# Properties

 Label 7623e Number of curves 2 Conductor 7623 CM no Rank 1 Graph # Related objects

Show commands for: SageMath
sage: E = EllipticCurve("7623.k1")

sage: E.isogeny_class()

## Elliptic curves in class 7623e

sage: E.isogeny_class().curves

LMFDB label Cremona label Weierstrass coefficients Torsion structure Modular degree Optimality
7623.k2 7623e1 [0, 0, 1, -66, 63] [] 1536 $$\Gamma_0(N)$$-optimal
7623.k1 7623e2 [0, 0, 1, -3036, -64386] [] 4608

## Rank

sage: E.rank()

The elliptic curves in class 7623e have rank $$1$$.

## Modular form7623.2.a.k

sage: E.q_eigenform(10)

$$q - 2q^{4} + 3q^{5} - q^{7} + 4q^{13} + 4q^{16} - 3q^{17} - 2q^{19} + O(q^{20})$$

## 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.

$$\left(\begin{array}{rr} 1 & 3 \\ 3 & 1 \end{array}\right)$$

## Isogeny graph

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

The vertices are labelled with Cremona labels. 