Properties

 Label 203.a Number of curves 2 Conductor 203 CM no Rank 0 Graph Related objects

Show commands for: SageMath
sage: E = EllipticCurve("203.a1")
sage: E.isogeny_class()

Elliptic curves in class 203.a

sage: E.isogeny_class().curves
LMFDB label Cremona label Weierstrass coefficients Torsion order Modular degree Optimality
203.a1 203a2 [0, -1, 1, -2150, -37668] 1 240
203.a2 203a1 [0, -1, 1, 20, -8] 5 48 $$\Gamma_0(N)$$-optimal

Rank

sage: E.rank()

The elliptic curves in class 203.a have rank $$0$$.

Modular form203.2.a.a

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

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. 