Asymptotic Curvature Decay and Removal of Singularities of Bach-flat Metrics
نویسنده
چکیده
We prove a removal of singularities result for Bach-flat metrics in dimension 4 under the assumption of bounded L2-norm of curvature, bounded Sobolev constant and a volume growth bound. This result extends the removal of singularities result for special classes of Bach-flat metrics obtained by Tian and Viaclovsby. For the proof we emulate Cheeger and Tian and analyze the decay rates of solutions to the Bach-flat equation linearized around a flat metric. This classification is used to prove that Bach-flat cones are in fact ALE of order 2. This result is then used to prove the removal of singularities theorem.
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