Base field \(\Q(\zeta_{20})^+\)
Generator \(a\), with minimal polynomial \( x^{4} - 5 x^{2} + 5 \); class number \(1\).
Elliptic curves in class 79.1-b over \(\Q(\zeta_{20})^+\)
Isogeny class 79.1-b contains 2 curves linked by isogenies of degree 2.
Rank
Rank: \( 0 \)Isogeny matrix
\(\left(\begin{array}{rr} 1 & 2 \\ 2 & 1 \end{array}\right)\)