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Nielsen realization problem for derived automorphisms of generic K3 surfaces

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arxiv 2302.12663 v3 pith:W2WJPA3N submitted 2023-02-24 math.AG

classification math.AG
keywords surfacesderivedautomorphismsfinitegenericorderresultsshifts
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abstract

We prove that all nontrivial finite subgroups of derived automorphisms of K3 surfaces of Picard number one have order two and give formulas for the numbers of their conjugacy classes. We also obtain a similar result for the subgroups which are finite up to shifts. This in turn shows that such a K3 surface admits an associated cubic fourfold if and only if it has a derived automorphism of order three up to shifts. These results are achieved by proving that such a subgroup fixes a Bridgeland stability condition up to $\mathbb{C}$-actions. We also establish similar existence results for curves, twisted abelian surfaces, generic twisted K3 surfaces, and standard autoequivalences on surfaces.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Bridgeland-Enriques general K3 surfaces

    math.AG 2026-07 unverdicted novelty 6.0 of 10

    Introduces Bridgeland-Enriques general K3 surfaces whose degree-10 family detects categorical degeneration of special Gushel-Mukai threefolds and whose higher-degree families relate to Hodge-special Gushel-Mukai fourf...

  2. On two families of Enriques categories over K3 surfaces

    math.AG 2024-12 unverdicted novelty 6.0 of 10

    Studies moduli spaces for two families of Enriques categories over K3 surfaces from specific threefolds, recovering classical constructions modularly and providing a criterion for Enriques categories in the appendix.

  3. Derived-natural automorphisms on Hilbert schemes of points on generic K3 surfaces

    math.AG 2025-01 unverdicted novelty 4.0 of 10

    Characterizes involutions on Hilb^n(X) for generic K3 surface X induced by autoequivalences of D^b(X).

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