Base field 3.3.229.1
Generator \(a\), with minimal polynomial \( x^{3} - 4 x - 1 \); class number \(1\).
sage: R.<x> = PolynomialRing(QQ); K.<a> = NumberField(R([-1, -4, 0, 1]))
gp: K = nfinit(Polrev([-1, -4, 0, 1]));
magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(R![-1, -4, 0, 1]);
Weierstrass equation
sage: E = EllipticCurve([K([1,0,0]),K([3,-1,-1]),K([0,1,0]),K([-60,176,-106]),K([-692,2082,-971])])
gp: E = ellinit([Polrev([1,0,0]),Polrev([3,-1,-1]),Polrev([0,1,0]),Polrev([-60,176,-106]),Polrev([-692,2082,-971])], K);
magma: E := EllipticCurve([K![1,0,0],K![3,-1,-1],K![0,1,0],K![-60,176,-106],K![-692,2082,-971]]);
This is a global minimal model.
sage: E.is_global_minimal_model()
Invariants
| Conductor: | \((2)\) | = | \((a+1)\cdot(a^2-a-3)\) |
sage: E.conductor()
gp: ellglobalred(E)[1]
magma: Conductor(E);
| |||
| Conductor norm: | \( 8 \) | = | \(2\cdot4\) |
sage: E.conductor().norm()
gp: idealnorm(ellglobalred(E)[1])
magma: Norm(Conductor(E));
| |||
| Discriminant: | \((837944a^2-1104680a-3955944)\) | = | \((a+1)^{3}\cdot(a^2-a-3)^{30}\) |
sage: E.discriminant()
gp: E.disc
magma: Discriminant(E);
| |||
| Discriminant norm: | \( 9223372036854775808 \) | = | \(2^{3}\cdot4^{30}\) |
sage: E.discriminant().norm()
gp: norm(E.disc)
magma: Norm(Discriminant(E));
| |||
| j-invariant: | \( -\frac{9591905236373162715}{1073741824} a^{2} - \frac{20286002608069784023}{1073741824} a - \frac{2267690473188435537}{536870912} \) | ||
sage: E.j_invariant()
gp: E.j
magma: jInvariant(E);
| |||
| Endomorphism ring: | \(\Z\) | ||
| Geometric endomorphism ring: | \(\Z\) | (no potential complex multiplication) | |
sage: E.has_cm(), E.cm_discriminant()
magma: HasComplexMultiplication(E);
| |||
| Sato-Tate group: | $\mathrm{SU}(2)$ | ||
Mordell-Weil group
| Rank: | \(0\) |
| Torsion structure: | \(\Z/2\Z\) |
| sage: T = E.torsion_subgroup(); T.invariants()
gp: T = elltors(E); T[2]
magma: T,piT := TorsionSubgroup(E); Invariants(T);
| |
| Torsion generator: | $\left(-\frac{15}{4} a^{2} + \frac{33}{4} a + \frac{61}{4} : \frac{15}{8} a^{2} - \frac{37}{8} a - \frac{61}{8} : 1\right)$ |
| sage: T.gens()
gp: T[3]
magma: [piT(P) : P in Generators(T)];
| |
BSD invariants
| Analytic rank: | \( 0 \) | ||
|
sage: E.rank()
magma: Rank(E);
|
|||
| Mordell-Weil rank: | \(0\) | ||
| Regulator: | \( 1 \) | ||
| Period: | \( 0.41139883356959586135220536746904433114 \) | ||
| Tamagawa product: | \( 6 \) = \(3\cdot2\) | ||
| Torsion order: | \(2\) | ||
| Leading coefficient: | \( 1.0194750053561877888775265541138080627 \) | ||
| Analytic order of Ш: | \( 25 \) (rounded) | ||
Local data at primes of bad reduction
sage: E.local_data()
magma: LocalInformation(E);
| prime | Norm | Tamagawa number | Kodaira symbol | Reduction type | Root number | ord(\(\mathfrak{N}\)) | ord(\(\mathfrak{D}\)) | ord\((j)_{-}\) |
|---|---|---|---|---|---|---|---|---|
| \((a+1)\) | \(2\) | \(3\) | \(I_{3}\) | Split multiplicative | \(-1\) | \(1\) | \(3\) | \(3\) |
| \((a^2-a-3)\) | \(4\) | \(2\) | \(I_{30}\) | Non-split multiplicative | \(1\) | \(1\) | \(30\) | \(30\) |
Galois Representations
The mod \( p \) Galois Representation has maximal image for all primes \( p < 1000 \) except those listed.
| prime | Image of Galois Representation |
|---|---|
| \(2\) | 2B |
| \(3\) | 3B |
| \(5\) | 5B.1.2 |
Isogenies and isogeny class
This curve has non-trivial cyclic isogenies of degree \(d\) for \(d=\)
2, 3, 5, 6, 10, 15 and 30.
Its isogeny class
8.1-b
consists of curves linked by isogenies of
degrees dividing 30.
Base change
This elliptic curve is not a \(\Q\)-curve.
It is not the base change of an elliptic curve defined over any subfield.