2022/10/18 by Pan, Yifei, Yan, Yu
#Analysis of PDEs (math.AP) #Complex Variables (math.CV) #FOS: Mathematics
paper · doi:10.48550/arxiv.2210.10099
We construct examples of twice differentiable functions in ℝn with continuous Laplacian and bounded Hessian. The same construction is also applicable to higher order differentiability, the Monge-Ampère equation, and mean curvature equation for hypersurfaces.