Properties

Label 84.192.5-42.a.1.47
Level $84$
Index $192$
Genus $5$
Cusps $8$
$\Q$-cusps $8$

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Invariants

Level: $84$ $\SL_2$-level: $84$ Newform level: $42$
Index: $192$ $\PSL_2$-index:$96$
Genus: $5 = 1 + \frac{ 96 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 8 }{2}$
Cusps: $8$ (all of which are rational) Cusp widths $1\cdot2\cdot3\cdot6\cdot7\cdot14\cdot21\cdot42$ Cusp orbits $1^{8}$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $3 \le \gamma \le 5$
$\overline{\Q}$-gonality: $3 \le \gamma \le 5$
Rational cusps: $8$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 42G5

Level structure

$\GL_2(\Z/84\Z)$-generators: $\begin{bmatrix}7&60\\58&65\end{bmatrix}$, $\begin{bmatrix}27&80\\40&53\end{bmatrix}$, $\begin{bmatrix}36&37\\23&22\end{bmatrix}$, $\begin{bmatrix}41&28\\78&61\end{bmatrix}$, $\begin{bmatrix}52&59\\55&42\end{bmatrix}$, $\begin{bmatrix}59&24\\32&79\end{bmatrix}$
Contains $-I$: no $\quad$ (see 42.96.5.a.1 for the level structure with $-I$)
Cyclic 84-isogeny field degree: $2$
Cyclic 84-torsion field degree: $48$
Full 84-torsion field degree: $48384$

Models

Canonical model in $\mathbb{P}^{ 4 }$ defined by 3 equations

$ 0 $ $=$ $ x^{2} - x w + x t + y t $
$=$ $x^{2} + x z + 2 x w + y t - z^{2} - 2 z w - w^{2}$
$=$ $x^{2} + y^{2} + 2 y z + 2 y w - y t + z^{2} + 2 z w - z t$
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Rational points

This modular curve has 8 rational cusps but no known non-cuspidal rational points. The following are the coordinates of the rational cusps on this modular curve.

Canonical model
$(0:0:-1:1:1)$, $(1/3:-1/6:-1/6:5/6:1)$, $(0:1:-1:1:0)$, $(1:-2:1:1:0)$, $(-1/3:1/6:1/6:1/6:1)$, $(1:1:-2:1:0)$, $(0:-1:-1:1:0)$, $(0:0:0:0:1)$

Maps to other modular curves

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

$\displaystyle j$ $=$ $\displaystyle \frac{-1101204000yz^{2}w^{9}+769937616xyw^{10}-2473473600yzw^{10}-2076263568z^{2}w^{10}+1805178224xw^{11}-1312033824yw^{11}-4363352352zw^{11}-2226851984w^{12}+3375732240yz^{2}w^{8}t-7481495504xyw^{9}t+5059358928yzw^{9}t-2224674576z^{2}w^{9}t+637202672xw^{10}t+4332162928yw^{10}t-2866362624zw^{10}t+1573843584w^{11}t+40513615200yz^{2}w^{7}t^{2}-41986389168xyw^{8}t^{2}+90289768464yzw^{8}t^{2}+71611914960z^{2}w^{8}t^{2}-66658243360xw^{9}t^{2}+50922213632yw^{9}t^{2}+141552055152zw^{9}t^{2}+64696335456w^{10}t^{2}-84131529840yz^{2}w^{6}t^{3}+94680843888xyw^{7}t^{3}-184954443408yzw^{7}t^{3}-102846908976z^{2}w^{7}t^{3}+139134320784xw^{8}t^{3}-179961485232yw^{8}t^{3}-229062506496zw^{8}t^{3}-149322391280w^{9}t^{3}-65404144400yz^{2}w^{5}t^{4}-64657507936xyw^{6}t^{4}-275538610864yzw^{6}t^{4}-404471962768z^{2}w^{6}t^{4}+283872442144xw^{7}t^{4}-138716908928yw^{7}t^{4}-728395806992zw^{7}t^{4}-189564572464w^{8}t^{4}+349910930960yz^{2}w^{4}t^{5}-230210553200xyw^{5}t^{5}+1098616893328yzw^{5}t^{5}+1042142507552z^{2}w^{5}t^{5}-1124585022912xw^{6}t^{5}+1174192396032yw^{6}t^{5}+2060241092688zw^{6}t^{5}+863050363056w^{7}t^{5}-306811384560yz^{2}w^{3}t^{6}+444699730512xyw^{4}t^{6}-930701159904yzw^{4}t^{6}-704274317872z^{2}w^{4}t^{6}+1204755984192xw^{5}t^{6}-1482336677680yw^{5}t^{6}-1486108944816zw^{5}t^{6}-876855455296w^{6}t^{6}+55178056000yz^{2}w^{2}t^{7}-290351294784xyw^{3}t^{7}-66344877376yzw^{3}t^{7}-226399477392z^{2}w^{3}t^{7}-342853547984xw^{4}t^{7}+344197675120yw^{4}t^{7}-410738278480zw^{4}t^{7}+177772535440w^{5}t^{7}+32079604400yz^{2}wt^{8}+86979125168xyw^{2}t^{8}+419469380720yzw^{2}t^{8}+490794373216z^{2}w^{2}t^{8}-285842029152xw^{3}t^{8}+606409820608yw^{3}t^{8}+1057266016096zw^{3}t^{8}+221840899680w^{4}t^{8}-10173090480yz^{2}t^{9}-10629427568xywt^{9}-178987210096yzwt^{9}-208058806640z^{2}wt^{9}+265598679184xw^{2}t^{9}-498748197968yw^{2}t^{9}-495548508720zw^{2}t^{9}-135234251696w^{3}t^{9}-126594064xyt^{10}+21875600944yzt^{10}+27703743328z^{2}t^{10}-83137846432xwt^{10}+140392458576ywt^{10}+78803719088zwt^{10}+21413254944w^{2}t^{10}+9492339776xt^{11}-13658082080yt^{11}-1737168448zt^{11}-240wt^{11}+16t^{12}}{-4448yz^{2}w^{8}t+17536xyw^{9}t-8768yzw^{9}t+3152z^{2}w^{9}t-12352xw^{10}t-4320yw^{10}t+6176zw^{10}t+3024w^{11}t+59552yz^{2}w^{7}t^{2}-246848xyw^{8}t^{2}+129072yzw^{8}t^{2}-55600z^{2}w^{8}t^{2}+247232xw^{9}t^{2}+74672yw^{9}t^{2}-103616zw^{9}t^{2}-55504w^{10}t^{2}-132640yz^{2}w^{6}t^{3}+627936xyw^{7}t^{3}-386464yzw^{7}t^{3}+268176z^{2}w^{7}t^{3}-1524176xw^{8}t^{3}-375024yw^{8}t^{3}+459440zw^{8}t^{3}+288992w^{9}t^{3}-799216yz^{2}w^{5}t^{4}+3643248xyw^{6}t^{4}-1642000yzw^{6}t^{4}+5936z^{2}w^{6}t^{4}+1846592xw^{7}t^{4}-19280yw^{7}t^{4}+182112zw^{7}t^{4}-8896w^{8}t^{4}+2680744yz^{2}w^{4}t^{5}-15969488xyw^{5}t^{5}+8393512yzw^{5}t^{5}-2555496z^{2}w^{5}t^{5}+11289696xw^{6}t^{5}+4655040yw^{6}t^{5}-4204664zw^{6}t^{5}-3263024w^{7}t^{5}-509900yz^{2}w^{3}t^{6}+9835120xyw^{4}t^{6}-4802860yzw^{4}t^{6}+5910668z^{2}w^{4}t^{6}-33941088xw^{5}t^{6}-10263984yw^{5}t^{6}+6877964zw^{5}t^{6}+6473072w^{6}t^{6}-618744yz^{2}w^{2}t^{7}+9024300xyw^{3}t^{7}-11762024yzw^{3}t^{7}-10781672z^{2}w^{3}t^{7}+29636740xw^{4}t^{7}+2007608yw^{4}t^{7}-13971664zw^{4}t^{7}-4031968w^{5}t^{7}-1133694yz^{2}wt^{8}-1489758xyw^{2}t^{8}+12120974yzw^{2}t^{8}+14161908z^{2}w^{2}t^{8}-10137902xw^{3}t^{8}+17107190yw^{3}t^{8}+27609696zw^{3}t^{8}+3293846w^{4}t^{8}+559595yz^{2}t^{9}-3110813xywt^{9}-6953923yzwt^{9}-9022495z^{2}wt^{9}+1087587xw^{2}t^{9}-22679769yw^{2}t^{9}-22311507zw^{2}t^{9}-2425095w^{3}t^{9}+745595xyt^{10}+2100788yzt^{10}+2217743z^{2}t^{10}-518593xwt^{10}+9341088ywt^{10}+7258392zwt^{10}+673864w^{2}t^{10}+176194xt^{11}-1199368yt^{11}-701698zt^{11}}$

Modular covers

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

Factor curve Level Index Degree Genus Rank
12.24.0-6.a.1.6 $12$ $8$ $8$ $0$ $0$
$X_0(7)$ $7$ $24$ $12$ $0$ $0$

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
12.24.0-6.a.1.6 $12$ $8$ $8$ $0$ $0$

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

Covering curve Level Index Degree Genus
84.384.9-42.c.1.20 $84$ $2$ $2$ $9$
84.384.9-42.c.2.23 $84$ $2$ $2$ $9$
84.384.9-42.c.3.14 $84$ $2$ $2$ $9$
84.384.9-42.c.4.20 $84$ $2$ $2$ $9$
84.384.11-42.a.1.26 $84$ $2$ $2$ $11$
84.384.11-42.g.1.12 $84$ $2$ $2$ $11$
84.384.11-42.k.1.11 $84$ $2$ $2$ $11$
84.384.11-42.l.1.16 $84$ $2$ $2$ $11$
84.384.11-42.o.1.23 $84$ $2$ $2$ $11$
84.384.11-42.o.2.20 $84$ $2$ $2$ $11$
84.384.11-42.o.3.20 $84$ $2$ $2$ $11$
84.384.11-42.o.4.14 $84$ $2$ $2$ $11$
84.384.9-84.s.1.13 $84$ $2$ $2$ $9$
84.384.9-84.s.2.15 $84$ $2$ $2$ $9$
84.384.9-84.s.3.9 $84$ $2$ $2$ $9$
84.384.9-84.s.4.11 $84$ $2$ $2$ $9$
84.384.11-84.z.1.26 $84$ $2$ $2$ $11$
84.384.11-84.bl.1.1 $84$ $2$ $2$ $11$
84.384.11-84.bm.1.5 $84$ $2$ $2$ $11$
84.384.11-84.bv.1.31 $84$ $2$ $2$ $11$
84.384.11-84.bw.1.7 $84$ $2$ $2$ $11$
84.384.11-84.bx.1.13 $84$ $2$ $2$ $11$
84.384.11-84.ci.1.25 $84$ $2$ $2$ $11$
84.384.11-84.cj.1.9 $84$ $2$ $2$ $11$
84.384.11-84.ck.1.11 $84$ $2$ $2$ $11$
84.384.11-84.cl.1.23 $84$ $2$ $2$ $11$
84.384.11-84.cm.1.3 $84$ $2$ $2$ $11$
84.384.11-84.cn.1.5 $84$ $2$ $2$ $11$
84.384.11-84.cq.1.15 $84$ $2$ $2$ $11$
84.384.11-84.cq.2.11 $84$ $2$ $2$ $11$
84.384.11-84.cq.3.11 $84$ $2$ $2$ $11$
84.384.11-84.cq.4.5 $84$ $2$ $2$ $11$
84.384.11-84.cr.1.30 $84$ $2$ $2$ $11$
84.384.11-84.cr.2.26 $84$ $2$ $2$ $11$
84.384.11-84.cr.3.26 $84$ $2$ $2$ $11$
84.384.11-84.cr.4.19 $84$ $2$ $2$ $11$
84.384.11-84.cs.1.29 $84$ $2$ $2$ $11$
84.384.11-84.cs.2.28 $84$ $2$ $2$ $11$
84.384.11-84.cs.3.25 $84$ $2$ $2$ $11$
84.384.11-84.cs.4.22 $84$ $2$ $2$ $11$
84.384.13-84.v.1.30 $84$ $2$ $2$ $13$
84.384.13-84.v.2.27 $84$ $2$ $2$ $13$
84.384.13-84.v.3.26 $84$ $2$ $2$ $13$
84.384.13-84.v.4.21 $84$ $2$ $2$ $13$
84.384.13-84.w.1.29 $84$ $2$ $2$ $13$
84.384.13-84.w.2.28 $84$ $2$ $2$ $13$
84.384.13-84.w.3.25 $84$ $2$ $2$ $13$
84.384.13-84.w.4.22 $84$ $2$ $2$ $13$
84.384.13-84.x.1.14 $84$ $2$ $2$ $13$
84.384.13-84.y.1.26 $84$ $2$ $2$ $13$
84.384.13-84.z.1.22 $84$ $2$ $2$ $13$
84.384.13-84.ba.1.24 $84$ $2$ $2$ $13$
84.384.13-84.bb.1.10 $84$ $2$ $2$ $13$
84.384.13-84.bc.1.18 $84$ $2$ $2$ $13$
84.384.13-84.bd.1.30 $84$ $2$ $2$ $13$
84.384.13-84.be.1.48 $84$ $2$ $2$ $13$
168.384.9-168.drs.1.1 $168$ $2$ $2$ $9$
168.384.9-168.drs.2.7 $168$ $2$ $2$ $9$
168.384.9-168.drs.3.3 $168$ $2$ $2$ $9$
168.384.9-168.drs.4.15 $168$ $2$ $2$ $9$
168.384.9-168.drt.1.3 $168$ $2$ $2$ $9$
168.384.9-168.drt.2.3 $168$ $2$ $2$ $9$
168.384.9-168.drt.3.7 $168$ $2$ $2$ $9$
168.384.9-168.drt.4.7 $168$ $2$ $2$ $9$
168.384.11-168.dn.1.33 $168$ $2$ $2$ $11$
168.384.11-168.eo.1.33 $168$ $2$ $2$ $11$
168.384.11-168.jc.1.17 $168$ $2$ $2$ $11$
168.384.11-168.jd.1.5 $168$ $2$ $2$ $11$
168.384.11-168.pk.1.33 $168$ $2$ $2$ $11$
168.384.11-168.pl.1.33 $168$ $2$ $2$ $11$
168.384.11-168.pm.1.5 $168$ $2$ $2$ $11$
168.384.11-168.pn.1.9 $168$ $2$ $2$ $11$
168.384.11-168.rw.1.33 $168$ $2$ $2$ $11$
168.384.11-168.rx.1.33 $168$ $2$ $2$ $11$
168.384.11-168.ry.1.17 $168$ $2$ $2$ $11$
168.384.11-168.rz.1.5 $168$ $2$ $2$ $11$
168.384.11-168.sa.1.33 $168$ $2$ $2$ $11$
168.384.11-168.sb.1.33 $168$ $2$ $2$ $11$
168.384.11-168.sc.1.5 $168$ $2$ $2$ $11$
168.384.11-168.sd.1.9 $168$ $2$ $2$ $11$
168.384.11-168.si.1.3 $168$ $2$ $2$ $11$
168.384.11-168.si.2.3 $168$ $2$ $2$ $11$
168.384.11-168.si.3.7 $168$ $2$ $2$ $11$
168.384.11-168.si.4.7 $168$ $2$ $2$ $11$
168.384.11-168.sj.1.1 $168$ $2$ $2$ $11$
168.384.11-168.sj.2.7 $168$ $2$ $2$ $11$
168.384.11-168.sj.3.3 $168$ $2$ $2$ $11$
168.384.11-168.sj.4.15 $168$ $2$ $2$ $11$
168.384.11-168.sk.1.8 $168$ $2$ $2$ $11$
168.384.11-168.sk.2.8 $168$ $2$ $2$ $11$
168.384.11-168.sk.3.16 $168$ $2$ $2$ $11$
168.384.11-168.sk.4.16 $168$ $2$ $2$ $11$
168.384.11-168.sl.1.4 $168$ $2$ $2$ $11$
168.384.11-168.sl.2.16 $168$ $2$ $2$ $11$
168.384.11-168.sl.3.8 $168$ $2$ $2$ $11$
168.384.11-168.sl.4.32 $168$ $2$ $2$ $11$
168.384.13-168.ow.1.4 $168$ $2$ $2$ $13$
168.384.13-168.ow.2.16 $168$ $2$ $2$ $13$
168.384.13-168.ow.3.8 $168$ $2$ $2$ $13$
168.384.13-168.ow.4.32 $168$ $2$ $2$ $13$
168.384.13-168.ox.1.8 $168$ $2$ $2$ $13$
168.384.13-168.ox.2.8 $168$ $2$ $2$ $13$
168.384.13-168.ox.3.16 $168$ $2$ $2$ $13$
168.384.13-168.ox.4.16 $168$ $2$ $2$ $13$
168.384.13-168.oy.1.2 $168$ $2$ $2$ $13$
168.384.13-168.oz.1.2 $168$ $2$ $2$ $13$
168.384.13-168.pa.1.2 $168$ $2$ $2$ $13$
168.384.13-168.pb.1.2 $168$ $2$ $2$ $13$
168.384.13-168.pc.1.2 $168$ $2$ $2$ $13$
168.384.13-168.pd.1.2 $168$ $2$ $2$ $13$
168.384.13-168.pe.1.2 $168$ $2$ $2$ $13$
168.384.13-168.pf.1.2 $168$ $2$ $2$ $13$