Properties

Base field \(\Q(\zeta_{15})^+\)
Label 4.4.1125.1-25.1-a
Conductor 25.1
Rank \( 0 \)

Related objects

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Base field \(\Q(\zeta_{15})^+\)

Generator \(a\), with minimal polynomial \( x^{4} - x^{3} - 4 x^{2} + 4 x + 1 \); class number \(1\).

Elliptic curves in class 25.1-a over \(\Q(\zeta_{15})^+\)

Isogeny class 25.1-a contains 8 curves linked by isogenies of degrees dividing 30.

Curve label Weierstrass Coefficients
25.1-a1 \( \bigl[a^{2} + a - 2\) , \( -a^{3} - a^{2} + 4 a + 2\) , \( a^{3} - 2 a + 1\) , \( -5 a^{3} - 4 a^{2} + 13 a + 6\) , \( -7 a^{3} - 6 a^{2} + 19 a + 4\bigr] \)
25.1-a2 \( \bigl[a^{2} + a - 2\) , \( -a^{3} - a^{2} + 4 a + 2\) , \( a^{3} - 2 a + 1\) , \( -45 a^{3} - 39 a^{2} + 113 a + 26\) , \( -258 a^{3} - 214 a^{2} + 641 a + 138\bigr] \)
25.1-a3 \( \bigl[a^{2} - 1\) , \( a - 1\) , \( a^{3} + a^{2} - 2 a - 1\) , \( -716912 a^{3} - 592951 a^{2} + 1784272 a + 392379\) , \( 454902270 a^{3} + 376245535 a^{2} - 1132174281 a - 248976264\bigr] \)
25.1-a4 \( \bigl[a^{2} - 1\) , \( a - 1\) , \( a^{3} + a^{2} - 2 a - 1\) , \( -11484892 a^{3} - 9499051 a^{2} + 28583937 a + 6285889\) , \( 29062760688 a^{3} + 24037545339 a^{2} - 72332262037 a - 15906576101\bigr] \)
25.1-a5 \( \bigl[a^{3} - 2 a\) , \( -a^{3} + a^{2} + 3 a - 3\) , \( a + 1\) , \( 5 a^{3} + 4 a^{2} - 15 a + 1\) , \( 14 a^{3} + 13 a^{2} - 36 a - 10\bigr] \)
25.1-a6 \( \bigl[a^{3} - 2 a\) , \( -a^{3} + a^{2} + 3 a - 3\) , \( a + 1\) , \( -35 a^{3} - 31 a^{2} + 85 a + 21\) , \( 110 a^{3} + 91 a^{2} - 273 a - 59\bigr] \)
25.1-a7 \( \bigl[a^{3} - 2 a + 1\) , \( a^{3} + a^{2} - 4 a - 3\) , \( a^{2} + a - 1\) , \( 29593 a^{3} + 24472 a^{2} - 73662 a - 16197\) , \( -4979614 a^{3} - 4118597 a^{2} + 12393403 a + 2725431\bigr] \)
25.1-a8 \( \bigl[a^{3} - 2 a + 1\) , \( a^{3} + a^{2} - 4 a - 3\) , \( a^{2} + a - 1\) , \( -199462 a^{3} - 165053 a^{2} + 496253 a + 109138\) , \( -50977357 a^{3} - 42163431 a^{2} + 126872829 a + 27900618\bigr] \)

Rank

Rank: \( 0 \)

Isogeny matrix

\(\left(\begin{array}{rrrrrrrr} 1 & 2 & 15 & 30 & 5 & 10 & 3 & 6 \\ 2 & 1 & 30 & 15 & 10 & 5 & 6 & 3 \\ 15 & 30 & 1 & 2 & 3 & 6 & 5 & 10 \\ 30 & 15 & 2 & 1 & 6 & 3 & 10 & 5 \\ 5 & 10 & 3 & 6 & 1 & 2 & 15 & 30 \\ 10 & 5 & 6 & 3 & 2 & 1 & 30 & 15 \\ 3 & 6 & 5 & 10 & 15 & 30 & 1 & 2 \\ 6 & 3 & 10 & 5 & 30 & 15 & 2 & 1 \end{array}\right)\)

Isogeny graph