Properties

Label 30.48.1-30.d.2.4
Level $30$
Index $48$
Genus $1$
Analytic rank $0$
Cusps $4$
$\Q$-cusps $2$

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Invariants

Level: $30$ $\SL_2$-level: $10$ Newform level: $180$
Index: $48$ $\PSL_2$-index:$24$
Genus: $1 = 1 + \frac{ 24 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 4 }{2}$
Cusps: $4$ (of which $2$ are rational) Cusp widths $2^{2}\cdot10^{2}$ Cusp orbits $1^{2}\cdot2$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: $0$
$\Q$-gonality: $2$
$\overline{\Q}$-gonality: $2$
Rational cusps: $2$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 10D1
Rouse, Sutherland, and Zureick-Brown (RSZB) label: 30.48.1.8

Level structure

$\GL_2(\Z/30\Z)$-generators: $\begin{bmatrix}1&20\\5&9\end{bmatrix}$, $\begin{bmatrix}11&10\\12&23\end{bmatrix}$, $\begin{bmatrix}21&25\\23&14\end{bmatrix}$
Contains $-I$: no $\quad$ (see 30.24.1.d.2 for the level structure with $-I$)
Cyclic 30-isogeny field degree: $12$
Cyclic 30-torsion field degree: $96$
Full 30-torsion field degree: $2880$

Jacobian

Conductor: $2^{2}\cdot3^{2}\cdot5$
Simple: yes
Squarefree: yes
Decomposition: $1$
Newforms: 180.2.a.a

Models

Weierstrass model Weierstrass model

$ y^{2} $ $=$ $ x^{3} - 372x + 2761 $
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Rational points

This modular curve has rational points, including 2 rational_cusps and 1 known non-cuspidal non-CM point. The following are the known rational points on this modular curve (one row per $j$-invariant).

Elliptic curve CM $j$-invariant $j$-heightWeierstrass model
no$\infty$ $0.000$$(11:0:1)$, $(0:1:0)$
75.a1 no$\tfrac{-102400}{3}$ $= -1 \cdot 2^{12} \cdot 3^{-1} \cdot 5^{2}$$11.537$$(2:-45:1)$, $(2:45:1)$, $(12:-5:1)$, $(12:5:1)$

Maps to other modular curves

$j$-invariant map of degree 24 from the Weierstrass model of this modular curve to the modular curve $X(1)$ :

$\displaystyle j$ $=$ $\displaystyle \frac{1}{3}\cdot\frac{2184x^{2}y^{6}-49819344840x^{2}y^{4}z^{2}+3422526853924728x^{2}y^{2}z^{4}-27039497222900331576x^{2}z^{6}-1674672xy^{6}z+2876294021616xy^{4}z^{3}-100451964128318928xy^{2}z^{5}+602183388702393227664xz^{7}-y^{8}+510498348y^{6}z^{2}-106591444126974y^{4}z^{4}+1503562500387405180y^{2}z^{6}-3352238111755385915049z^{8}}{y^{2}(x^{2}y^{4}-594x^{2}y^{2}z^{2}-729x^{2}z^{4}+44xy^{4}z-6453xy^{2}z^{3}-8019xz^{5}+466y^{4}z^{2}+150876y^{2}z^{4}+182979z^{6})}$

Modular covers

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

Factor curve Level Index Degree Genus Rank Kernel decomposition
5.24.0-5.a.2.2 $5$ $2$ $2$ $0$ $0$ full Jacobian
6.2.0.a.1 $6$ $24$ $12$ $0$ $0$ full Jacobian

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank Kernel decomposition
5.24.0-5.a.2.2 $5$ $2$ $2$ $0$ $0$ full Jacobian
30.24.0-5.a.2.1 $30$ $2$ $2$ $0$ $0$ full Jacobian

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

Covering curve Level Index Degree Genus Rank Kernel decomposition
30.144.1-30.d.2.4 $30$ $3$ $3$ $1$ $0$ dimension zero
30.144.5-30.k.1.2 $30$ $3$ $3$ $5$ $0$ $1^{2}\cdot2$
30.144.5-30.l.1.2 $30$ $3$ $3$ $5$ $0$ $1^{2}\cdot2$
30.192.5-30.c.2.1 $30$ $4$ $4$ $5$ $0$ $1^{2}\cdot2$
30.240.5-30.e.1.4 $30$ $5$ $5$ $5$ $1$ $1^{2}\cdot2$
60.192.5-60.v.1.7 $60$ $4$ $4$ $5$ $0$ $1^{2}\cdot2$
150.240.5-150.b.2.3 $150$ $5$ $5$ $5$ $?$ not computed
210.384.13-210.f.2.2 $210$ $8$ $8$ $13$ $?$ not computed