Properties

 Label 441.b Number of curves 2 Conductor 441 CM no Rank 0 Graph

Related objects

Show commands for: SageMath
sage: E = EllipticCurve("441.b1")

sage: E.isogeny_class()

Elliptic curves in class 441.b

sage: E.isogeny_class().curves

LMFDB label Cremona label Weierstrass coefficients Torsion structure Modular degree Optimality
441.b1 441e2 [0, 0, 1, -402339, 98307144] [] 4368
441.b2 441e1 [0, 0, 1, -1029, -13806] [] 336 $$\Gamma_0(N)$$-optimal

Rank

sage: E.rank()

The elliptic curves in class 441.b have rank $$0$$.

Modular form441.2.a.b

sage: E.q_eigenform(10)

$$q - 2q^{2} + 2q^{4} + 2q^{5} - 4q^{10} + 2q^{11} + q^{13} - 4q^{16} + q^{19} + O(q^{20})$$

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.

$$\left(\begin{array}{rr} 1 & 13 \\ 13 & 1 \end{array}\right)$$

Isogeny graph

sage: E.isogeny_graph().plot(edge_labels=True)

The vertices are labelled with LMFDB labels.