Recently, the Li-Yau-type gradient estimates for positive solutions to parabolic equations equation ₜ u=Δu+R₁u+R₂u^α+R₃u (u) ^β, equation under the general compact Finsler CD (-K, N) geometric flow are studied. Here R₁, R₂, R₃ C^1 (M, 0, T), α and β are both positive constants, T is the maximal existence time for the flow. However, compared with the Riemannian case, the curvature conditions impose stricter derivative bounds on the development term in the geometric flow, as well as on the derivative bounds of the distortion of the manifold. In this manuscript, we present Shi-type and Hamilton-type gradient estimates to demonstrate the possibility of removing such conditions.
Yu et al. (Tue,) studied this question.