Elliptic curve isogeny class 896.4-a over number field \(\Q(\sqrt{-7}) \)

• Base field: \(\Q(\sqrt{-7}) \)
• Label: 2.0.7.1-896.4-a
• Conductor: 896.4
• Rank: \( 0 \)

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

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

Elliptic curves in class 896.4-a over \(\Q(\sqrt{-7}) \)

Isogeny class 896.4-a contains 6 curves linked by isogenies of degrees dividing 8.

Curve label	Weierstrass Coefficients
896.4-a1	\( \bigl[0\) , \( a\) , \( 0\) , \( -213 a + 255\) , \( -80 a + 2380\bigr] \)
896.4-a2	\( \bigl[0\) , \( -a\) , \( 0\) , \( 40 a - 15\) , \( -74 a - 60\bigr] \)
896.4-a3	\( \bigl[0\) , \( a\) , \( 0\) , \( -13 a + 15\) , \( 44\bigr] \)
896.4-a4	\( \bigl[0\) , \( a - 1\) , \( 0\) , \( 5 a - 6\) , \( -16 a + 4\bigr] \)
896.4-a5	\( \bigl[0\) , \( -a + 1\) , \( 0\) , \( 21 a + 26\) , \( 8 a - 128\bigr] \)
896.4-a6	\( \bigl[0\) , \( -a + 1\) , \( 0\) , \( a - 14\) , \( 12 a - 24\bigr] \)

Rank

Rank: \( 0 \)

Isogeny matrix

\(\left(\begin{array}{rrrrrr} 1 & 8 & 2 & 4 & 8 & 4 \\ 8 & 1 & 4 & 8 & 4 & 2 \\ 2 & 4 & 1 & 2 & 4 & 2 \\ 4 & 8 & 2 & 1 & 8 & 4 \\ 8 & 4 & 4 & 8 & 1 & 2 \\ 4 & 2 & 2 & 4 & 2 & 1 \end{array}\right)\)

Isogeny graph