Properties

Label 280.192.3-40.bf.1.3
Level $280$
Index $192$
Genus $3$
Cusps $12$
$\Q$-cusps $4$

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Invariants

Level: $280$ $\SL_2$-level: $8$ Newform level: $1600$
Index: $192$ $\PSL_2$-index:$96$
Genus: $3 = 1 + \frac{ 96 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 12 }{2}$
Cusps: $12$ (of which $4$ are rational) Cusp widths $8^{12}$ Cusp orbits $1^{4}\cdot2^{2}\cdot4$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $2 \le \gamma \le 3$
$\overline{\Q}$-gonality: $2 \le \gamma \le 3$
Rational cusps: $4$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 8B3

Level structure

$\GL_2(\Z/280\Z)$-generators: $\begin{bmatrix}31&180\\252&111\end{bmatrix}$, $\begin{bmatrix}73&120\\148&81\end{bmatrix}$, $\begin{bmatrix}145&196\\36&111\end{bmatrix}$, $\begin{bmatrix}215&256\\116&171\end{bmatrix}$, $\begin{bmatrix}249&48\\24&7\end{bmatrix}$
Contains $-I$: no $\quad$ (see 40.96.3.bf.1 for the level structure with $-I$)
Cyclic 280-isogeny field degree: $96$
Cyclic 280-torsion field degree: $4608$
Full 280-torsion field degree: $7741440$

Models

Embedded model Embedded model in $\mathbb{P}^{4}$

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

$ 0 $ $=$ $ 8 x^{6} z + 40 x^{5} y^{2} + 20 x^{5} z^{2} + 120 x^{4} y^{2} z + 24 x^{4} z^{3} + 80 x^{3} y^{2} z^{2} + \cdots - 10 y^{2} z^{5} $
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Weierstrass model Weierstrass model

$ y^{2} $ $=$ $ 10x^{7} - 70x^{5} + 70x^{3} - 10x $
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Rational points

This modular curve has 4 rational cusps but no known non-cuspidal rational points. The following are the coordinates of the rational cusps on this modular curve.

Embedded model
$(0:0:0:-1:1)$, $(0:-2:1:1:0)$, $(-2:0:0:1:0)$, $(2:-2:1:0:0)$

Maps to other modular curves

$j$-invariant map of degree 96 from the embedded model of this modular curve to the modular curve $X(1)$ :

$\displaystyle j$ $=$ $\displaystyle \frac{1}{5}\cdot\frac{34617876973xzt^{12}-680000000xw^{13}-5264000000xw^{12}t+14859600000xw^{11}t^{2}+334922000000xw^{10}t^{3}+839405720000xw^{9}t^{4}-789404320000xw^{8}t^{5}-3459377000000xw^{7}t^{6}-2340716652000xw^{6}t^{7}+2088615126000xw^{5}t^{8}+2760464324400xw^{4}t^{9}+149252453160xw^{3}t^{10}-764599768520xw^{2}t^{11}-122434644877xwt^{12}+18063164043xt^{13}-2325000000yzw^{12}-20592000000yzw^{11}t+32375400000yzw^{10}t^{2}+1338098800000yzw^{9}t^{3}+3497133030000yzw^{8}t^{4}-4010575440000yzw^{7}t^{5}-14841031460000yzw^{6}t^{6}-4896844344000yzw^{5}t^{7}+11864892244500yzw^{4}t^{8}+6157022517600yzw^{3}t^{9}-2417568760060yzw^{2}t^{10}-1099302832600yzwt^{11}+42349164770yzt^{12}+40000000yw^{13}-480000000yw^{12}t+20604100000yw^{11}t^{2}-98434800000yw^{10}t^{3}+27910420000yw^{9}t^{4}+1571549600000yw^{8}t^{5}+454813785000yw^{7}t^{6}-5859505240000yw^{6}t^{7}-3354000082000yw^{5}t^{8}+5404231721200yw^{4}t^{9}+2652174885110yw^{3}t^{10}-1948121531720yw^{2}t^{11}-401771335854ywt^{12}+190393722122yt^{13}+4000000z^{12}t^{2}+48000000z^{11}t^{3}+262000000z^{10}t^{4}+860000000z^{9}t^{5}+1890640000z^{8}t^{6}+2932160000z^{7}t^{7}+3287296000z^{6}t^{8}+2680272000z^{5}t^{9}+1573011600z^{4}t^{10}+645553600z^{3}t^{11}-2405000000z^{2}w^{12}-16164000000z^{2}w^{11}t+95799800000z^{2}w^{10}t^{2}+1216021600000z^{2}w^{9}t^{3}+1703054710000z^{2}w^{8}t^{4}-5749672880000z^{2}w^{7}t^{5}-10704964500000z^{2}w^{6}t^{6}+1110162552000z^{2}w^{5}t^{7}+10165394152500z^{2}w^{4}t^{8}+2310111485200z^{2}w^{3}t^{9}-2373790073620z^{2}w^{2}t^{10}-480896488800z^{2}wt^{11}+15637985154z^{2}t^{12}-1165000000zw^{13}-8892000000zw^{12}t-19092500000zw^{11}t^{2}+654553200000zw^{10}t^{3}+2032256650000zw^{9}t^{4}-1376146800000zw^{8}t^{5}-7938208115000zw^{7}t^{6}-2514568216000zw^{6}t^{7}+8117193186500zw^{5}t^{8}+4182896523600zw^{4}t^{9}-3148326431750zw^{3}t^{10}-1711012049320zw^{2}t^{11}+410739458222zwt^{12}+188381434352zt^{13}-1320000000w^{14}-9363000000w^{13}t+40783700000w^{12}t^{2}+703078500000w^{11}t^{3}+924222740000w^{10}t^{4}-4656081290000w^{9}t^{5}-6769716055000w^{8}t^{6}+8354419091000w^{7}t^{7}+15096056962000w^{6}t^{8}-3749367053700w^{5}t^{9}-11542757584130w^{4}t^{10}-200922365090w^{3}t^{11}+2964530547936w^{2}t^{12}+108437148650wt^{13}-161599279914t^{14}}{t^{8}(1475xzt^{4}+500xw^{5}-7000xw^{4}t+8384xw^{3}t^{2}-7750xw^{2}t^{3}+1496xwt^{4}-1500xt^{5}+4500yzw^{4}-24720yzw^{3}t+24976yzw^{2}t^{2}-17540yzwt^{3}+816yzt^{4}+800yw^{5}-5140yw^{4}t+4734yw^{3}t^{2}-1988yw^{2}t^{3}-4414ywt^{4}+883yt^{5}+80z^{4}t^{2}+320z^{3}t^{3}+2900z^{2}w^{4}-18840z^{2}w^{3}t+19732z^{2}w^{2}t^{2}-11840z^{2}wt^{3}-814z^{2}t^{4}-500zw^{5}-3280zw^{4}t+1490zw^{3}t^{2}-1664zw^{2}t^{3}-620zwt^{4}+1492zt^{5}+1800w^{6}-13500w^{5}t+16958w^{4}t^{2}+1990w^{3}t^{3}-15770w^{2}t^{4}+13010wt^{5}-1488t^{6})}$

Map of degree 1 from the embedded model of this modular curve to the plane model of the modular curve 40.96.3.bf.1 :

$\displaystyle X$ $=$ $\displaystyle x$
$\displaystyle Y$ $=$ $\displaystyle \frac{2}{5}t$
$\displaystyle Z$ $=$ $\displaystyle 2y$

Equation of the image curve:

$0$ $=$ $ 40X^{5}Y^{2}+8X^{6}Z+120X^{4}Y^{2}Z+20X^{5}Z^{2}+80X^{3}Y^{2}Z^{2}+24X^{4}Z^{3}-40X^{2}Y^{2}Z^{3}+16X^{3}Z^{4}-50XY^{2}Z^{4}+6X^{2}Z^{5}-10Y^{2}Z^{5}+XZ^{6} $

Map of degree 1 from the embedded model of this modular curve to the Weierstrass model of the modular curve 40.96.3.bf.1 :

$\displaystyle X$ $=$ $\displaystyle -x^{3}-3x^{2}y-4xy^{2}-2y^{3}$
$\displaystyle Y$ $=$ $\displaystyle -2x^{11}t-24x^{10}yt-124x^{9}y^{2}t-360x^{8}y^{3}t-608x^{7}y^{4}t-448x^{6}y^{5}t+448x^{5}y^{6}t+1664x^{4}y^{7}t+2208x^{3}y^{8}t+1664x^{2}y^{9}t+704xy^{10}t+128y^{11}t$
$\displaystyle Z$ $=$ $\displaystyle x^{2}y+2xy^{2}+2y^{3}$

Modular covers

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
56.96.0-8.c.1.2 $56$ $2$ $2$ $0$ $0$
280.96.0-8.c.1.7 $280$ $2$ $2$ $0$ $?$
280.96.1-40.o.1.5 $280$ $2$ $2$ $1$ $?$
280.96.1-40.o.1.8 $280$ $2$ $2$ $1$ $?$
280.96.2-40.a.1.10 $280$ $2$ $2$ $2$ $?$
280.96.2-40.a.1.12 $280$ $2$ $2$ $2$ $?$

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

Covering curve Level Index Degree Genus
280.384.5-40.ba.1.3 $280$ $2$ $2$ $5$
280.384.5-40.ba.1.5 $280$ $2$ $2$ $5$
280.384.5-40.ba.2.4 $280$ $2$ $2$ $5$
280.384.5-40.ba.2.7 $280$ $2$ $2$ $5$
280.384.5-40.bb.1.3 $280$ $2$ $2$ $5$
280.384.5-40.bb.1.5 $280$ $2$ $2$ $5$
280.384.5-40.bb.2.2 $280$ $2$ $2$ $5$
280.384.5-40.bb.2.5 $280$ $2$ $2$ $5$
280.384.5-280.hb.1.5 $280$ $2$ $2$ $5$
280.384.5-280.hb.1.12 $280$ $2$ $2$ $5$
280.384.5-280.hb.2.7 $280$ $2$ $2$ $5$
280.384.5-280.hb.2.10 $280$ $2$ $2$ $5$
280.384.5-280.hc.1.7 $280$ $2$ $2$ $5$
280.384.5-280.hc.1.10 $280$ $2$ $2$ $5$
280.384.5-280.hc.2.5 $280$ $2$ $2$ $5$
280.384.5-280.hc.2.12 $280$ $2$ $2$ $5$