On G-birational rigidity of del Pezzo surfaces

2023/01/17 by Egor Yasinsky
Mathematics · #math.AG

paper · pdf · doi:10.46298/epiga.2025.11640

Abstract

Let G be a finite group and H⊆ G be its subgroup. We prove that if a smooth del Pezzo surface over an algebraically closed field is H-birationally rigid then it is also G-birationally rigid, answering a geometric version of Kollár's question in dimension 2 by positive.

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