# Properties

 Label 31200cj Number of curves $2$ Conductor $31200$ CM no Rank $1$ Graph # Related objects

Show commands for: SageMath
sage: E = EllipticCurve("cj1")

sage: E.isogeny_class()

## Elliptic curves in class 31200cj

sage: E.isogeny_class().curves

LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
31200.bg2 31200cj1 $$[0, 1, 0, -4958, -135912]$$ $$107850176/117$$ $$14625000000$$ $$$$ $$35840$$ $$0.86609$$ $$\Gamma_0(N)$$-optimal
31200.bg1 31200cj2 $$[0, 1, 0, -6208, -63412]$$ $$26463592/13689$$ $$13689000000000$$ $$$$ $$71680$$ $$1.2127$$

## Rank

sage: E.rank()

The elliptic curves in class 31200cj have rank $$1$$.

## Complex multiplication

The elliptic curves in class 31200cj do not have complex multiplication.

## Modular form 31200.2.a.cj

sage: E.q_eigenform(10)

$$q + q^{3} - 4q^{7} + q^{9} - 2q^{11} + q^{13} + 2q^{19} + O(q^{20})$$ ## 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.

$$\left(\begin{array}{rr} 1 & 2 \\ 2 & 1 \end{array}\right)$$

## Isogeny graph

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

The vertices are labelled with Cremona labels. 