Invariants
Level: | $8$ | $\SL_2$-level: | $8$ | Newform level: | $32$ | ||
Index: | $24$ | $\PSL_2$-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 | $4^{2}\cdot8^{2}$ | 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: | 8C1 |
Rouse and Zureick-Brown (RZB) label: | X146 |
Rouse, Sutherland, and Zureick-Brown (RSZB) label: | 8.24.1.16 |
Level structure
$\GL_2(\Z/8\Z)$-generators: | $\begin{bmatrix}1&3\\6&3\end{bmatrix}$, $\begin{bmatrix}5&4\\2&3\end{bmatrix}$, $\begin{bmatrix}7&0\\0&3\end{bmatrix}$ |
$\GL_2(\Z/8\Z)$-subgroup: | $C_2^4:C_4$ |
Contains $-I$: | yes |
Quadratic refinements: | none in database |
Cyclic 8-isogeny field degree: | $4$ |
Cyclic 8-torsion field degree: | $16$ |
Full 8-torsion field degree: | $64$ |
Jacobian
Conductor: | $2^{5}$ |
Simple: | yes |
Squarefree: | yes |
Decomposition: | $1$ |
Newforms: | 32.2.a.a |
Models
Weierstrass model Weierstrass model
$ y^{2} $ | $=$ | $ x^{3} - 11x - 14 $ |
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.
Weierstrass model |
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$(0:1:0)$, $(-2:0:1)$ |
Maps to other modular curves
$j$-invariant map of degree 24 from the Weierstrass model of this modular curve to the modular curve $X(1)$ :
$\displaystyle j$ | $=$ | $\displaystyle 2^4\,\frac{12x^{2}y^{6}+2787x^{2}y^{4}z^{2}+141696x^{2}y^{2}z^{4}+2054593x^{2}z^{6}+98xy^{6}z+14304xy^{4}z^{3}+604801xy^{2}z^{5}+7865854xz^{7}+y^{8}+528y^{6}z^{2}+39940y^{4}z^{4}+995324y^{2}z^{6}+7513337z^{8}}{z^{2}(x^{2}y^{4}+472x^{2}y^{2}z^{2}+19024x^{2}z^{4}+12xy^{4}z+2384xy^{2}z^{3}+72832xz^{5}+84y^{4}z^{2}+6144y^{2}z^{4}+69568z^{6})}$ |
Modular covers
Cover information
Click on a modular curve in the diagram to see information about it.
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This modular curve minimally covers the modular curves listed below.
Covered curve | Level | Index | Degree | Genus | Rank | Kernel decomposition |
---|---|---|---|---|---|---|
$X_{\mathrm{sp}}^+(4)$ | $4$ | $2$ | $2$ | $0$ | $0$ | full Jacobian |
8.12.0.u.1 | $8$ | $2$ | $2$ | $0$ | $0$ | full Jacobian |
8.12.1.d.1 | $8$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
This modular curve is minimally covered by the modular curves in the database listed below.
Covering curve | Level | Index | Degree | Genus | Rank | Kernel decomposition |
---|---|---|---|---|---|---|
8.48.1.h.2 | $8$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
8.48.1.w.1 | $8$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
8.48.1.bk.1 | $8$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
8.48.1.br.1 | $8$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
24.48.1.hh.1 | $24$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
24.48.1.hl.1 | $24$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
24.48.1.hx.1 | $24$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
24.48.1.ib.1 | $24$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
24.72.5.gr.1 | $24$ | $3$ | $3$ | $5$ | $1$ | $1^{4}$ |
24.96.5.dh.1 | $24$ | $4$ | $4$ | $5$ | $0$ | $1^{4}$ |
40.48.1.gl.1 | $40$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
40.48.1.gp.1 | $40$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
40.48.1.hb.1 | $40$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
40.48.1.hf.1 | $40$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
40.120.9.cz.1 | $40$ | $5$ | $5$ | $9$ | $2$ | $1^{6}\cdot2$ |
40.144.9.fd.1 | $40$ | $6$ | $6$ | $9$ | $0$ | $1^{6}\cdot2$ |
40.240.17.pr.1 | $40$ | $10$ | $10$ | $17$ | $5$ | $1^{12}\cdot2^{2}$ |
56.48.1.gj.1 | $56$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
56.48.1.gn.1 | $56$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
56.48.1.gz.1 | $56$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
56.48.1.hd.1 | $56$ | $2$ | $2$ | $1$ | $0$ | dimension zero |
56.192.13.dh.1 | $56$ | $8$ | $8$ | $13$ | $3$ | $1^{12}$ |
56.504.37.gr.1 | $56$ | $21$ | $21$ | $37$ | $13$ | $1^{8}\cdot2^{12}\cdot4$ |
56.672.49.gr.1 | $56$ | $28$ | $28$ | $49$ | $16$ | $1^{20}\cdot2^{12}\cdot4$ |
88.48.1.gj.1 | $88$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
88.48.1.gn.1 | $88$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
88.48.1.gz.1 | $88$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
88.48.1.hd.1 | $88$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
88.288.21.dh.1 | $88$ | $12$ | $12$ | $21$ | $?$ | not computed |
104.48.1.gl.1 | $104$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
104.48.1.gp.1 | $104$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
104.48.1.hb.1 | $104$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
104.48.1.hf.1 | $104$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
120.48.1.xj.1 | $120$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
120.48.1.xn.1 | $120$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
120.48.1.yp.1 | $120$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
120.48.1.yt.1 | $120$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
136.48.1.gl.1 | $136$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
136.48.1.gp.1 | $136$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
136.48.1.hb.1 | $136$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
136.48.1.hf.1 | $136$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
152.48.1.gj.1 | $152$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
152.48.1.gn.1 | $152$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
152.48.1.gz.1 | $152$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
152.48.1.hd.1 | $152$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
168.48.1.xh.1 | $168$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
168.48.1.xl.1 | $168$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
168.48.1.yn.1 | $168$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
168.48.1.yr.1 | $168$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
184.48.1.gj.1 | $184$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
184.48.1.gn.1 | $184$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
184.48.1.gz.1 | $184$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
184.48.1.hd.1 | $184$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
232.48.1.gl.1 | $232$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
232.48.1.gp.1 | $232$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
232.48.1.hb.1 | $232$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
232.48.1.hf.1 | $232$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
248.48.1.gj.1 | $248$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
248.48.1.gn.1 | $248$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
248.48.1.gz.1 | $248$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
248.48.1.hd.1 | $248$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
264.48.1.xh.1 | $264$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
264.48.1.xl.1 | $264$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
264.48.1.yn.1 | $264$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
264.48.1.yr.1 | $264$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
280.48.1.wl.1 | $280$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
280.48.1.wp.1 | $280$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
280.48.1.xr.1 | $280$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
280.48.1.xv.1 | $280$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
296.48.1.gl.1 | $296$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
296.48.1.gp.1 | $296$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
296.48.1.hb.1 | $296$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
296.48.1.hf.1 | $296$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
312.48.1.xj.1 | $312$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
312.48.1.xn.1 | $312$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
312.48.1.yp.1 | $312$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
312.48.1.yt.1 | $312$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
328.48.1.gl.1 | $328$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
328.48.1.gp.1 | $328$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
328.48.1.hb.1 | $328$ | $2$ | $2$ | $1$ | $?$ | dimension zero |
328.48.1.hf.1 | $328$ | $2$ | $2$ | $1$ | $?$ | dimension zero |