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SageMath
E = EllipticCurve("bt1")
E.isogeny_class()
Elliptic curves in class 86394.bt
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
86394.bt1 | 86394cj4 | \([1, 1, 1, -8294129, -9197451493]\) | \(35618855581745079337/188166132\) | \(333347780972052\) | \([2]\) | \(2211840\) | \(2.4032\) | |
86394.bt2 | 86394cj2 | \([1, 1, 1, -518669, -143705869]\) | \(8710408612492777/19986042384\) | \(35406493231841424\) | \([2, 2]\) | \(1105920\) | \(2.0566\) | |
86394.bt3 | 86394cj3 | \([1, 1, 1, -332329, -248130805]\) | \(-2291249615386537/13671036998388\) | \(-24219075975901243668\) | \([2]\) | \(2211840\) | \(2.4032\) | |
86394.bt4 | 86394cj1 | \([1, 1, 1, -44349, -461229]\) | \(5445273626857/3103398144\) | \(5497859119382784\) | \([4]\) | \(552960\) | \(1.7101\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 86394.bt have rank \(1\).
Complex multiplication
The elliptic curves in class 86394.bt do not have complex multiplication.Modular form 86394.2.a.bt
sage: E.q_eigenform(10)
Isogeny matrix
sage: E.isogeny_class().matrix()
The \(i,j\) entry is the smallest degree of a cyclic isogeny between the \(i\)-th and \(j\)-th curve in the isogeny class, in the LMFDB numbering.
\(\left(\begin{array}{rrrr} 1 & 2 & 4 & 4 \\ 2 & 1 & 2 & 2 \\ 4 & 2 & 1 & 4 \\ 4 & 2 & 4 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.