This curve is isomorphic to the quotient of the modular curve $X_0(30)$ by the Atkin-Lehner involution $w_{10}$.
Minimal equation
Minimal equation
Simplified equation
$y^2 + (x^3 + 1)y = x^5 - 4x^4 - 9x^3 + 28x^2 - 6x - 16$ | (homogenize, simplify) |
$y^2 + (x^3 + z^3)y = x^5z - 4x^4z^2 - 9x^3z^3 + 28x^2z^4 - 6xz^5 - 16z^6$ | (dehomogenize, simplify) |
$y^2 = x^6 + 4x^5 - 16x^4 - 34x^3 + 112x^2 - 24x - 63$ | (homogenize, minimize) |
Invariants
Conductor: | \( N \) | \(=\) | \(450\) | \(=\) | \( 2 \cdot 3^{2} \cdot 5^{2} \) | magma: Conductor(LSeries(C)); Factorization($1);
|
Discriminant: | \( \Delta \) | \(=\) | \(36450\) | \(=\) | \( 2 \cdot 3^{6} \cdot 5^{2} \) | magma: Discriminant(C); Factorization(Integers()!$1);
|
Igusa-Clebsch invariants
Igusa invariants
G2 invariants
\( I_2 \) | \(=\) | \(23444\) | \(=\) | \( 2^{2} \cdot 5861 \) |
\( I_4 \) | \(=\) | \(212089\) | \(=\) | \( 131 \cdot 1619 \) |
\( I_6 \) | \(=\) | \(1627179821\) | \(=\) | \( 29 \cdot 37 \cdot 59 \cdot 25703 \) |
\( I_{10} \) | \(=\) | \(4665600\) | \(=\) | \( 2^{8} \cdot 3^{6} \cdot 5^{2} \) |
\( J_2 \) | \(=\) | \(5861\) | \(=\) | \( 5861 \) |
\( J_4 \) | \(=\) | \(1422468\) | \(=\) | \( 2^{2} \cdot 3^{3} \cdot 13171 \) |
\( J_6 \) | \(=\) | \(457836300\) | \(=\) | \( 2^{2} \cdot 3^{5} \cdot 5^{2} \cdot 83 \cdot 227 \) |
\( J_8 \) | \(=\) | \(164990835819\) | \(=\) | \( 3^{5} \cdot 19 \cdot 71 \cdot 503317 \) |
\( J_{10} \) | \(=\) | \(36450\) | \(=\) | \( 2 \cdot 3^{6} \cdot 5^{2} \) |
\( g_1 \) | \(=\) | \(6916057684302385301/36450\) | ||
\( g_2 \) | \(=\) | \(5303516319500302/675\) | ||
\( g_3 \) | \(=\) | \(1294426477922/3\) |
Automorphism group
\(\mathrm{Aut}(X)\) | \(\simeq\) | $C_2^2$ | magma: AutomorphismGroup(C); IdentifyGroup($1);
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\(\mathrm{Aut}(X_{\overline{\Q}})\) | \(\simeq\) | $C_2^2$ | magma: AutomorphismGroup(ChangeRing(C,AlgebraicClosure(Rationals()))); IdentifyGroup($1);
|
Rational points
Number of rational Weierstrass points: \(0\)
This curve is locally solvable everywhere.
Mordell-Weil group of the Jacobian
Group structure: \(\Z/{2}\Z \oplus \Z/{12}\Z\)
Generator | $D_0$ | Height | Order | |||||
---|---|---|---|---|---|---|---|---|
\(D_0 - (1 : -1 : 0) - (1 : 0 : 0)\) | \(x^2 - xz - z^2\) | \(=\) | \(0,\) | \(y\) | \(=\) | \(-xz^2 - z^3\) | \(0\) | \(2\) |
\(D_0 - (1 : -1 : 0) - (1 : 0 : 0)\) | \(2x^2 - 2xz - 3z^2\) | \(=\) | \(0,\) | \(2y\) | \(=\) | \(-5xz^2 + 2z^3\) | \(0\) | \(12\) |
Generator | $D_0$ | Height | Order | |||||
---|---|---|---|---|---|---|---|---|
\(D_0 - (1 : -1 : 0) - (1 : 0 : 0)\) | \(x^2 - xz - z^2\) | \(=\) | \(0,\) | \(y\) | \(=\) | \(-xz^2 - z^3\) | \(0\) | \(2\) |
\(D_0 - (1 : -1 : 0) - (1 : 0 : 0)\) | \(2x^2 - 2xz - 3z^2\) | \(=\) | \(0,\) | \(2y\) | \(=\) | \(-5xz^2 + 2z^3\) | \(0\) | \(12\) |
Generator | $D_0$ | Height | Order | |||||
---|---|---|---|---|---|---|---|---|
\(D_0 - (1 : -1 : 0) - (1 : 1 : 0)\) | \(x^2 - xz - z^2\) | \(=\) | \(0,\) | \(y\) | \(=\) | \(x^3 - 2xz^2 - z^3\) | \(0\) | \(2\) |
\(D_0 - (1 : -1 : 0) - (1 : 1 : 0)\) | \(2x^2 - 2xz - 3z^2\) | \(=\) | \(0,\) | \(2y\) | \(=\) | \(x^3 - 10xz^2 + 5z^3\) | \(0\) | \(12\) |
2-torsion field: \(\Q(\sqrt{2}, \sqrt{5})\)
BSD invariants
Hasse-Weil conjecture: | verified |
Analytic rank: | \(0\) |
Mordell-Weil rank: | \(0\) |
2-Selmer rank: | \(2\) |
Regulator: | \( 1 \) |
Real period: | \( 18.77899 \) |
Tamagawa product: | \( 6 \) |
Torsion order: | \( 24 \) |
Leading coefficient: | \( 0.195614 \) |
Analytic order of Ш: | \( 1 \) (rounded) |
Order of Ш: | square |
Local invariants
Prime | ord(\(N\)) | ord(\(\Delta\)) | Tamagawa | L-factor | Cluster picture |
---|---|---|---|---|---|
\(2\) | \(1\) | \(1\) | \(1\) | \(( 1 + T )( 1 + T + 2 T^{2} )\) | |
\(3\) | \(2\) | \(6\) | \(6\) | \(( 1 - T )( 1 + T )\) | |
\(5\) | \(2\) | \(2\) | \(1\) | \(( 1 - T )( 1 + T )\) |
Galois representations
For primes $\ell \ge 5$ the Galois representation data has not been computed for this curve since it is not generic.
For primes $\ell \le 3$, the image of the mod-$\ell$ Galois representation is listed in the table below, whenever it is not all of $\GSp(4,\F_\ell)$.
Prime \(\ell\) | mod-\(\ell\) image | Is torsion prime? |
---|---|---|
\(2\) | 2.180.7 | yes |
\(3\) | 3.720.4 | yes |
Sato-Tate group
\(\mathrm{ST}\) | \(\simeq\) | $\mathrm{SU}(2)\times\mathrm{SU}(2)$ |
\(\mathrm{ST}^0\) | \(\simeq\) | \(\mathrm{SU}(2)\times\mathrm{SU}(2)\) |
Decomposition of the Jacobian
Splits over \(\Q\)
Decomposes up to isogeny as the product of the non-isogenous elliptic curve isogeny classes:
Elliptic curve isogeny class 15.a
Elliptic curve isogeny class 30.a
Endomorphisms of the Jacobian
Of \(\GL_2\)-type over \(\Q\)
Endomorphism ring over \(\Q\):
\(\End (J_{})\) | \(\simeq\) | an order of index \(2\) in \(\Z \times \Z\) |
\(\End (J_{}) \otimes \Q \) | \(\simeq\) | \(\Q\) \(\times\) \(\Q\) |
\(\End (J_{}) \otimes \R\) | \(\simeq\) | \(\R \times \R\) |
All \(\overline{\Q}\)-endomorphisms of the Jacobian are defined over \(\Q\).