Properties

Label 240.144.5-48.d.1.21
Level $240$
Index $144$
Genus $5$
Cusps $4$
$\Q$-cusps $2$

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Invariants

Level: $240$ $\SL_2$-level: $48$ Newform level: $288$
Index: $144$ $\PSL_2$-index:$72$
Genus: $5 = 1 + \frac{ 72 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 4 }{2}$
Cusps: $4$ (of which $2$ are rational) Cusp widths $6^{2}\cdot12\cdot48$ Cusp orbits $1^{2}\cdot2$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $2 \le \gamma \le 5$
$\overline{\Q}$-gonality: $2 \le \gamma \le 5$
Rational cusps: $2$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 48A5

Level structure

$\GL_2(\Z/240\Z)$-generators: $\begin{bmatrix}32&87\\39&140\end{bmatrix}$, $\begin{bmatrix}74&65\\223&32\end{bmatrix}$, $\begin{bmatrix}133&24\\90&43\end{bmatrix}$, $\begin{bmatrix}155&236\\158&217\end{bmatrix}$, $\begin{bmatrix}169&204\\66&35\end{bmatrix}$, $\begin{bmatrix}216&157\\205&204\end{bmatrix}$
Contains $-I$: no $\quad$ (see 48.72.5.d.1 for the level structure with $-I$)
Cyclic 240-isogeny field degree: $96$
Cyclic 240-torsion field degree: $6144$
Full 240-torsion field degree: $3932160$

Models

Embedded model Embedded model in $\mathbb{P}^{6}$

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

$ 0 $ $=$ $ x^{11} + x y^{2} z^{8} - 2 y z^{10} $
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Weierstrass model Weierstrass model

$ y^{2} $ $=$ $ x^{12} - 1 $
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Rational points

This modular curve has 2 rational cusps but no known non-cuspidal rational points. The following are the coordinates of the rational cusps on this modular curve.

Embedded model
$(0:0:0:0:0:0:1)$, $(0:0:0:1:0:0:0)$

Maps to other modular curves

$j$-invariant map of degree 72 from the embedded model of this modular curve to the modular curve $X(1)$ :

$\displaystyle j$ $=$ $\displaystyle 2^4\,\frac{13ywuv^{4}+48zw^{4}uv-76zu^{3}v^{3}-4zv^{6}-8w^{7}+96w^{3}u^{2}v^{2}}{vuw^{4}z}$

Map of degree 1 from the embedded model of this modular curve to the plane model of the modular curve 48.72.5.d.1 :

$\displaystyle X$ $=$ $\displaystyle t$
$\displaystyle Y$ $=$ $\displaystyle 4w$
$\displaystyle Z$ $=$ $\displaystyle \frac{1}{2}v$

Equation of the image curve:

$0$ $=$ $ X^{11}+XY^{2}Z^{8}-2YZ^{10} $

Map of degree 1 from the embedded model of this modular curve to the Weierstrass model of the modular curve 48.72.5.d.1 :

$\displaystyle X$ $=$ $\displaystyle -\frac{1}{2}v$
$\displaystyle Y$ $=$ $\displaystyle -\frac{1}{4}wtv^{4}+\frac{1}{64}v^{6}$
$\displaystyle Z$ $=$ $\displaystyle -t$

Modular covers

The following modular covers realize this modular curve as a fiber product over $X(1)$.

Factor curve Level Index Degree Genus Rank
$X_{\mathrm{ns}}^+(3)$ $3$ $48$ $24$ $0$ $0$
80.48.1-16.d.1.3 $80$ $3$ $3$ $1$ $?$

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
80.48.1-16.d.1.3 $80$ $3$ $3$ $1$ $?$
120.72.2-24.cw.1.14 $120$ $2$ $2$ $2$ $?$
240.72.2-24.cw.1.3 $240$ $2$ $2$ $2$ $?$

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

Covering curve Level Index Degree Genus
240.288.9-48.h.2.1 $240$ $2$ $2$ $9$
240.288.9-48.w.1.7 $240$ $2$ $2$ $9$
240.288.9-48.cd.1.8 $240$ $2$ $2$ $9$
240.288.9-48.cl.1.15 $240$ $2$ $2$ $9$
240.288.9-48.cw.1.7 $240$ $2$ $2$ $9$
240.288.9-48.cx.1.7 $240$ $2$ $2$ $9$
240.288.9-48.da.1.7 $240$ $2$ $2$ $9$
240.288.9-48.db.1.7 $240$ $2$ $2$ $9$
240.288.9-240.de.1.15 $240$ $2$ $2$ $9$
240.288.9-240.df.1.18 $240$ $2$ $2$ $9$
240.288.9-240.di.1.20 $240$ $2$ $2$ $9$
240.288.9-240.dj.1.34 $240$ $2$ $2$ $9$
240.288.9-48.dm.1.9 $240$ $2$ $2$ $9$
240.288.9-48.dn.1.15 $240$ $2$ $2$ $9$
240.288.9-48.dq.1.9 $240$ $2$ $2$ $9$
240.288.9-48.dr.1.15 $240$ $2$ $2$ $9$
240.288.9-240.du.1.18 $240$ $2$ $2$ $9$
240.288.9-240.dv.1.26 $240$ $2$ $2$ $9$
240.288.9-240.dy.1.18 $240$ $2$ $2$ $9$
240.288.9-240.dz.1.26 $240$ $2$ $2$ $9$
240.288.9-48.ec.1.17 $240$ $2$ $2$ $9$
240.288.9-48.ed.1.15 $240$ $2$ $2$ $9$
240.288.9-48.eg.1.11 $240$ $2$ $2$ $9$
240.288.9-48.eh.1.15 $240$ $2$ $2$ $9$
240.288.9-240.ek.1.3 $240$ $2$ $2$ $9$
240.288.9-240.el.1.6 $240$ $2$ $2$ $9$
240.288.9-240.eo.1.3 $240$ $2$ $2$ $9$
240.288.9-240.ep.1.6 $240$ $2$ $2$ $9$
240.288.9-240.fa.1.4 $240$ $2$ $2$ $9$
240.288.9-240.fb.1.10 $240$ $2$ $2$ $9$
240.288.9-240.fe.1.8 $240$ $2$ $2$ $9$
240.288.9-240.ff.1.10 $240$ $2$ $2$ $9$
240.288.9-48.fy.1.15 $240$ $2$ $2$ $9$
240.288.9-48.fz.1.15 $240$ $2$ $2$ $9$
240.288.9-48.gc.1.15 $240$ $2$ $2$ $9$
240.288.9-48.gd.1.13 $240$ $2$ $2$ $9$
240.288.9-48.go.1.16 $240$ $2$ $2$ $9$
240.288.9-48.gp.1.15 $240$ $2$ $2$ $9$
240.288.9-48.gs.1.16 $240$ $2$ $2$ $9$
240.288.9-48.gt.1.16 $240$ $2$ $2$ $9$
240.288.9-240.gw.1.10 $240$ $2$ $2$ $9$
240.288.9-240.gx.1.3 $240$ $2$ $2$ $9$
240.288.9-240.ha.1.10 $240$ $2$ $2$ $9$
240.288.9-240.hb.1.2 $240$ $2$ $2$ $9$
240.288.9-240.hm.1.10 $240$ $2$ $2$ $9$
240.288.9-240.hn.1.4 $240$ $2$ $2$ $9$
240.288.9-240.hq.1.6 $240$ $2$ $2$ $9$
240.288.9-240.hr.1.4 $240$ $2$ $2$ $9$