Properties

Label 240.144.4-48.s.1.28
Level $240$
Index $144$
Genus $4$
Cusps $6$
$\Q$-cusps $2$

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Invariants

Level: $240$ $\SL_2$-level: $48$ Newform level: $576$
Index: $144$ $\PSL_2$-index:$72$
Genus: $4 = 1 + \frac{ 72 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 6 }{2}$
Cusps: $6$ (of which $2$ are rational) Cusp widths $3^{4}\cdot12\cdot48$ Cusp orbits $1^{2}\cdot4$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $3 \le \gamma \le 4$
$\overline{\Q}$-gonality: $3 \le \gamma \le 4$
Rational cusps: $2$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 48F4

Level structure

$\GL_2(\Z/240\Z)$-generators: $\begin{bmatrix}38&57\\75&92\end{bmatrix}$, $\begin{bmatrix}128&235\\145&202\end{bmatrix}$, $\begin{bmatrix}142&77\\77&194\end{bmatrix}$, $\begin{bmatrix}179&230\\10&239\end{bmatrix}$, $\begin{bmatrix}190&49\\31&200\end{bmatrix}$, $\begin{bmatrix}214&203\\5&212\end{bmatrix}$
Contains $-I$: no $\quad$ (see 48.72.4.s.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

Canonical model in $\mathbb{P}^{ 3 }$

$ 0 $ $=$ $ 6 x^{2} + 3 y^{2} - z w $
$=$ $6 x^{2} y - 4 x z^{2} - x w^{2} - 6 y^{3} + 3 y z w$
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Singular plane model Singular plane model

$ 0 $ $=$ $ - x^{6} + x^{4} y z - 2 x^{2} y^{4} + x^{2} y^{2} z^{2} - 2 x^{2} z^{4} + 3 y^{3} z^{3} $
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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.

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

Maps to other modular curves

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

$\displaystyle j$ $=$ $\displaystyle 2^6\cdot3^3\,\frac{62592xyz^{10}-814896xyz^{8}w^{2}+1331640xyz^{6}w^{4}-601020xyz^{4}w^{6}+93276xyz^{2}w^{8}-5187xyw^{10}-210864y^{2}z^{9}w+648288y^{2}z^{7}w^{3}-427932y^{2}z^{5}w^{5}+83448y^{2}z^{3}w^{7}-5169y^{2}zw^{9}+288z^{12}+64640z^{10}w^{2}-156704z^{8}w^{4}+57640z^{6}w^{6}+6766z^{4}w^{8}-3460z^{2}w^{10}+288w^{12}}{384xyz^{10}+288xyz^{8}w^{2}-648xyz^{4}w^{6}+126xyz^{2}w^{8}-3xyw^{10}+384y^{2}z^{9}w+288y^{2}z^{7}w^{3}+72y^{2}z^{5}w^{5}-144y^{2}z^{3}w^{7}+15y^{2}zw^{9}-160z^{10}w^{2}-104z^{8}w^{4}+112z^{6}w^{6}+16z^{4}w^{8}-4z^{2}w^{10}}$

Map of degree 1 from the canonical model of this modular curve to the plane model of the modular curve 48.72.4.s.1 :

$\displaystyle X$ $=$ $\displaystyle x$
$\displaystyle Y$ $=$ $\displaystyle \frac{1}{3}z$
$\displaystyle Z$ $=$ $\displaystyle \frac{1}{6}w$

Equation of the image curve:

$0$ $=$ $ -X^{6}+X^{4}YZ-2X^{2}Y^{4}+X^{2}Y^{2}Z^{2}-2X^{2}Z^{4}+3Y^{3}Z^{3} $

Modular covers

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
120.72.2-24.cw.1.14 $120$ $2$ $2$ $2$ $?$
240.72.2-24.cw.1.8 $240$ $2$ $2$ $2$ $?$

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

Covering curve Level Index Degree Genus
240.288.7-48.fm.1.6 $240$ $2$ $2$ $7$
240.288.7-48.fo.1.8 $240$ $2$ $2$ $7$
240.288.7-48.fq.1.6 $240$ $2$ $2$ $7$
240.288.7-48.fs.1.6 $240$ $2$ $2$ $7$
240.288.7-48.gd.1.2 $240$ $2$ $2$ $7$
240.288.7-48.ge.1.6 $240$ $2$ $2$ $7$
240.288.7-48.gh.1.2 $240$ $2$ $2$ $7$
240.288.7-48.gi.1.6 $240$ $2$ $2$ $7$
240.288.7-240.zo.1.13 $240$ $2$ $2$ $7$
240.288.7-240.zq.1.25 $240$ $2$ $2$ $7$
240.288.7-240.zs.1.13 $240$ $2$ $2$ $7$
240.288.7-240.zu.1.17 $240$ $2$ $2$ $7$
240.288.7-240.bau.1.31 $240$ $2$ $2$ $7$
240.288.7-240.baw.1.28 $240$ $2$ $2$ $7$
240.288.7-240.bay.1.31 $240$ $2$ $2$ $7$
240.288.7-240.bba.1.28 $240$ $2$ $2$ $7$
240.288.9-48.f.2.5 $240$ $2$ $2$ $9$
240.288.9-48.m.1.2 $240$ $2$ $2$ $9$
240.288.9-48.cb.1.1 $240$ $2$ $2$ $9$
240.288.9-48.cg.1.2 $240$ $2$ $2$ $9$
240.288.9-48.gn.1.13 $240$ $2$ $2$ $9$
240.288.9-48.go.1.16 $240$ $2$ $2$ $9$
240.288.9-48.gr.1.15 $240$ $2$ $2$ $9$
240.288.9-48.gs.1.16 $240$ $2$ $2$ $9$
240.288.9-48.hc.1.2 $240$ $2$ $2$ $9$
240.288.9-48.he.1.2 $240$ $2$ $2$ $9$
240.288.9-48.hg.1.2 $240$ $2$ $2$ $9$
240.288.9-48.hi.1.2 $240$ $2$ $2$ $9$
240.288.9-48.ii.1.15 $240$ $2$ $2$ $9$
240.288.9-48.ik.1.16 $240$ $2$ $2$ $9$
240.288.9-48.im.1.13 $240$ $2$ $2$ $9$
240.288.9-48.io.1.16 $240$ $2$ $2$ $9$
240.288.9-240.qa.1.34 $240$ $2$ $2$ $9$
240.288.9-240.qc.1.19 $240$ $2$ $2$ $9$
240.288.9-240.qe.1.17 $240$ $2$ $2$ $9$
240.288.9-240.qg.1.39 $240$ $2$ $2$ $9$
240.288.9-240.rg.1.10 $240$ $2$ $2$ $9$
240.288.9-240.ri.1.2 $240$ $2$ $2$ $9$
240.288.9-240.rk.1.6 $240$ $2$ $2$ $9$
240.288.9-240.rm.1.2 $240$ $2$ $2$ $9$
240.288.9-240.rw.1.2 $240$ $2$ $2$ $9$
240.288.9-240.ry.1.1 $240$ $2$ $2$ $9$
240.288.9-240.sa.1.2 $240$ $2$ $2$ $9$
240.288.9-240.sc.1.1 $240$ $2$ $2$ $9$
240.288.9-240.tc.1.14 $240$ $2$ $2$ $9$
240.288.9-240.te.1.28 $240$ $2$ $2$ $9$
240.288.9-240.tg.1.8 $240$ $2$ $2$ $9$
240.288.9-240.ti.1.28 $240$ $2$ $2$ $9$