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math.AG2026
Finite automorphism groups of hypersurfaces via Bott vanishing
Dominic Bunnett, Caroline Namanya
We give a cohomological criterion for the automorphism group scheme of a hypersurface in a smooth Deligne-Mumford stack to be discrete in tame characteristics. The criterion conver…
math.AG2023
Group Actions from Algebraic Flops
Caroline Namanya
This paper constructs derived autoequivalences associated to an algebraic flopping contraction X --> X_con, where X is quasi-projective with only mild singularities. These functors…