Canonical model in $\mathbb{P}^{ 12 }$ defined by 55 equations
$ 0 $ | $=$ | $ x r + 2 y r + z r + 2 u r - u b - u d $ |
| $=$ | $x s + x a + x c - y b - z a - z b - t r + t d + u r - u a - u b - u d - v d$ |
| $=$ | $x r - x s - x a - x b - x c + x d + y a + y b + y c - z r - z c + z d - t d + u r + u s + u a - u c + v b$ |
| $=$ | $r s - 2 r a - r b - r c - r d + s^{2} - s a - s b - s c - s d + a b + a c + a d + b^{2} + b c + b d + c d$ |
| $=$ | $\cdots$ |
Singular plane model Singular plane model
$ 0 $ | $=$ | $ - 78124583152 x^{18} y^{6} - 468747498912 x^{18} y^{5} z - 1171868747280 x^{18} y^{4} z^{2} + \cdots + 14220441 z^{24} $ |
This modular curve has real points and $\Q_p$ points for $p$ not dividing the level, but no known rational points.
Maps to other modular curves
Map
of degree 3 from the canonical model of this modular curve to the canonical model of the modular curve
28.84.5.a.1
:
$\displaystyle X$ |
$=$ |
$\displaystyle -t$ |
$\displaystyle Y$ |
$=$ |
$\displaystyle -x-y-z$ |
$\displaystyle Z$ |
$=$ |
$\displaystyle w$ |
$\displaystyle W$ |
$=$ |
$\displaystyle r+s-b-c$ |
$\displaystyle T$ |
$=$ |
$\displaystyle s-a-b-d$ |
Equation of the image curve:
$0$ |
$=$ |
$ 3X^{2}-6XY-4Y^{2}+4XZ+3YZ-Z^{2} $ |
|
$=$ |
$ X^{2}-2XY+Y^{2}-XZ+8YZ-5Z^{2}+W^{2} $ |
|
$=$ |
$ 39X^{2}+6XY-3Y^{2}-32XZ+4YZ+15Z^{2}+2W^{2}-T^{2} $ |
Map
of degree 1 from the canonical model of this modular curve to the plane model of the modular curve
28.252.13.a.1
:
$\displaystyle X$ |
$=$ |
$\displaystyle b$ |
$\displaystyle Y$ |
$=$ |
$\displaystyle 7x$ |
$\displaystyle Z$ |
$=$ |
$\displaystyle 7y$ |
Equation of the image curve:
$0$ |
$=$ |
$ -78124583152X^{18}Y^{6}-468747498912X^{18}Y^{5}Z-1171868747280X^{18}Y^{4}Z^{2}-1562491663040X^{18}Y^{3}Z^{3}-1171868747280X^{18}Y^{2}Z^{4}-468747498912X^{18}YZ^{5}-78124583152X^{18}Z^{6}-3622324237952X^{16}Y^{8}-15474201673056X^{16}Y^{7}Z-17561889766400X^{16}Y^{6}Z^{2}+16022457307360X^{16}Y^{5}Z^{3}+55952697321920X^{16}Y^{4}Z^{4}+51095322117728X^{16}Y^{3}Z^{5}+17689545519744X^{16}Y^{2}Z^{6}-238893353440X^{16}YZ^{7}-1053344438720X^{16}Z^{8}-57385859792240X^{14}Y^{10}-232287141851072X^{14}Y^{9}Z-262989935027036X^{14}Y^{8}Z^{2}+80781708405608X^{14}Y^{7}Z^{3}+326518661351372X^{14}Y^{6}Z^{4}+137515948034528X^{14}Y^{5}Z^{5}-119736837272276X^{14}Y^{4}Z^{6}-251360984093688X^{14}Y^{3}Z^{7}-278555398441180X^{14}Y^{2}Z^{8}-163108726073104X^{14}YZ^{9}-36309826396368X^{14}Z^{10}+83979649170760X^{12}Y^{12}+241025826272280X^{12}Y^{11}Z+542015426989337X^{12}Y^{10}Z^{2}+877830182311964X^{12}Y^{9}Z^{3}+744572070177628X^{12}Y^{8}Z^{4}+752275234454212X^{12}Y^{7}Z^{5}+571958819517750X^{12}Y^{6}Z^{6}-764229725347116X^{12}Y^{5}Z^{7}-1169216242808516X^{12}Y^{4}Z^{8}+97765991935780X^{12}Y^{3}Z^{9}+888963229651273X^{12}Y^{2}Z^{10}+627338111849232X^{12}YZ^{11}+169747245959816X^{12}Z^{12}-39752074453028X^{10}Y^{14}-40586410236148X^{10}Y^{13}Z-408283756167462X^{10}Y^{12}Z^{2}-906589776333234X^{10}Y^{11}Z^{3}-1632458194813264X^{10}Y^{10}Z^{4}-1806605700670288X^{10}Y^{9}Z^{5}-930083734699840X^{10}Y^{8}Z^{6}-2634924274592008X^{10}Y^{7}Z^{7}-3822185881900428X^{10}Y^{6}Z^{8}+504059999541840X^{10}Y^{5}Z^{9}+3167849975250394X^{10}Y^{4}Z^{10}+809498888040682X^{10}Y^{3}Z^{11}-415005940728736X^{10}Y^{2}Z^{12}-82867902087740X^{10}YZ^{13}-75632403746004X^{10}Z^{14}+8774856773144X^{8}Y^{16}-7632496210220X^{8}Y^{15}Z+147809084190201X^{8}Y^{14}Z^{2}+147029027802076X^{8}Y^{13}Z^{3}+958126342929455X^{8}Y^{12}Z^{4}+1036275504818330X^{8}Y^{11}Z^{5}+1045828773162544X^{8}Y^{10}Z^{6}+3093261602151980X^{8}Y^{9}Z^{7}+5844291029724714X^{8}Y^{8}Z^{8}+1623426440855408X^{8}Y^{7}Z^{9}-4778697124452475X^{8}Y^{6}Z^{10}-879956745630172X^{8}Y^{5}Z^{11}+1344809314344111X^{8}Y^{4}Z^{12}-479406184371646X^{8}Y^{3}Z^{13}+53510898343826X^{8}Y^{2}Z^{14}+4083171303988X^{8}YZ^{15}+13478629231648X^{8}Z^{16}-983406037971X^{6}Y^{18}+2341977412698X^{6}Y^{17}Z-24935667145662X^{6}Y^{16}Z^{2}+20262321744504X^{6}Y^{15}Z^{3}-239194774744702X^{6}Y^{14}Z^{4}-108864234981054X^{6}Y^{13}Z^{5}-721886186109557X^{6}Y^{12}Z^{6}-457993606867580X^{6}Y^{11}Z^{7}-2268423122659274X^{6}Y^{10}Z^{8}-2094996064904162X^{6}Y^{9}Z^{9}+1924919293076801X^{6}Y^{8}Z^{10}+683543707689304X^{6}Y^{7}Z^{11}-875250089125454X^{6}Y^{6}Z^{12}+368647278000750X^{6}Y^{5}Z^{13}+35148238712909X^{6}Y^{4}Z^{14}-36203429825556X^{6}Y^{3}Z^{15}+13550699622985X^{6}Y^{2}Z^{16}-1785296524648X^{6}YZ^{17}-1229979405627X^{6}Z^{18}+53701626538X^{4}Y^{20}-151226960108X^{4}Y^{19}Z+1847619340644X^{4}Y^{18}Z^{2}-4079633634426X^{4}Y^{17}Z^{3}+22842494786461X^{4}Y^{16}Z^{4}-27717181602110X^{4}Y^{15}Z^{5}+165584736832921X^{4}Y^{14}Z^{6}-86776064308080X^{4}Y^{13}Z^{7}+371848758302315X^{4}Y^{12}Z^{8}+494624012412838X^{4}Y^{11}Z^{9}-106229436404819X^{4}Y^{10}Z^{10}-276273997941256X^{4}Y^{9}Z^{11}+70031022493761X^{4}Y^{8}Z^{12}+83845230068446X^{4}Y^{7}Z^{13}-9118184690405X^{4}Y^{6}Z^{14}-3329796602104X^{4}Y^{5}Z^{15}+3961456623607X^{4}Y^{4}Z^{16}-1267599542874X^{4}Y^{3}Z^{17}-793419772005X^{4}Y^{2}Z^{18}+167352427242X^{4}YZ^{19}+64319831478X^{4}Z^{20}-1166318475X^{2}Y^{22}+226319338X^{2}Y^{21}Z-53999655577X^{2}Y^{20}Z^{2}+246038082738X^{2}Y^{19}Z^{3}-1260044428762X^{2}Y^{18}Z^{4}+3381390786774X^{2}Y^{17}Z^{5}-8535459679999X^{2}Y^{16}Z^{6}+8684938092096X^{2}Y^{15}Z^{7}-947704877882X^{2}Y^{14}Z^{8}-13981265427976X^{2}Y^{13}Z^{9}+5072355894214X^{2}Y^{12}Z^{10}+51588162009524X^{2}Y^{11}Z^{11}+22225463215032X^{2}Y^{10}Z^{12}-30137982569968X^{2}Y^{9}Z^{13}-13451420723230X^{2}Y^{8}Z^{14}+8864338873264X^{2}Y^{7}Z^{15}+3692263244509X^{2}Y^{6}Z^{16}-1213468881618X^{2}Y^{5}Z^{17}-393960159901X^{2}Y^{4}Z^{18}+130111783466X^{2}Y^{3}Z^{19}+26586386442X^{2}Y^{2}Z^{20}-8598321270X^{2}YZ^{21}-1726241139X^{2}Z^{22}+4198401Y^{24}+116936430Y^{23}Z+375358621Y^{22}Z^{2}-4722987898Y^{21}Z^{3}+29363852928Y^{20}Z^{4}-95573622758Y^{19}Z^{5}+155412836549Y^{18}Z^{6}-49051120506Y^{17}Z^{7}-442214526045Y^{16}Z^{8}+796807035764Y^{15}Z^{9}+514851646194Y^{14}Z^{10}-1620052975532Y^{13}Z^{11}-737001610788Y^{12}Z^{12}+1483996895084Y^{11}Z^{13}+1031997803090Y^{10}Z^{14}-301345204652Y^{9}Z^{15}-363854314701Y^{8}Z^{16}+18283231486Y^{7}Z^{17}+75947663713Y^{6}Z^{18}+8889789542Y^{5}Z^{19}-7643585612Y^{4}Z^{20}-1688189670Y^{3}Z^{21}+383710329Y^{2}Z^{22}+158630886YZ^{23}+14220441Z^{24} $ |
This modular curve minimally covers the modular curves listed below.