Base field \(\Q(\sqrt{10}) \)
Generator \(a\), with minimal polynomial \( x^{2} - 10 \); class number \(2\).
magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(R![-10, 0, 1]);
sage: x = polygen(QQ); K.<a> = NumberField(x^2 - 10)
gp: K = nfinit(a^2 - 10);
Weierstrass equation
magma: E := ChangeRing(EllipticCurve([1, 0, 1, -5334, -150368]),K);
sage: E = EllipticCurve(K, [1, 0, 1, -5334, -150368])
gp: E = ellinit([1, 0, 1, -5334, -150368],K)
This is a global minimal model.
sage: E.is_global_minimal_model()
Invariants
| \(\mathfrak{N} \) | = | \((-3 a)\) | = | \( \left(2, a\right) \cdot \left(3, a + 1\right) \cdot \left(3, a + 2\right) \cdot \left(5, a\right) \) |
| magma: Conductor(E);
sage: E.conductor()
| ||||
| \(N(\mathfrak{N}) \) | = | \( 90 \) | = | \( 2 \cdot 3^{2} \cdot 5 \) |
| magma: Norm(Conductor(E));
sage: E.conductor().norm()
| ||||
| \(\mathfrak{D}\) | = | \((81000)\) | = | \( \left(2, a\right)^{6} \cdot \left(3, a + 1\right)^{4} \cdot \left(3, a + 2\right)^{4} \cdot \left(5, a\right)^{6} \) |
| magma: Discriminant(E);
sage: E.discriminant()
gp: E.disc
| ||||
| \(N(\mathfrak{D})\) | = | \( 6561000000 \) | = | \( 2^{6} \cdot 3^{8} \cdot 5^{6} \) |
| magma: Norm(Discriminant(E));
sage: E.discriminant().norm()
gp: norm(E.disc)
| ||||
| \(j\) | = | \( \frac{16778985534208729}{81000} \) | ||
| magma: jInvariant(E);
sage: E.j_invariant()
gp: E.j
| ||||
| \( \text{End} (E) \) | = | \(\Z\) | (no Complex Multiplication ) | |
| magma: HasComplexMultiplication(E);
sage: E.has_cm(), E.cm_discriminant()
| ||||
| \( \text{ST} (E) \) | = | $\mathrm{SU}(2)$ | ||
Mordell-Weil group
Rank not available.magma: Rank(E);
sage: E.rank()
Regulator: not available
magma: gens := [P:P in Generators(E)|Order(P) eq 0]; gens;
sage: gens = E.gens(); gens
magma: Regulator(gens);
sage: E.regulator_of_points(gens)
Torsion subgroup
| Structure: | \(\Z/2\Z\times\Z/2\Z\) |
|---|---|
| magma: T,piT := TorsionSubgroup(E); Invariants(T);
sage: T = E.torsion_subgroup(); T.invariants()
gp: T = elltors(E); T[2]
| |
| Generators: | $\left(-\frac{169}{4} : \frac{165}{8} : 1\right)$,$\left(-20 a + 21 : 10 a - 11 : 1\right)$ |
| magma: [piT(P) : P in Generators(T)];
sage: T.gens()
gp: T[3]
| |
Local data at primes of bad reduction
magma: LocalInformation(E);
sage: E.local_data()
| prime | Norm | Tamagawa number | Kodaira symbol | Reduction type | Root number | ord(\(\mathfrak{N}\)) | ord(\(\mathfrak{D}\)) | ord\((j)_{-}\) |
|---|---|---|---|---|---|---|---|---|
| \( \left(2, a\right) \) | \(2\) | \(2\) | \(I_{6}\) | Non-split multiplicative | \(1\) | \(1\) | \(6\) | \(6\) |
| \( \left(3, a + 1\right) \) | \(3\) | \(4\) | \(I_{4}\) | Split multiplicative | \(-1\) | \(1\) | \(4\) | \(4\) |
| \( \left(3, a + 2\right) \) | \(3\) | \(4\) | \(I_{4}\) | Split multiplicative | \(-1\) | \(1\) | \(4\) | \(4\) |
| \( \left(5, a\right) \) | \(5\) | \(2\) | \(I_{6}\) | Non-split multiplicative | \(1\) | \(1\) | \(6\) | \(6\) |
Galois Representations
The mod \( p \) Galois Representation has maximal image for all primes \( p \) except those listed.
| prime | Image of Galois Representation |
|---|---|
| \(2\) | 2Cs |
| \(3\) | 3B.1.2 |
Isogenies and isogeny class
This curve has non-trivial cyclic isogenies of degree \(d\) for \(d=\)
2, 3, 4, 6 and 12.
Its isogeny class
90.1-f
consists of curves linked by isogenies of
degrees dividing 24.