# Properties

 Label 162.c Number of curves 4 Conductor 162 CM no Rank 0 Graph # Related objects

Show commands for: SageMath
sage: E = EllipticCurve("162.c1")

sage: E.isogeny_class()

## Elliptic curves in class 162.c

sage: E.isogeny_class().curves

LMFDB label Cremona label Weierstrass coefficients Torsion structure Modular degree Optimality
162.c1 162b4 [1, -1, 1, -9695, -364985] [] 126
162.c2 162b3 [1, -1, 1, -95, -697]  42
162.c3 162b1 [1, -1, 1, -5, 5]  6 $$\Gamma_0(N)$$-optimal
162.c4 162b2 [1, -1, 1, 25, 1] [] 18

## Rank

sage: E.rank()

The elliptic curves in class 162.c have rank $$0$$.

## Modular form162.2.a.c

sage: E.q_eigenform(10)

$$q + q^{2} + q^{4} + 2q^{7} + q^{8} - 3q^{11} + 2q^{13} + 2q^{14} + q^{16} - 3q^{17} - q^{19} + O(q^{20})$$

## 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 LMFDB numbering.

$$\left(\begin{array}{rrrr} 1 & 3 & 21 & 7 \\ 3 & 1 & 7 & 21 \\ 21 & 7 & 1 & 3 \\ 7 & 21 & 3 & 1 \end{array}\right)$$

## Isogeny graph

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

The vertices are labelled with LMFDB labels. 