Properties

Label 120.240.7-40.cl.1.30
Level $120$
Index $240$
Genus $7$
Cusps $8$
$\Q$-cusps $0$

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Invariants

Level: $120$ $\SL_2$-level: $40$ Newform level: $200$
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 $5^{4}\cdot10^{2}\cdot40^{2}$ Cusp orbits $2^{4}$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $4 \le \gamma \le 12$
$\overline{\Q}$-gonality: $4 \le \gamma \le 7$
Rational cusps: $0$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 40G7

Level structure

$\GL_2(\Z/120\Z)$-generators: $\begin{bmatrix}14&69\\111&88\end{bmatrix}$, $\begin{bmatrix}28&51\\119&44\end{bmatrix}$, $\begin{bmatrix}62&29\\81&118\end{bmatrix}$, $\begin{bmatrix}63&118\\112&41\end{bmatrix}$, $\begin{bmatrix}66&101\\47&4\end{bmatrix}$, $\begin{bmatrix}85&86\\36&95\end{bmatrix}$
Contains $-I$: no $\quad$ (see 40.120.7.cl.1 for the level structure with $-I$)
Cyclic 120-isogeny field degree: $24$
Cyclic 120-torsion field degree: $768$
Full 120-torsion field degree: $147456$

Models

Canonical model in $\mathbb{P}^{ 6 }$ defined by 10 equations

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

$ 0 $ $=$ $ - 441 x^{10} - 1764 x^{9} z + 468 x^{8} y^{2} + 609 x^{8} z^{2} + 2655 x^{7} y^{2} z + 672 x^{7} z^{3} + \cdots + z^{10} $
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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 20.60.3.c.1 :

$\displaystyle X$ $=$ $\displaystyle -5x+z-2w$
$\displaystyle Y$ $=$ $\displaystyle -z-3w$
$\displaystyle Z$ $=$ $\displaystyle -3z+w$

Equation of the image curve:

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

Map of degree 1 from the canonical model of this modular curve to the plane model of the modular curve 40.120.7.cl.1 :

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

Equation of the image curve:

$0$ $=$ $ -441X^{10}-1764X^{9}Z+468X^{8}Y^{2}+609X^{8}Z^{2}+2655X^{7}Y^{2}Z+672X^{7}Z^{3}-180X^{6}Y^{4}+1600X^{6}Y^{2}Z^{2}-142X^{6}Z^{4}-954X^{5}Y^{4}Z-1485X^{5}Y^{2}Z^{3}+104X^{5}Z^{5}+36X^{4}Y^{6}-999X^{4}Y^{4}Z^{2}-992X^{4}Y^{2}Z^{4}-34X^{4}Z^{6}+63X^{3}Y^{6}Z-324X^{3}Y^{4}Z^{3}+1005X^{3}Y^{2}Z^{5}-32X^{3}Z^{7}-9X^{2}Y^{8}-32X^{2}Y^{6}Z^{2}-174X^{2}Y^{4}Z^{4}+592X^{2}Y^{2}Z^{6}+7X^{2}Z^{8}+9XY^{6}Z^{3}+14XY^{4}Z^{5}+65XY^{2}Z^{7}-4XZ^{9}+9Y^{4}Z^{6}-4Y^{2}Z^{8}+Z^{10} $

Modular covers

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
60.120.3-20.c.1.6 $60$ $2$ $2$ $3$ $0$
120.24.0-40.z.1.13 $120$ $10$ $10$ $0$ $?$
120.120.3-20.c.1.19 $120$ $2$ $2$ $3$ $?$

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.nh.1.15 $120$ $2$ $2$ $13$
120.480.13-40.nj.1.14 $120$ $2$ $2$ $13$
120.480.13-40.nl.1.11 $120$ $2$ $2$ $13$
120.480.13-40.nn.1.14 $120$ $2$ $2$ $13$
120.480.13-40.on.1.11 $120$ $2$ $2$ $13$
120.480.13-40.op.1.14 $120$ $2$ $2$ $13$
120.480.13-40.or.1.6 $120$ $2$ $2$ $13$
120.480.13-40.ot.1.14 $120$ $2$ $2$ $13$
120.480.13-120.bxh.1.8 $120$ $2$ $2$ $13$
120.480.13-120.bxj.1.16 $120$ $2$ $2$ $13$
120.480.13-120.bxp.1.16 $120$ $2$ $2$ $13$
120.480.13-120.bxr.1.16 $120$ $2$ $2$ $13$
120.480.13-120.caz.1.32 $120$ $2$ $2$ $13$
120.480.13-120.cbb.1.16 $120$ $2$ $2$ $13$
120.480.13-120.cbh.1.32 $120$ $2$ $2$ $13$
120.480.13-120.cbj.1.16 $120$ $2$ $2$ $13$
120.480.15-40.cd.1.2 $120$ $2$ $2$ $15$
120.480.15-40.co.1.2 $120$ $2$ $2$ $15$
120.480.15-40.dn.1.2 $120$ $2$ $2$ $15$
120.480.15-40.do.1.2 $120$ $2$ $2$ $15$
120.480.15-40.fl.1.7 $120$ $2$ $2$ $15$
120.480.15-40.fm.1.16 $120$ $2$ $2$ $15$
120.480.15-40.ga.1.23 $120$ $2$ $2$ $15$
120.480.15-40.gd.1.16 $120$ $2$ $2$ $15$
120.480.15-40.hh.1.2 $120$ $2$ $2$ $15$
120.480.15-40.hj.1.2 $120$ $2$ $2$ $15$
120.480.15-40.hl.1.2 $120$ $2$ $2$ $15$
120.480.15-40.hn.1.4 $120$ $2$ $2$ $15$
120.480.15-120.id.1.4 $120$ $2$ $2$ $15$
120.480.15-120.if.1.2 $120$ $2$ $2$ $15$
120.480.15-40.in.1.2 $120$ $2$ $2$ $15$
120.480.15-40.ip.1.2 $120$ $2$ $2$ $15$
120.480.15-40.ir.1.2 $120$ $2$ $2$ $15$
120.480.15-40.it.1.2 $120$ $2$ $2$ $15$
120.480.15-120.jf.1.4 $120$ $2$ $2$ $15$
120.480.15-120.jh.1.2 $120$ $2$ $2$ $15$
120.480.15-120.mb.1.12 $120$ $2$ $2$ $15$
120.480.15-120.mc.1.4 $120$ $2$ $2$ $15$
120.480.15-120.my.1.8 $120$ $2$ $2$ $15$
120.480.15-120.nb.1.4 $120$ $2$ $2$ $15$
120.480.15-120.pd.1.30 $120$ $2$ $2$ $15$
120.480.15-120.pf.1.6 $120$ $2$ $2$ $15$
120.480.15-120.pl.1.30 $120$ $2$ $2$ $15$
120.480.15-120.pn.1.14 $120$ $2$ $2$ $15$
120.480.15-120.sv.1.11 $120$ $2$ $2$ $15$
120.480.15-120.sx.1.3 $120$ $2$ $2$ $15$
120.480.15-120.td.1.11 $120$ $2$ $2$ $15$
120.480.15-120.tf.1.11 $120$ $2$ $2$ $15$