paperAn Upbound of Hausdorff's Dimension of the Divergence Set of the fractional Schrödinger Operator on $H^s(\mathbb R^n)arXiv:1912.09688AbstractThis paper shows f∈Hs(Rn)supdimH{x∈Rn: t→0limeit(−Δ)αf(x)=f(x)}≤n+1−n2(n+1)s under {n≥2;α>21;2(n+1)n<s≤2n.