# Properties

 Label 75.a Number of curves 2 Conductor 75 CM no Rank 0 Graph # Learn more about

Show commands for: SageMath
sage: E = EllipticCurve("75.a1")
sage: E.isogeny_class()

## Elliptic curves in class 75.a

sage: E.isogeny_class().curves
LMFDB label Cremona label Weierstrass coefficients Torsion order Modular degree Optimality
75.a1 75c2 [0, 1, 1, -208, -1256] 1 30
75.a2 75c1 [0, 1, 1, 2, 4] 5 6 $$\Gamma_0(N)$$-optimal

## Rank

sage: E.rank()

The elliptic curves in class 75.a have rank $$0$$.

## Modular form75.2.a.a

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

## 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.

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

## Isogeny graph

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

The vertices are labelled with LMFDB labels. 