3 papers
math.AG2026
Refined obstructions to local-global principles for 0-cycles
Francesca Balestrieri, Anouk Greven, Rachel Newton +3
We introduce new `refined' obstructions to local-global principles for 0-cycles on algebraic varieties over number fields. Assuming finiteness of relevant Tate--Shafarevich groups,…
math.NT2026
Quartic del Pezzo surfaces over without quadratic points
Giorgio Navone, Katerina Santicola, Harry C. Shaw +1
We construct an infinite family of quartic del Pezzo surfaces over with no quadratic points, for all primes . This answers a question of Colliot--Thélène…
math.NT2024
Curves with prescribed rational points
Katerina Santicola
Given a smooth curve with genus , we know by Faltings' Theorem that is finite. Here we ask the reverse question: given a finite set of ration…