Found in a rational-parameter search of the Kubert–Tate family for torsion ℤ/7ℤ: y^2 + (1-c)xy - by = x^3 - bx^2 with b=t^3-t^2, c=t^2-t, at t = 8/21; converted to the global minimal model. The 2 witness points were found with PARI/GP ellrank. Conductor 9096906, torsion ℤ/7ℤ.
Commentary
last edited by David Renshaw at · history
Log in to edit commentary.