $2$ $2$ $13$
120.480.13-60.o.1.2 $120$ $2$ $2$ $13$
120.480.13-60.u.1.4 $120$ $2$ $2$ $13$
120.480.13-60.w.1.7 $120$ $2$ $2$ $13$
120.480.13-60.bk.1.7 $120$ $2$ $2$ $13$
120.480.13-120.bl.1.3 $120$ $2$ $2$ $13$
120.480.13-60.bm.1.4 $120$ $2$ $2$ $13$
120.480.13-120.br.1.16 $120$ $2$ $2$ $13$
120.480.13-60.bs.1.2 $120$ $2$ $2$ $13$
120.480.13-60.bu.1.4 $120$ $2$ $2$ $13$
120.480.13-120.cj.1.1 $120$ $2$ $2$ $13$
120.480.13-120.cp.1.10 $120$ $2$ $2$ $13$
120.480.13-120.ef.1.10 $120$ $2$ $2$ $13$
120.480.13-120.el.1.1 $120$ $2$ $2$ $13$
120.480.13-120.fd.1.16 $120$ $2$ $2$ $13$
120.480.13-120.fj.1.3 $120$ $2$ $2$ $13$
120.480.15-60.d.1.5 $120$ $2$ $2$ $15$
120.480.15-60.d.1.7 $120$ $2$ $2$ $15$
120.480.15-60.f.1.13 $120$ $2$ $2$ $15$
120.480.15-60.f.1.15 $120$ $2$ $2$ $15$
120.480.15-60.g.1.11 $120$ $2$ $2$ $15$
120.480.15-60.g.1.15 $120$ $2$ $2$ $15$
120.480.15-120.i.1.22 $120$ $2$ $2$ $15$
120.480.15-120.i.1.24 $120$ $2$ $2$ $15$
120.480.15-60.j.1.10 $120$ $2$ $2$ $15$
120.480.15-60.j.1.14 $120$ $2$ $2$ $15$
120.480.15-120.m.1.22 $120$ $2$ $2$ $15$
120.480.15-120.m.1.24 $120$ $2$ $2$ $15$
120.480.15-120.q.1.12 $120$ $2$ $2$ $15$
120.480.15-120.q.1.16 $120$ $2$ $2$ $15$
120.480.15-120.z.1.12 $120$ $2$ $2$ $15$
120.480.15-120.z.1.16 $120$ $2$ $2$ $15$
120.480.15-60.bc.1.3 $120$ $2$ $2$ $15$
120.480.15-60.bc.1.11 $120$ $2$ $2$ $15$
120.480.15-60.bd.1.5 $120$ $2$ $2$ $15$
120.480.15-60.bd.1.7 $120$ $2$ $2$ $15$
120.480.15-60.bg.1.1 $120$ $2$ $2$ $15$
120.480.15-60.bg.1.3 $120$ $2$ $2$ $15$
120.480.15-60.bh.1.1 $120$ $2$ $2$ $15$
120.480.15-60.bh.1.3 $120$ $2$ $2$ $15$
120.480.15-120.do.1.29 $120$ $2$ $2$ $15$
120.480.15-120.do.1.31 $120$ $2$ $2$ $15$
120.480.15-120.dr.1.29 $120$ $2$ $2$ $15$
120.480.15-120.dr.1.31 $120$ $2$ $2$ $15$
120.480.15-120.ea.1.29 $120$ $2$ $2$ $15$
120.480.15-120.ea.1.31 $120$ $2$ $2$ $15$
120.480.15-120.ed.1.29 $120$ $2$ $2$ $15$
120.480.15-120.ed.1.31 $120$ $2$ $2$ $15$