Elliptic curve isogeny class 41.4-b over number field \(\Q(\zeta_{21})^+\)

• Base field: \(\Q(\zeta_{21})^+\)
• Label: 6.6.453789.1-41.4-b
• Conductor: 41.4
• Rank: \( 0 \)

Base field \(\Q(\zeta_{21})^+\)

Generator \(a\), with minimal polynomial \( x^{6} - x^{5} - 6 x^{4} + 6 x^{3} + 8 x^{2} - 8 x + 1 \); class number \(1\).

Elliptic curves in class 41.4-b over \(\Q(\zeta_{21})^+\)

Isogeny class 41.4-b contains 2 curves linked by isogenies of degree 3.

Curve label	Weierstrass Coefficients
41.4-b1	\( \bigl[a^{4} + a^{3} - 3 a^{2} - 2 a\) , \( a^{4} - 5 a^{2} + a + 3\) , \( a^{2} + a - 2\) , \( 3 a^{5} - 14 a^{3} + 15 a + 1\) , \( 5 a^{5} - 28 a^{3} + 2 a^{2} + 38 a - 5\bigr] \)
41.4-b2	\( \bigl[a^{5} - 5 a^{3} + 2 a^{2} + 6 a - 3\) , \( -a^{4} - a^{3} + 4 a^{2} + 2 a - 1\) , \( a + 1\) , \( 2 a^{5} - 10 a^{3} + 3 a^{2} + 10 a - 5\) , \( 2 a^{5} - 10 a^{3} + 3 a^{2} + 11 a - 7\bigr] \)

Rank

Rank: \( 0 \)

Isogeny matrix

\(\left(\begin{array}{rr} 1 & 3 \\ 3 & 1 \end{array}\right)\)

Isogeny graph