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math.NT2024
Quartic del Pezzo surfaces without quadratic points
Brendan Creutz, Bianca Viray
Previous work of the authors showed that every quartic del Pezzo surface over a number field has index dividing (i.e., has a closed point of degree modulo ),, and asked…
math.NT2024
Galois invariants of finite abelian descent and Brauer sets
Brendan Creutz, Jesse Pajwani, Jose Felipe Voloch
For a variety over a global field, one can consider subsets of the set of adelic points of the variety cut out by finite abelian descent or Brauer-Manin obstructions. Given a Galoi…