Base field \(\Q(\sqrt{5}, \sqrt{7})\)
Generator \(a\), with minimal polynomial \( x^{4} - 2 x^{3} - 15 x^{2} + 16 x + 29 \); class number \(1\).
sage: R.<x> = PolynomialRing(QQ); K.<a> = NumberField(R([29, 16, -15, -2, 1]))
gp: K = nfinit(Polrev([29, 16, -15, -2, 1]));
magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(R![29, 16, -15, -2, 1]);
Weierstrass equation
sage: E = EllipticCurve([K([-44/23,63/23,6/23,-4/23]),K([126/23,-10/23,-13/23,1/23]),K([1/23,43/23,3/23,-2/23]),K([961/23,245/23,-61/23,-13/23]),K([-1369/23,-2333/23,-59/23,162/23])])
gp: E = ellinit([Polrev([-44/23,63/23,6/23,-4/23]),Polrev([126/23,-10/23,-13/23,1/23]),Polrev([1/23,43/23,3/23,-2/23]),Polrev([961/23,245/23,-61/23,-13/23]),Polrev([-1369/23,-2333/23,-59/23,162/23])], K);
magma: E := EllipticCurve([K![-44/23,63/23,6/23,-4/23],K![126/23,-10/23,-13/23,1/23],K![1/23,43/23,3/23,-2/23],K![961/23,245/23,-61/23,-13/23],K![-1369/23,-2333/23,-59/23,162/23]]);
This is a global minimal model.
sage: E.is_global_minimal_model()
Invariants
| Conductor: | \((-4/23a^3+6/23a^2+63/23a-44/23)\) | = | \((-4/23a^3+6/23a^2+63/23a-44/23)\) |
sage: E.conductor()
gp: ellglobalred(E)[1]
magma: Conductor(E);
| |||
| Conductor norm: | \( 29 \) | = | \(29\) |
sage: E.conductor().norm()
gp: idealnorm(ellglobalred(E)[1])
magma: Norm(Conductor(E));
| |||
| Discriminant: | \((-4/23a^3+6/23a^2+63/23a-44/23)\) | = | \((-4/23a^3+6/23a^2+63/23a-44/23)\) |
sage: E.discriminant()
gp: E.disc
magma: Discriminant(E);
| |||
| Discriminant norm: | \( 29 \) | = | \(29\) |
sage: E.discriminant().norm()
gp: norm(E.disc)
magma: Norm(Discriminant(E));
| |||
| j-invariant: | \( -\frac{2260418171}{667} a^{3} - \frac{5116700339}{667} a^{2} + \frac{12088543944}{667} a + \frac{530057237}{23} \) | ||
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: | \(1\) |
| Generator | $\left(-\frac{6}{23} a^{3} + \frac{9}{23} a^{2} + \frac{83}{23} a + \frac{3}{23} : \frac{20}{23} a^{3} + \frac{16}{23} a^{2} - \frac{338}{23} a - \frac{470}{23} : 1\right)$ |
| Height | \(0.18325482942207945916954487270676713506\) |
| Torsion structure: | trivial |
| sage: T = E.torsion_subgroup(); T.invariants()
gp: T = elltors(E); T[2]
magma: T,piT := TorsionSubgroup(E); Invariants(T);
| |
BSD invariants
| Analytic rank: | \( 1 \) | ||
|
sage: E.rank()
magma: Rank(E);
|
|||
| Mordell-Weil rank: | \(1\) | ||
| Regulator: | \( 0.18325482942207945916954487270676713506 \) | ||
| Period: | \( 501.70341450493858853440672853273254364 \) | ||
| Tamagawa product: | \( 1 \) | ||
| Torsion order: | \(1\) | ||
| Leading coefficient: | \( 2.62684496130221 \) | ||
| Analytic order of Ш: | \( 1 \) (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\((j)_{-}\) |
|---|---|---|---|---|---|---|---|---|
| \((-4/23a^3+6/23a^2+63/23a-44/23)\) | \(29\) | \(1\) | \(I_{1}\) | Split multiplicative | \(-1\) | \(1\) | \(1\) | \(1\) |
Galois Representations
The mod \( p \) Galois Representation has maximal image for all primes \( p < 1000 \) except those listed.
| prime | Image of Galois Representation |
|---|---|
| \(3\) | 3B |
Isogenies and isogeny class
This curve has non-trivial cyclic isogenies of degree \(d\) for \(d=\)
3.
Its isogeny class
29.3-a
consists of curves linked by isogenies of
degree 3.
Base change
This elliptic curve is not a \(\Q\)-curve.
It is not the base change of an elliptic curve defined over any subfield.