Elliptic curve isogeny class 86.2-a over number field \(\Q(\sqrt{-7}) \)

• Base field: \(\Q(\sqrt{-7}) \)
• Label: 2.0.7.1-86.2-a
• Conductor: 86.2
• Rank: \( 0 \)

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

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

Elliptic curves in class 86.2-a over \(\Q(\sqrt{-7}) \)

Isogeny class 86.2-a contains 4 curves linked by isogenies of degrees dividing 4.

Curve label	Weierstrass Coefficients
86.2-a1	\( \bigl[1\) , \( -a - 1\) , \( 1\) , \( a + 1\) , \( -1\bigr] \)
86.2-a2	\( \bigl[1\) , \( a + 1\) , \( 1\) , \( a - 1\) , \( -1\bigr] \)
86.2-a3	\( \bigl[1\) , \( a + 1\) , \( 1\) , \( 6 a - 1\) , \( 2 a - 9\bigr] \)
86.2-a4	\( \bigl[1\) , \( a - 1\) , \( 1\) , \( 2 a - 3\) , \( -2 a - 1\bigr] \)

Rank

Rank: \( 0 \)

Isogeny matrix

\(\left(\begin{array}{rrrr} 1 & 2 & 4 & 4 \\ 2 & 1 & 2 & 2 \\ 4 & 2 & 1 & 4 \\ 4 & 2 & 4 & 1 \end{array}\right)\)

Isogeny graph