Properties

Label 4.4.19600.1-29.1-b2
Base field \(\Q(\sqrt{5}, \sqrt{7})\)
Conductor norm \( 29 \)
CM no
Base change no
Q-curve no
Torsion order \( 1 \)
Rank \( 1 \)

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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

\({y}^2+\left(-\frac{1}{23}a^{3}+\frac{13}{23}a^{2}-\frac{13}{23}a-\frac{103}{23}\right){x}{y}+\left(-\frac{3}{23}a^{3}+\frac{16}{23}a^{2}+\frac{30}{23}a-\frac{125}{23}\right){y}={x}^{3}+\left(\frac{4}{23}a^{3}-\frac{6}{23}a^{2}-\frac{63}{23}a+\frac{21}{23}\right){x}^{2}+\left(\frac{51}{23}a^{3}+\frac{119}{23}a^{2}-\frac{349}{23}a-\frac{382}{23}\right){x}-\frac{157}{23}a^{3}-\frac{305}{23}a^{2}+\frac{926}{23}a+\frac{1079}{23}\)
sage: E = EllipticCurve([K([-103/23,-13/23,13/23,-1/23]),K([21/23,-63/23,-6/23,4/23]),K([-125/23,30/23,16/23,-3/23]),K([-382/23,-349/23,119/23,51/23]),K([1079/23,926/23,-305/23,-157/23])])
 
gp: E = ellinit([Polrev([-103/23,-13/23,13/23,-1/23]),Polrev([21/23,-63/23,-6/23,4/23]),Polrev([-125/23,30/23,16/23,-3/23]),Polrev([-382/23,-349/23,119/23,51/23]),Polrev([1079/23,926/23,-305/23,-157/23])], K);
 
magma: E := EllipticCurve([K![-103/23,-13/23,13/23,-1/23],K![21/23,-63/23,-6/23,4/23],K![-125/23,30/23,16/23,-3/23],K![-382/23,-349/23,119/23,51/23],K![1079/23,926/23,-305/23,-157/23]]);
 

This is a global minimal model.

sage: E.is_global_minimal_model()
 

Invariants

Conductor: \((1/23a^3+10/23a^2-10/23a-58/23)\) = \((1/23a^3+10/23a^2-10/23a-58/23)\)
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: \((-27/23a^3+75/23a^2+224/23a-435/23)\) = \((1/23a^3+10/23a^2-10/23a-58/23)^{3}\)
sage: E.discriminant()
 
gp: E.disc
 
magma: Discriminant(E);
 
Discriminant norm: \( 24389 \) = \(29^{3}\)
sage: E.discriminant().norm()
 
gp: norm(E.disc)
 
magma: Norm(Discriminant(E));
 
j-invariant: \( \frac{12031685}{560947} a^{3} + \frac{20868070}{560947} a^{2} - \frac{74839295}{560947} a - \frac{184229169}{560947} \)
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 $\left(-\frac{2}{23} a^{3} + \frac{3}{23} a^{2} + \frac{43}{23} a + \frac{1}{23} : -\frac{5}{23} a^{3} - \frac{4}{23} a^{2} + \frac{27}{23} a + \frac{37}{23} : 1\right)$
Height \(0.17579277387571287464615004550657019811\)
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: \( 0.17579277387571287464615004550657019811 \)
Period: \( 217.94907400688153885671810394993589335 \)
Tamagawa product: \( 3 \)
Torsion order: \(1\)
Leading coefficient: \( 3.28404619571252 \)
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\((j)_{-}\)
\((1/23a^3+10/23a^2-10/23a-58/23)\) \(29\) \(3\) \(I_{3}\) Split multiplicative \(-1\) \(1\) \(3\) \(3\)

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 29.1-b 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.