# Properties

 Label 890.g Number of curves 2 Conductor 890 CM no Rank 1 Graph # Learn more about

Show commands for: SageMath
sage: E = EllipticCurve("890.g1")
sage: E.isogeny_class()

## Elliptic curves in class 890.g

sage: E.isogeny_class().curves
LMFDB label Cremona label Weierstrass coefficients Torsion order Modular degree Optimality
890.g1 890g2 [1, 1, 1, -2040, -38093] 1 1000
890.g2 890g1 [1, 1, 1, 10, 147] 5 200 $$\Gamma_0(N)$$-optimal

## Rank

sage: E.rank()

The elliptic curves in class 890.g have rank $$1$$.

## Modular form890.2.a.g

sage: E.q_eigenform(10)
$$q + q^{2} - q^{3} + q^{4} + q^{5} - q^{6} - 2q^{7} + q^{8} - 2q^{9} + q^{10} - 3q^{11} - q^{12} - 6q^{13} - 2q^{14} - q^{15} + q^{16} - 2q^{17} - 2q^{18} + O(q^{20})$$

## 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.

$$\left(\begin{array}{rr} 1 & 5 \\ 5 & 1 \end{array}\right)$$

## Isogeny graph

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

The vertices are labelled with LMFDB labels. 