Show commands:
SageMath
E = EllipticCurve("a1")
E.isogeny_class()
Elliptic curves in class 116281a
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality | CM discriminant |
---|---|---|---|---|---|---|---|---|---|
116281.b2 | 116281a1 | \([0, 1, 1, -7047, -235988]\) | \(-32768\) | \(-1181267399411\) | \([]\) | \(119880\) | \(1.0939\) | \(\Gamma_0(N)\)-optimal | \(-11\) |
116281.b1 | 116281a2 | \([0, 1, 1, -852727, 310688835]\) | \(-32768\) | \(-2092687255367950571\) | \([]\) | \(1318680\) | \(2.2929\) | \(-11\) |
Rank
sage: E.rank()
The elliptic curves in class 116281a have rank \(0\).
Complex multiplication
Each elliptic curve in class 116281a has complex multiplication by an order in the imaginary quadratic field \(\Q(\sqrt{-11}) \).Modular form 116281.2.a.a
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 Cremona numbering.
\(\left(\begin{array}{rr} 1 & 11 \\ 11 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.