# Properties

 Label 20622k Number of curves 2 Conductor 20622 CM no Rank 1 Graph # Related objects

Show commands for: SageMath
sage: E = EllipticCurve("20622.j1")

sage: E.isogeny_class()

## Elliptic curves in class 20622k

sage: E.isogeny_class().curves

LMFDB label Cremona label Weierstrass coefficients Torsion structure Modular degree Optimality
20622.j2 20622k1 [1, 0, 0, -32311, 6205097]  142688 $$\Gamma_0(N)$$-optimal
20622.j1 20622k2 [1, 0, 0, -5455771, -5039899603] [] 998816

## Rank

sage: E.rank()

The elliptic curves in class 20622k have rank $$1$$.

## Modular form 20622.2.a.j

sage: E.q_eigenform(10)

$$q + q^{2} + q^{3} + q^{4} - q^{5} + q^{6} + q^{7} + q^{8} + q^{9} - q^{10} - 2q^{11} + q^{12} + q^{14} - q^{15} + q^{16} - 3q^{17} + q^{18} - q^{19} + O(q^{20})$$

## 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 Cremona numbering.

$$\left(\begin{array}{rr} 1 & 7 \\ 7 & 1 \end{array}\right)$$

## Isogeny graph

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

The vertices are labelled with Cremona labels. 