The rationally 3-isogenous partner of a Mordell specialization constructed from the Burkhardt quartic with Bruin–Nasserden parameters (u,v,w)=(9/6,-12/6,-10/6) and t=-421/568.
PARI/GP 2.17.4 returned matching computational rank bounds [11,11] for both isogenous models.
jesper-petersen ·