# Properties

 Label 258f Number of curves 2 Conductor 258 CM no Rank 0 Graph

# Related objects

Show commands for: SageMath
sage: E = EllipticCurve("258.f1")
sage: E.isogeny_class()

## Elliptic curves in class 258f

sage: E.isogeny_class().curves
LMFDB label Cremona label Weierstrass coefficients Torsion order Modular degree Optimality
258.f2 258f1 [1, 0, 0, 159, 1737] 7 168 $$\Gamma_0(N)$$-optimal
258.f1 258f2 [1, 0, 0, -59901, -5648523] 1 1176

## Rank

sage: E.rank()

The elliptic curves in class 258f have rank $$0$$.

## Modular form258.2.a.f

sage: E.q_eigenform(10)
$$q + q^{2} + q^{3} + q^{4} - q^{5} + q^{6} + q^{7} + q^{8} + q^{9} - q^{10} + 5q^{11} + q^{12} - 7q^{13} + q^{14} - q^{15} + q^{16} + 4q^{17} + q^{18} - q^{19} + O(q^{20})$$

## 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.