Properties

Label 8.48.0.h.1
Level $8$
Index $48$
Genus $0$
Analytic rank $0$
Cusps $10$
$\Q$-cusps $0$

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Invariants

Level: $8$ $\SL_2$-level: $8$
Index: $48$ $\PSL_2$-index:$48$
Genus: $0 = 1 + \frac{ 48 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 10 }{2}$
Cusps: $10$ (none of which are rational) Cusp widths $2^{4}\cdot4^{2}\cdot8^{4}$ Cusp orbits $2^{5}$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
$\Q$-gonality: $1$
$\overline{\Q}$-gonality: $1$
Rational cusps: $0$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 8O0
Sutherland and Zywina (SZ) label: 8O0-8i
Rouse and Zureick-Brown (RZB) label: X190
Rouse, Sutherland, and Zureick-Brown (RSZB) label: 8.48.0.138

Level structure

$\GL_2(\Z/8\Z)$-generators: $\begin{bmatrix}1&6\\0&7\end{bmatrix}$, $\begin{bmatrix}3&2\\4&7\end{bmatrix}$, $\begin{bmatrix}3&4\\0&5\end{bmatrix}$, $\begin{bmatrix}5&6\\0&5\end{bmatrix}$
$\GL_2(\Z/8\Z)$-subgroup: $C_2^2\times D_4$
Contains $-I$: yes
Quadratic refinements: 8.96.0-8.h.1.1, 8.96.0-8.h.1.2, 8.96.0-8.h.1.3, 8.96.0-8.h.1.4, 8.96.0-8.h.1.5, 8.96.0-8.h.1.6, 8.96.0-8.h.1.7, 8.96.0-8.h.1.8, 24.96.0-8.h.1.1, 24.96.0-8.h.1.2, 24.96.0-8.h.1.3, 24.96.0-8.h.1.4, 24.96.0-8.h.1.5, 24.96.0-8.h.1.6, 24.96.0-8.h.1.7, 24.96.0-8.h.1.8, 40.96.0-8.h.1.1, 40.96.0-8.h.1.2, 40.96.0-8.h.1.3, 40.96.0-8.h.1.4, 40.96.0-8.h.1.5, 40.96.0-8.h.1.6, 40.96.0-8.h.1.7, 40.96.0-8.h.1.8, 56.96.0-8.h.1.1, 56.96.0-8.h.1.2, 56.96.0-8.h.1.3, 56.96.0-8.h.1.4, 56.96.0-8.h.1.5, 56.96.0-8.h.1.6, 56.96.0-8.h.1.7, 56.96.0-8.h.1.8, 88.96.0-8.h.1.1, 88.96.0-8.h.1.2, 88.96.0-8.h.1.3, 88.96.0-8.h.1.4, 88.96.0-8.h.1.5, 88.96.0-8.h.1.6, 88.96.0-8.h.1.7, 88.96.0-8.h.1.8, 104.96.0-8.h.1.1, 104.96.0-8.h.1.2, 104.96.0-8.h.1.3, 104.96.0-8.h.1.4, 104.96.0-8.h.1.5, 104.96.0-8.h.1.6, 104.96.0-8.h.1.7, 104.96.0-8.h.1.8, 120.96.0-8.h.1.1, 120.96.0-8.h.1.2, 120.96.0-8.h.1.3, 120.96.0-8.h.1.4, 120.96.0-8.h.1.5, 120.96.0-8.h.1.6, 120.96.0-8.h.1.7, 120.96.0-8.h.1.8, 136.96.0-8.h.1.1, 136.96.0-8.h.1.2, 136.96.0-8.h.1.3, 136.96.0-8.h.1.4, 136.96.0-8.h.1.5, 136.96.0-8.h.1.6, 136.96.0-8.h.1.7, 136.96.0-8.h.1.8, 152.96.0-8.h.1.1, 152.96.0-8.h.1.2, 152.96.0-8.h.1.3, 152.96.0-8.h.1.4, 152.96.0-8.h.1.5, 152.96.0-8.h.1.6, 152.96.0-8.h.1.7, 152.96.0-8.h.1.8, 168.96.0-8.h.1.1, 168.96.0-8.h.1.2, 168.96.0-8.h.1.3, 168.96.0-8.h.1.4, 168.96.0-8.h.1.5, 168.96.0-8.h.1.6, 168.96.0-8.h.1.7, 168.96.0-8.h.1.8, 184.96.0-8.h.1.1, 184.96.0-8.h.1.2, 184.96.0-8.h.1.3, 184.96.0-8.h.1.4, 184.96.0-8.h.1.5, 184.96.0-8.h.1.6, 184.96.0-8.h.1.7, 184.96.0-8.h.1.8, 232.96.0-8.h.1.1, 232.96.0-8.h.1.2, 232.96.0-8.h.1.3, 232.96.0-8.h.1.4, 232.96.0-8.h.1.5, 232.96.0-8.h.1.6, 232.96.0-8.h.1.7, 232.96.0-8.h.1.8, 248.96.0-8.h.1.1, 248.96.0-8.h.1.2, 248.96.0-8.h.1.3, 248.96.0-8.h.1.4, 248.96.0-8.h.1.5, 248.96.0-8.h.1.6, 248.96.0-8.h.1.7, 248.96.0-8.h.1.8, 264.96.0-8.h.1.1, 264.96.0-8.h.1.2, 264.96.0-8.h.1.3, 264.96.0-8.h.1.4, 264.96.0-8.h.1.5, 264.96.0-8.h.1.6, 264.96.0-8.h.1.7, 264.96.0-8.h.1.8, 280.96.0-8.h.1.1, 280.96.0-8.h.1.2, 280.96.0-8.h.1.3, 280.96.0-8.h.1.4, 280.96.0-8.h.1.5, 280.96.0-8.h.1.6, 280.96.0-8.h.1.7, 280.96.0-8.h.1.8, 296.96.0-8.h.1.1, 296.96.0-8.h.1.2, 296.96.0-8.h.1.3, 296.96.0-8.h.1.4, 296.96.0-8.h.1.5, 296.96.0-8.h.1.6, 296.96.0-8.h.1.7, 296.96.0-8.h.1.8, 312.96.0-8.h.1.1, 312.96.0-8.h.1.2, 312.96.0-8.h.1.3, 312.96.0-8.h.1.4, 312.96.0-8.h.1.5, 312.96.0-8.h.1.6, 312.96.0-8.h.1.7, 312.96.0-8.h.1.8, 328.96.0-8.h.1.1, 328.96.0-8.h.1.2, 328.96.0-8.h.1.3, 328.96.0-8.h.1.4, 328.96.0-8.h.1.5, 328.96.0-8.h.1.6, 328.96.0-8.h.1.7, 328.96.0-8.h.1.8
Cyclic 8-isogeny field degree: $2$
Cyclic 8-torsion field degree: $8$
Full 8-torsion field degree: $32$

Models

This modular curve is isomorphic to $\mathbb{P}^1$.

Rational points

This modular curve has infinitely many rational points, including 4 stored non-cuspidal points.

Maps to other modular curves

$j$-invariant map of degree 48 to the modular curve $X(1)$ :

$\displaystyle j$ $=$ $\displaystyle 2^4\,\frac{(x-y)^{48}(x^{8}-4x^{7}y+16x^{6}y^{2}-56x^{5}y^{3}+120x^{4}y^{4}-112x^{3}y^{5}+64x^{2}y^{6}-32xy^{7}+16y^{8})^{3}(13x^{8}-140x^{7}y+688x^{6}y^{2}-1960x^{5}y^{3}+3480x^{4}y^{4}-3920x^{3}y^{5}+2752x^{2}y^{6}-1120xy^{7}+208y^{8})^{3}}{(x-y)^{48}(x^{2}-2y^{2})^{4}(x^{2}-4xy+2y^{2})^{8}(x^{2}-4xy+6y^{2})^{2}(x^{2}-2xy+2y^{2})^{8}(3x^{2}-4xy+2y^{2})^{2}}$

Modular covers

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Cover information

Click on a modular curve in the diagram to see information about it.

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
8.24.0.d.1 $8$ $2$ $2$ $0$ $0$
8.24.0.e.1 $8$ $2$ $2$ $0$ $0$
8.24.0.h.1 $8$ $2$ $2$ $0$ $0$

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

Covering curve Level Index Degree Genus
8.96.1.a.1 $8$ $2$ $2$ $1$
8.96.1.c.1 $8$ $2$ $2$ $1$
8.96.1.f.1 $8$ $2$ $2$ $1$
8.96.1.h.1 $8$ $2$ $2$ $1$
24.96.1.bu.1 $24$ $2$ $2$ $1$
24.96.1.bv.1 $24$ $2$ $2$ $1$
24.96.1.bw.1 $24$ $2$ $2$ $1$
24.96.1.bx.1 $24$ $2$ $2$ $1$
24.144.8.ez.2 $24$ $3$ $3$ $8$
24.192.7.dg.2 $24$ $4$ $4$ $7$
40.96.1.bu.1 $40$ $2$ $2$ $1$
40.96.1.bv.1 $40$ $2$ $2$ $1$
40.96.1.bw.1 $40$ $2$ $2$ $1$
40.96.1.bx.1 $40$ $2$ $2$ $1$
40.240.16.bh.2 $40$ $5$ $5$ $16$
40.288.15.dn.2 $40$ $6$ $6$ $15$
40.480.31.fb.2 $40$ $10$ $10$ $31$
56.96.1.bu.1 $56$ $2$ $2$ $1$
56.96.1.bv.1 $56$ $2$ $2$ $1$
56.96.1.bw.1 $56$ $2$ $2$ $1$
56.96.1.bx.1 $56$ $2$ $2$ $1$
56.384.23.dg.2 $56$ $8$ $8$ $23$
56.1008.70.ez.2 $56$ $21$ $21$ $70$
56.1344.93.ez.1 $56$ $28$ $28$ $93$
88.96.1.bu.1 $88$ $2$ $2$ $1$
88.96.1.bv.1 $88$ $2$ $2$ $1$
88.96.1.bw.1 $88$ $2$ $2$ $1$
88.96.1.bx.1 $88$ $2$ $2$ $1$
104.96.1.bu.1 $104$ $2$ $2$ $1$
104.96.1.bv.1 $104$ $2$ $2$ $1$
104.96.1.bw.1 $104$ $2$ $2$ $1$
104.96.1.bx.1 $104$ $2$ $2$ $1$
120.96.1.pg.1 $120$ $2$ $2$ $1$
120.96.1.ph.1 $120$ $2$ $2$ $1$
120.96.1.pi.1 $120$ $2$ $2$ $1$
120.96.1.pj.1 $120$ $2$ $2$ $1$
136.96.1.bu.1 $136$ $2$ $2$ $1$
136.96.1.bv.1 $136$ $2$ $2$ $1$
136.96.1.bw.1 $136$ $2$ $2$ $1$
136.96.1.bx.1 $136$ $2$ $2$ $1$
152.96.1.bu.1 $152$ $2$ $2$ $1$
152.96.1.bv.1 $152$ $2$ $2$ $1$
152.96.1.bw.1 $152$ $2$ $2$ $1$
152.96.1.bx.1 $152$ $2$ $2$ $1$
168.96.1.pg.1 $168$ $2$ $2$ $1$
168.96.1.ph.1 $168$ $2$ $2$ $1$
168.96.1.pi.1 $168$ $2$ $2$ $1$
168.96.1.pj.1 $168$ $2$ $2$ $1$
184.96.1.bu.1 $184$ $2$ $2$ $1$
184.96.1.bv.1 $184$ $2$ $2$ $1$
184.96.1.bw.1 $184$ $2$ $2$ $1$
184.96.1.bx.1 $184$ $2$ $2$ $1$
232.96.1.bu.1 $232$ $2$ $2$ $1$
232.96.1.bv.1 $232$ $2$ $2$ $1$
232.96.1.bw.1 $232$ $2$ $2$ $1$
232.96.1.bx.1 $232$ $2$ $2$ $1$
248.96.1.bu.1 $248$ $2$ $2$ $1$
248.96.1.bv.1 $248$ $2$ $2$ $1$
248.96.1.bw.1 $248$ $2$ $2$ $1$
248.96.1.bx.1 $248$ $2$ $2$ $1$
264.96.1.pg.1 $264$ $2$ $2$ $1$
264.96.1.ph.1 $264$ $2$ $2$ $1$
264.96.1.pi.1 $264$ $2$ $2$ $1$
264.96.1.pj.1 $264$ $2$ $2$ $1$
280.96.1.om.1 $280$ $2$ $2$ $1$
280.96.1.on.1 $280$ $2$ $2$ $1$
280.96.1.oo.1 $280$ $2$ $2$ $1$
280.96.1.op.1 $280$ $2$ $2$ $1$
296.96.1.bu.1 $296$ $2$ $2$ $1$
296.96.1.bv.1 $296$ $2$ $2$ $1$
296.96.1.bw.1 $296$ $2$ $2$ $1$
296.96.1.bx.1 $296$ $2$ $2$ $1$
312.96.1.pg.1 $312$ $2$ $2$ $1$
312.96.1.ph.1 $312$ $2$ $2$ $1$
312.96.1.pi.1 $312$ $2$ $2$ $1$
312.96.1.pj.1 $312$ $2$ $2$ $1$
328.96.1.bu.1 $328$ $2$ $2$ $1$
328.96.1.bv.1 $328$ $2$ $2$ $1$
328.96.1.bw.1 $328$ $2$ $2$ $1$
328.96.1.bx.1 $328$ $2$ $2$ $1$