Isogeny class 91.2-a contains
8 curves linked by isogenies of
degrees dividing 16.
| Curve label |
Weierstrass Coefficients |
| 91.2-a1
| \( \bigl[a\) , \( -a - 1\) , \( 0\) , \( 1620 a^{2} - 590 a - 4164\) , \( 41147 a^{2} - 19378 a - 98898\bigr] \)
|
| 91.2-a2
| \( \bigl[a\) , \( -a - 1\) , \( 0\) , \( -2800 a^{2} + 6210 a - 2454\) , \( -131435 a^{2} + 294782 a - 106770\bigr] \)
|
| 91.2-a3
| \( \bigl[a\) , \( -a - 1\) , \( 0\) , \( -70 a^{2} + 330 a - 389\) , \( -1452 a^{2} + 4324 a - 3100\bigr] \)
|
| 91.2-a4
| \( \bigl[a\) , \( -a - 1\) , \( 0\) , \( 5 a^{2} - 20 a - 64\) , \( -20 a^{2} + 109 a + 227\bigr] \)
|
| 91.2-a5
| \( \bigl[a\) , \( -a - 1\) , \( 0\) , \( -5 a^{2} + 20 a - 24\) , \( -26 a^{2} + 75 a - 43\bigr] \)
|
| 91.2-a6
| \( \bigl[a\) , \( -a - 1\) , \( 0\) , \( -4\) , \( -a^{2} + 4 a + 4\bigr] \)
|
| 91.2-a7
| \( \bigl[a\) , \( -a - 1\) , \( 0\) , \( 1\) , \( 0\bigr] \)
|
| 91.2-a8
| \( \bigl[a\) , \( -a - 1\) , \( 0\) , \( -20 a^{2} + 30 a + 21\) , \( 20 a^{2} + 70 a - 174\bigr] \)
|
Rank: \( 0 \)
\(\left(\begin{array}{rrrrrrrr}
1 & 4 & 2 & 16 & 4 & 8 & 16 & 8 \\
4 & 1 & 2 & 16 & 4 & 8 & 16 & 8 \\
2 & 2 & 1 & 8 & 2 & 4 & 8 & 4 \\
16 & 16 & 8 & 1 & 4 & 2 & 4 & 8 \\
4 & 4 & 2 & 4 & 1 & 2 & 4 & 2 \\
8 & 8 & 4 & 2 & 2 & 1 & 2 & 4 \\
16 & 16 & 8 & 4 & 4 & 2 & 1 & 8 \\
8 & 8 & 4 & 8 & 2 & 4 & 8 & 1
\end{array}\right)\)
