Properties

Base field \(\Q(\sqrt{2}) \)
Label 2.2.8.1-256.1-a
Conductor 256.1
Rank \( 0 \)

Related objects

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Base field \(\Q(\sqrt{2}) \)

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

Elliptic curves in class 256.1-a over \(\Q(\sqrt{2}) \)

Isogeny class 256.1-a contains 8 curves linked by isogenies of degrees dividing 16.

Curve label Weierstrass Coefficients
256.1-a1 \( \bigl[0\) , \( 0\) , \( 0\) , \( -2 a - 33\) , \( -154 a - 154\bigr] \)
256.1-a2 \( \bigl[0\) , \( 0\) , \( 0\) , \( -2 a - 33\) , \( 154 a + 154\bigr] \)
256.1-a3 \( \bigl[0\) , \( 0\) , \( 0\) , \( 2 a + 3\) , \( 0\bigr] \)
256.1-a4 \( \bigl[0\) , \( 0\) , \( 0\) , \( -2 a - 3\) , \( 0\bigr] \)
256.1-a5 \( \bigl[0\) , \( 0\) , \( 0\) , \( 22 a - 33\) , \( 70 a - 98\bigr] \)
256.1-a6 \( \bigl[0\) , \( 0\) , \( 0\) , \( 22 a - 33\) , \( -70 a + 98\bigr] \)
256.1-a7 \( \bigl[0\) , \( 0\) , \( 0\) , \( 2 a - 33\) , \( 154 a - 154\bigr] \)
256.1-a8 \( \bigl[0\) , \( 0\) , \( 0\) , \( 2 a - 33\) , \( -154 a + 154\bigr] \)

Rank

Rank: \( 0 \)

Isogeny matrix

\(\left(\begin{array}{rrrrrrrr} 1 & 16 & 8 & 4 & 8 & 2 & 16 & 4 \\ 16 & 1 & 8 & 4 & 2 & 8 & 4 & 16 \\ 8 & 8 & 1 & 2 & 4 & 4 & 8 & 8 \\ 4 & 4 & 2 & 1 & 2 & 2 & 4 & 4 \\ 8 & 2 & 4 & 2 & 1 & 4 & 2 & 8 \\ 2 & 8 & 4 & 2 & 4 & 1 & 8 & 2 \\ 16 & 4 & 8 & 4 & 2 & 8 & 1 & 16 \\ 4 & 16 & 8 & 4 & 8 & 2 & 16 & 1 \end{array}\right)\)

Isogeny graph