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SageMath
E = EllipticCurve("i1")
E.isogeny_class()
Elliptic curves in class 7938.i
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
7938.i1 | 7938m3 | \([1, -1, 0, -52782, -4654252]\) | \(-189613868625/128\) | \(-10978063488\) | \([]\) | \(15120\) | \(1.2423\) | |
7938.i2 | 7938m4 | \([1, -1, 0, -41757, -6661243]\) | \(-1159088625/2097152\) | \(-14569031967178752\) | \([]\) | \(45360\) | \(1.7916\) | |
7938.i3 | 7938m2 | \([1, -1, 0, -2067, 38429]\) | \(-140625/8\) | \(-55576446408\) | \([]\) | \(6480\) | \(0.81867\) | |
7938.i4 | 7938m1 | \([1, -1, 0, 138, 62]\) | \(3375/2\) | \(-171532242\) | \([]\) | \(2160\) | \(0.26937\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 7938.i have rank \(1\).
Complex multiplication
The elliptic curves in class 7938.i do not have complex multiplication.Modular form 7938.2.a.i
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.
\(\left(\begin{array}{rrrr} 1 & 3 & 21 & 7 \\ 3 & 1 & 7 & 21 \\ 21 & 7 & 1 & 3 \\ 7 & 21 & 3 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.