Exact computational full 2- and 3-torsion family at (p,q)=(-13,4); Velu quotient by rational order-3 subgroup. The mapped rank >=1 witness is non-torsion by the original exact 2-descent Kummer certificate and finite isogeny kernel. Conductor N=6630; local exponents {'2': 1, '3': 1, '5': 1, '13': 1, '17': 1}.
Natanael Wildner Fraga ·