Elliptic curve isogeny class 2268.1-i over number field \(\Q(\sqrt{21}) \)

• Base field: \(\Q(\sqrt{21}) \)
• Label: 2.2.21.1-2268.1-i
• Conductor: 2268.1
• Rank: \( 0 \)

Base field \(\Q(\sqrt{21}) \)

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

Elliptic curves in class 2268.1-i over \(\Q(\sqrt{21}) \)

Isogeny class 2268.1-i contains 3 curves linked by isogenies of degrees dividing 9.

Curve label	Weierstrass Coefficients
2268.1-i1	\( \bigl[a\) , \( -a + 1\) , \( a\) , \( 16 a - 73\) , \( 377 a - 1009\bigr] \)
2268.1-i2	\( \bigl[1\) , \( -1\) , \( a + 1\) , \( -14 a - 20\) , \( 48 a + 98\bigr] \)
2268.1-i3	\( \bigl[a\) , \( -1\) , \( 1\) , \( 177 a - 493\) , \( -1953 a + 5451\bigr] \)

Rank

Rank: \( 0 \)

Isogeny matrix

\(\left(\begin{array}{rrr} 1 & 3 & 9 \\ 3 & 1 & 3 \\ 9 & 3 & 1 \end{array}\right)\)

Isogeny graph