Using Bridgeland stability on normal surfaces, the authors prove Reider-type separation-of-jets bounds for ω_X⊗L^a, including positive characteristic and Du Bois variants, recovering optimal Fujita constants when C_X=0.
Contribution to birational geometry of algebraic varieties: open problems
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Reider-type theorems on normal surfaces via Bridgeland stability
Using Bridgeland stability on normal surfaces, the authors prove Reider-type separation-of-jets bounds for ω_X⊗L^a, including positive characteristic and Du Bois variants, recovering optimal Fujita constants when C_X=0.