Specialization of a rank-17 elliptic fibration on the K3 surface X1092 (lattice L_546). Selected by a full-box Mestre-Nagao sieve (primes <= 5000, |n|, d <= 10^5) with exact rescoring, then a 2-covering search seeded by the 17 generic sections. Under GRH+BSD the rank is exactly 30 (explicit-formula bound 31.93, global root number +1).
Specialization of a rank-17 elliptic fibration on the K3 surface X1092 (lattice L_546). Selected by a full-box Mestre-Nagao sieve (primes <= 5000, |n|, d <= 10^5) with exact rescoring, then a 2-covering search seeded by the 17 generic sections. Under GRH+BSD the rank is 30 or 31 (explicit-formula bound 31.93).
wgxli ·
Jason Ma ·