We study a nonlocal nonlinear parabolic problem with a fractional time derivative. We prove a Krylov-Safonov type result; mainly, we prove Hölder regularity of solutions. Our estimates remain uniform as the order of the fractional time derivative $\alpha \to 1$.
Mark Allen. "A nondivergence parabolic problem with a fractional time derivative." Differential Integral Equations 31 (3/4) 215 - 230, March/April 2018. https://doi.org/10.57262/die/1513652424