On local regularity estimates for fractional powers of parabolic operators with time-dependent measurable coefficients

M. Litsgård, K. Nyström

We consider fractional operators of the form $${\mathcal{H}}^s=({\partial }_t-{\mathrm{div}}_x(A(x,t){\nabla }_x){)}^s,(x,t)\in {\mathbb{R}}^n\times \mathbb{R},$$ where $s\in (0,1)$ and $A=…