Elliptic curve isogeny class 218.3-a over number field \(\Q(\sqrt{-7}) \)

• Base field: \(\Q(\sqrt{-7}) \)
• Label: 2.0.7.1-218.3-a
• Conductor: 218.3
• Rank: \( 0 \)

Base field \(\Q(\sqrt{-7}) \)

Generator \(a\), with minimal polynomial \( x^{2} - x + 2 \); class number \(1\).

Elliptic curves in class 218.3-a over \(\Q(\sqrt{-7}) \)

Isogeny class 218.3-a contains 3 curves linked by isogenies of degrees dividing 9.

Curve label	Weierstrass Coefficients
218.3-a1	\( \bigl[a\) , \( 0\) , \( 1\) , \( -180 a - 170\) , \( -1720 a - 210\bigr] \)
218.3-a2	\( \bigl[a\) , \( 0\) , \( 1\) , \( 0\) , \( 0\bigr] \)
218.3-a3	\( \bigl[a\) , \( 0\) , \( 1\) , \( -5 a\) , \( a - 5\bigr] \)

Rank

Rank: \( 0 \)

Isogeny matrix

\(\left(\begin{array}{rrr} 1 & 9 & 3 \\ 9 & 1 & 3 \\ 3 & 3 & 1 \end{array}\right)\)

Isogeny graph